CTs Series Operation Manual
Page 3: 2-channel models
Page 31: Multi-channel models
CTs 4200
CTs 8200
CTs 600
CTs 1200
CTs 2000
CTs 3000
Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your local
Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.
This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible
situation which may arise during installation, operation or maintenance.
The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have
Trademark Notice: Com-Tech, BCA, Crown, Crown Audio, Amcron and Multi-Mode are registered trademarks of Crown International.
IQwic, PIP and PIP2 are trademarks of Crown International. Other trademarks are the property of their respective owners.
© 2008 by Crown Audio®, Inc. 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8000
137000-5A
5/08
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CTs Power Amplifiers
CTs 2-Channel Series
CTs 600
CTs 1200
CTs 2000
CTs 3000
Operation Manual
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Operation Manual
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CTs Power Amplifiers
Crown Audio, Inc.
DECLARATION of CONFORMITY
FOR COMPLIANCE QUESTIONS ONLY: Sue Whitfield
ISSUED BY: Crown Audio, Inc.
574-294-8289
1718 W. Mishawaka Road
swhitfi[email protected]
Elkhart, Indiana 46517 U.S.A.
European Representative’s Name and Address:
David Budge
10 Harvest Close
Yateley GU46 6YS
United Kingdom
Equipment Type: Commercial Audio Power Amplifiers
Family Name: CTs
Model Names: CTs 3000, CTs 2000, CTs 1200, CTs 600
EMC Standards:
EN 55103-1:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions
EN 55103-1:1997 Magnetic Field Emissions-Annex A @ 10 cm and 1 M
EN 61000-3-2:1995+A14:2000 Limits for Harmonic Current Emissions (equipment input current 16A per phase)
EN 61000-3-3:1995 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current 16A
EN 55022:2003 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class B
EN 55103-2:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity
EN 61000-4-2:2003 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge)
EN 61000-4-3:2003 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A)
EN 61000-4-4:2005 Electrical Fast Transient/Burst Immunity (Criteria B)
EN 61000-4-5:2001 Surge Immunity (Criteria B)
EN 61000-4-6:1996 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)
EN 61000-4-11:2004 Voltage Dips, Short Interruptions and Voltage Variation
Safety Standard:
EN 60065: 1998 Safety Requirements - Audio Video and Similar Electronic Apparatus
I certify that the product id entified above conforms to the requirements of the EMC Council Directive 89/336/EEC as amended by 92/31/EEC, and the Low Voltage Directive 73/23/EES as amended by 93/68/EEC.
Signed
Larry Coburn
Date of Issue: March 1, 2002
Title: Senior Vice President of Manufacturing
Operation Manual
page 5
Due to line current harmonics, we recommend that you contact your supply authority before connection.
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CTs Power Amplifiers
Table of Contents
5 Advanced Features and Options ............................ 18
Important Safety Instructions ...........................................................2
CTs 2-Channel Models.............................3
Declaration of Conformity ................................................................5
1 Welcome .......................................................8
1.1 Features ................................................................................8
2 How to Use This Manual ......................................9
3 Setup ............................................................10
3.1 Unpack Your Amplifier ..........................................................10
3.2 Install Your Amplifier .............................................................10
3.3 Ensure Proper Cooling ..........................................................10
3.4 Choose Input Wire and Connectors .......................................11
3.5 Choose Output Wire and Connectors ....................................11
3.6 Wire Your System ..................................................................12
3.6.1 Dual 8/4/2 Mode ...........................................................12
3.6.2 Bridge-Mono 16/8/4 Mode............................................12
3.6.3 Dual 70V/100V Mode ....................................................13
3.6.4 Bridge-Mono 140V/200V Mode ....................................13
3.6.5 Dual Mode with “Y” Input ..............................................14
3.7 Connect to AC Mains ............................................................15
3.8 Startup Procedure .................................................................15
4 Operation .......................................................15
4.1 Precautions ...........................................................................15
4.2 Front Panel Controls and Indicators ......................................16
4.3 Back Panel Controls and Connectors ....................................17
5.1 Protection Systems ..............................................................18
5.1.1 Thermal Level Control (TLC) ........................................18
5.1.2 Junction Temperature Simulation (JTS).........................18
5.1.3 Fault .............................................................................18
5.1.4 High-Pass Filters .........................................................18
5.1.5 Low-Pass Filters ..........................................................18
5.1.6 AC Under/Over Voltage Protection ...............................18
5.1.7 Circuit Breaker .............................................................18
5.1.8 DC Output Servo ..........................................................18
5.1.9 Inrush Limiting .............................................................18
5.1.10 Variable-speed Fans ...................................................18
5.2 Advanced Features ...............................................................18
5.2.1 Switching Power Supply ..............................................18
5.2.2 Input Compressor ........................................................18
5.2.3 Sleep Circuit.................................................................18
5.2.4 Input Sensitivity Switches ............................................19
5.3 Options ................................................................................19
5.3.1 Nominal Attenuation Settings .......................................20
6 Troubleshooting............................................... 21
7 Specifications ................................................. 23
8 AC Power Draw and Thermal Dissipation.................. 27
(Continued on next page)
page 6
Operation Manual
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CTs Power Amplifiers
Table of Contents
5.1.6 Power Fuse ............................................................... 42
5.1.7 Inrush Limiting .......................................................... 42
5.1.8 Variable-speed Fans .................................................. 42
5.2 Advanced Features ............................................................ 42
5.2.1Switching Power Supply ............................................ 42
5.2.2 Mode Switch ............................................................. 42
5.2.3 Bridge Mode Indicator ............................................... 42
5.2.4 Channel Level Control ............................................... 43
5.3 Options ............................................................................. 44
5.3.1 Control Modules ....................................................... 44
5.3.2 Input Sensitivity ........................................................ 44
6 Troubleshooting ............................................ 45
7 Specifications .............................................. 47
8 AC Power Draw and Thermal Dissipation ............... 51
CTs Multi-Channel Models......................31
Declaration of Conformity ............................................................ 32
1 Welcome ..................................................... 33
1.1 Features ............................................................................ 33
2 How to Use This Manual ................................... 33
3 Setup ......................................................... 34
3.1 Unpack Your Amplifier ...................................................... 34
3.2 Install Your Amplifier ......................................................... 34
3.3 Ensure Proper Cooling ...................................................... 34
3.4 Choose Input Wire and Connectors ................................... 35
3.5 Choose Output Wire and Connectors ................................ 35
3.6 Wire Your System .............................................................. 36
3.6.1 Dual 8/4 Mode .......................................................... 36
3.6.2 Dual 70V Mode ......................................................... 36
3.6.3 Bridge-Mono 16/8 Mode .......................................... 37
3.6.4 Bridge-Mono 100V Mode ......................................... 37
3.7 Connect to AC Mains ........................................................ 38
3.8 Startup Procedure ............................................................. 38
4 Operation .................................................... 39
4.1 Precautions ....................................................................... 39
4.2 Front Panel Controls and Indicators .................................. 40
4.3 Back Panel Controls and Connectors ................................ 41
5 Advanced Features and Options.......................... 42
5.1 Protection Systems ........................................................... 42
5.1.1 Thermal Level Control (TLC) ..................................... 42
5.1.2 Fault .......................................................................... 42
5.1.3 Fault Isolation Topology (FIT) .................................... 42
5.1.4 35-Hz High-Pass Filter .............................................. 42
5.1.5 AC Under-/Over-Voltage Protection ........................... 42
CTs 2-Channel and Multi-Channel Models
9 Service ....................................................... 53
9.1. International and Canada Service ..................................... 53
9.2 US Service ........................................................................ 53
9.2.1 Service at a US Service Center ................................... 53
9.2.2 Factory Service ......................................................... 53
9.2.3 Factory Service Shipping Instructions........................ 53
9.2.4 Packing Instructions .................................................. 53
9.2.5 Estimate Approval...................................................... 53
9.2.6 Payment of Non-Warranty Repairs.............................. 53
10 Warranty ................................................... 54
Factory Service Information Form ................................................ 57
Product Registration Form............................................................ 59
Operation Manual
page 7
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CTs Power Amplifiers
1 Welcome
®
Building on the foundation of the Com-Tech
Series, the Crown CTs Series offers new
•
•
Direct constant-voltage
(70V/140V) or low-impedance (2/4/8 ohm)
operation. No switch required.
®
flexibility and value for installed sound. The
Com-Tech Series was the first to offer
independent selection of high- and low-
impedance operation for a specific channel, and
CTs Series amplifiers continue that tradition,
with power levels and features carefully chosen
to perfectly integrate into fixed install design
requirements.
Input sensitivity is independently
selectable for each channel. Choose low-
impedance (4/8 ohm), constant-voltage
(70V/100V/140V/200V), or 26 dB.
•
•
TLC protection circuitry protects the
amplifier from long-term excessive heat by
subtly and dynamically reducing the gain
only when necessary.
Modern power amplifiers are sophisticated
pieces of engineering capable of producing
extremely high power levels. They must be
treated with respect and correctly installed if
they are to provide the many years of reliable
service for which they were designed.
JTS circuitry (CTs 600/1200 only) quickly
protects BJT output transistors from unsafe
operating conditions without shutting the
channel down. (Not applicable to BCA
amplifiers as they are inherently protected.)
In addition, CTs Series amplifiers include a
number of features which require some
explanation before they can be used to their
maximum advantage.
•
•
PIP2™ (Programmable Input Processor)
connector accepts accessory modules that
tailor the amplifier to suit specific
applications.
Please take the time to study this manual so that
you can obtain the best possible service from
your amplifier.
Removable terminal block input
connectors, with “Y” Input Switch in the
standard PIP2-BBY module.
1.1 Features
•
Switching Power Supply for reduced
weight.
(Continued on next page)
•
High power-density, with all two-channel
models in a 2U chassis.
page 8
Operation Manual
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CTs Power Amplifiers
1 Welcome
Features (continued from page 8)
•
•
Legendary Crown class I (BCA®) and class
AB+B (Multi-Mode ®) output topologies
offer the best in amplifier reliability. CTs
600/1200 use Class AB+B; CTs 2000/3000
use Class I.
2 How to Use This
Manual
This manual provides you with the necessary
information to safely and correctly setup and
operate your amplifier. It does not cover every
aspect of installation, setup or operation that
might occur under every condition. For
additional information, please consult Crown’s
Amplifier Application Guide (available online at
your system installer or retailer.
•
Switchable high-pass filter for each channel
provides low-frequency roll off to eliminate
step down transformer saturation when used
in distributed systems.
Class I is the lowest distortion, lowest
noise, and highest performing topology
available among switch-mode amplifiers.
•
Comprehensive array of indicators including
Power, Data, and Bridge; along with Ready,
Signal, Clip, Thermal and Fault for each
channel, provide accurate diagnostics.
•
•
Continuously-variable fans optimize
cooling efficiency.
•
•
Blue Power Indicator flashes if the amplifier
shuts off due to an under/over-voltage
condition on the AC mains.
Three Year, No-Fault, Fully-Transferable
Warranty completely protects your
investment and guarantees its specifica-
tions.
We strongly recommend you read all
instructions, warnings and cautions contained
in this manual. Also, for your protection, please
send in your warranty registration card today.
And save your bill of sale—it’s your official
proof of purchase.
Advanced protection circuitry guards against:
shorted outputs, DC, mismatched loads,
general overheating, under-/over-voltage,
high-frequency overloads and internal faults.
Operation Manual
page 9
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CTs Power Amplifiers
3 Setup
3.1 UnpackYour Amplifier
3.2 InstallYour Amplifier
3.3 Ensure Proper Cooling
Please unpack and inspect your amplifier for
any damage that may have occurred during
transit. If damage is found, notify the
transportation company immediately. Only you
can initiate a claim for shipping damage. Crown
will be happy to help as needed. Save the
shipping carton as evidence of damage for the
shipper’s inspection.
CAUTION: Before you begin, make sure
your amplifier is disconnected from the
power source, with power switch in the
“off” position and all level controls
turned completely down (counterclock-
wise).
When using an equipment rack, mount units
directly on top of each other. Close any open
spaces in rack with blank panels. DO NOT block
front or rear air vents. The side walls of the rack
should be a minimum of two inches (5.1 cm)
away from the amplifier sides, and the back of
the rack should be a minimum of four inches
(10.2 cm) from the amplifier back panel.
Use a standard 19-inch (48.3 cm) equipment
rack. See Figure 3.1 for amplifier dimensions.
We also recommend that you save all packing
materials so you will have them if you ever need
to transport the unit. Never ship the unit
without the factory pack.
Figure 3.2 illustrates standard amplifier airflow.
You may also stack amps without using a
cabinet.
NOTE: When transporting, amplifiers should be
supported at both front and back.
YOU WILL NEED (not supplied):
•
•
•
Input wiring cables
Output wiring cables
Phillips screwdriver
Rack for mounting amplifier (or a stable surface
for stacking)
WARNING: Before you start to set up
your amplifier, make sure you read and
observe the Important Safety Instruc-
tions found at the beginning of this
manual.
Figure 3.2 Airflow
Figure 3.1 CTs 2-Channel Series Dimensions
page 10
Operation Manual
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CTs Power Amplifiers
3 Setup
3.4 Choose InputWire
and Connectors
Figure 3.3 shows connector pin assignments for
balanced wiring, and Figure 3.4 shows connector
pin assignments for unbalanced wiring.
Figure 3.3
Balanced Input
Connector Wiring
NOTE: Custom wiring should only be
performed by qualified personnel.
3.5 Choose OutputWire and
Connectors
A protective cover is installed over the barrier-
strip output. Some models have a cover with two
holes. To remove this type of cover:
Figure 3.4
Unbalanced Input
Connector Wiring
1. Loosen screws inside top and bottom holes of
cover (see Figure 3.6).
2. Slide cover to left or right, then pull it off away
from the amplifier.
3. Tighten screws.
Crown recommends using professionally
constructed, high-quality, two- or four-conductor,
heavy gauge speaker wire and connectors. You
may use terminal forks up to 10 AWG or bare wire
for your output connectors (see Figure 3.5). To
prevent the possibility of short-circuits, wrap or
otherwise insulate exposed loudspeaker cable
connectors. For best results, Crown recommends
Panduit part #PV10-10LF-L or equivalent
terminal fork. Screw spacing is shown in Figure
3.5.
Using the guidelines below, select the appropriate
size of wire based on the distance from amplifier
to speaker (low-impedance loads only).
Distance
Wire Size
up to 25 ft. (7.6m)
26-40 ft. (7.9-12.2m)
16 AWG
14 AWG
41-60 ft. (12.5-18.3m) 12 AWG
> 60 ft (18.3m) 10 AWG
CAUTION: Never use shielded cable for
output wiring.
Figure 3.6 How to Remove the Two-Holed
Barrier-Block Cover
Replace output cover after output wiring is
complete.
Figure 3.5 Typical Output Connector Wiring
Operation Manual
page 11
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CTs Power Amplifiers
3 Setup
3.6 WireYour System
3.6.1 Dual 8/4/2 Mode
Typical input and output wiring, along with Attenuator
and Mode Switch settings are shown in Figures 3.6 and
3.7. Make sure the Mode switch is set to the “Dual”
position when operating in Dual mode.
INPUTS: Connect input wiring for each channel. The Y
switch on the rear PIP panel can be used to parallel the
channel inputs when only mono input signals are
necessary. The amplifier’s channel outputs are still
independent.
OUTPUTS: Maintain proper polarity (+/–) on
output connectors.
Figure 3.8 Attenuator and Mode-
Switch Settings for Dual Mode
Connect the Channel 1 speaker’s positive (+) lead to
amplifier Channel 1 positive terminal; repeat for negative
(–). Repeat Channel-2 wiring as for Channel 1. Refer to
Section 3.5 for output connector pin assignments.
Always route the input and output
wires in separate bundles.
Figure 3.7 System Wiring, Dual Mode.
3.6.2 Bridge-Mono 16/8/4 Mode
Typical input and output wiring, along with Attenuator
and Mode Switch settings, are shown in Figures 3.8 and
3.9. Make sure the Mode switch is set to the “Mono”
position when operating in Bridge-Mono mode.
INPUTS: Connect input wiring to Channel 1 only.
OUTPUTS: Connect the speaker across the positive
terminals of each channel pair. Do not use the negative
terminals of the channel pair when the pair is being
operated in Bridge-Mono mode. Refer to Section 3.5 for
output connector pin assignments.
NOTE: Crown provides a reference of wiring pin
assignments for commonly used connector types in the
Crown Amplifier Application Guide available at
NOTE: When operating in Bridge-Mono mode,
turn down (full CCW) the Input Attenuator for
Channel 2. The Channel-1 Input Atttenuator
works both channels.
Figure 3.10 Attenuator and Mode-
Switch Settings for Bridge-Mono Mode
See the next page for constant-voltage operation.
Figure 3.9 System Wiring, Bridge-Mono Mode
page 12
Operation Manual
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CTs Power Amplifiers
3 Setup
3.6.3 Dual 70V/100V Mode
Typical input and output wiring, along with
Attenuator and Mode Switch settings are shown in
Figures 3.10 and 3.11. Make sure the Mode
switch is set to the “Dual” position when operating
in Dual mode.
INPUTS: Connect input wiring to both channels.
OUTPUTS: In Dual Mode, the CTs 600/1200 can
power 25/50/70V lines; the CTs 2000/3000 can
power 25/50/70/100V lines. Connect each
channel of output connectors to speakers that
have the appropriate transformers.
.
Figure 3.12 Attenuator and Mode-Switch
Settings for 70V/100V Operation
Always route the input and output wires in
separate bundles.
Figure 3.11 System Wiring andY-Switch Setting for 70V/100V Operation
3.6.4 Bridge-Mono 140V/200V Mode
Typical input and output wiring, along with
Attenuator and Mode Switch settings are shown in
Figures 3.12 and 3.13. Make sure the Mode
switch is set to the “Mono” position when
operating in Bridge-Mono mode.
INPUTS: Connect input wiring to Channel 1 only.
OUTPUTS: In Bridge-Mono mode, the CTs
600/1200 can power 140V lines; the CTs
2000/3000 can power 140V and 200V lines.
Connect speakers with 140V or 200V
transformers across the positive terminals of the
channel pair. Do not use the negative terminals of
the channel pair when the pair is being operated in
Bridge-Mono mode. Refer to Section 3.5 for
output connector pin assignments.
Figure 3.14 Attenuator and Mode-Switch
Settings for 140V/200V Operation
NOTE: When operating in Bridge-Mono
mode, turn down (full CCW) the Input
Attenuator for Channel 2. The Channel-1
Input Attenuator works both channels.
Figure 3.13 System Wiring andY-Switch Setting for 140V/200V Operation
Operation Manual
page 13
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CTs Power Amplifiers
3 Setup
3.6.5 Dual Mode with“Y”Input
See Figure 3.14. This configuration feeds a mono
signal to both Channel 1 and Channel 2. In the
example in Figure 3.14, Channel 1 is driving a low-
impedance loudspeaker and Channel 2 is driving a
loudspeaker with a 70V transformer.
INPUTS:
Connect the signal to the Channel 1 input. On the
back panel, set the “Y” Input Switch to ON.
OUTPUTS:
Connect the Channel 1 speaker’s positive (+) lead to
Channel 1 positive terminal of amp; repeat for
negative (–).
Connect the Channel 2 speaker’s positive (+) lead to
Channel 2 positive terminal of amp; repeat for
negative (–).
See Figure 3.15. Turn up both Input Attenuators and
set the Mode Switch to Dual.
NOTE: When the “Y” Input Switch is on, the Channel
2 input can be used to daisy-chain to another
amplifier.
Figure 3.15 System Wiring for “Y” Input Mode
Always route the input and output wires in
separate bundles.
Figure 3.16
Attenuator and Mode-Switch
Settings for “Y” Input Mode
page 14
Operation Manual
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CTs Power Amplifiers
3 Setup
3.7 Connect to AC Mains
4 Operation
4.1 Precautions
Your amplifier is protected from internal and external
faults, but you should still take the following precautions
for optimum performance and safety:
On the back panel, check whether your amplifier is labeled
for 120V or 220-240V AC mains. Connect your amplifier to
the corresponding AC mains power source (power outlet)
with the supplied AC power cordset. First, connect the IEC
end of the cordset to the IEC connector on the amplifier.
Then, with the amplifier in the OFF position, plug the other
end of the cordset into the AC mains.
1. Before use, your amplifier first must be configured for
proper operation, including input and output wiring
hookup. Improper wiring can result in serious
operating difficulties. For information on wiring and
configuration, please consult the Setup section of this
manual or, for advanced setup techniques, consult
Crown’s Amplifier Application Guide available online
WARNING: The third prong of this connector
(ground) is an important safety feature. Do not
attempt to disable this ground connection by
using an adapter or other methods.
Amplifiers don’t create energy. The AC mains voltage and
current must be sufficient to deliver the power you expect.
Check the amplifier’s back-panel label which specifies the
required AC mains voltage and frequency. The AC mains
voltage must be no more than 15% above the required
voltage, and no less than 25% below the required voltage.
The AC mains frequency must be within the required
frequency range. If you are unsure of the output voltage of
your AC mains, please consult your electrician.
2. Use care when making connections, selecting signal
sources and controlling the output level. The load you
save may be your own!
3. Do not short the ground lead of an output cable to the
input signal ground. This may form a ground loop and
cause oscillations.
4. Never connect the output to a power supply,
battery or power main. Electrical shock may
result.
3.8 Startup Procedure
Use the following procedure when first turning on your
amplifier:
5. Tampering with the circuitry, or making unauthorized
circuit changes may be hazardous and invalidates all
agency listings.
1. Turn down the level of your audio source.
2. Turn down the level controls of the amplifier.
3. Turn on the “Power” switch. The Power indicator
should glow. Wait for the “Ready” LED to illuminate.
6. Do not operate the amplifier with the red Clip LEDs
constantly flashing.
4. Turn up the level of your audio source to an optimum
level.
7. Do not overdrive the mixer, which will cause clipped
signal to be sent to the amplifier. Such signals will be
reproduced with extreme accuracy, and loudspeaker
damage may result.
5. Turn up the Level controls on the amplifier until the
desired loudness or power level is achieved. Verify
that the Signal LED is flashing.
8. Do not operate the amplifier with less than the rated
load impedance. Due to the amplifier’s output
protection, such a configuration may result in
premature clipping and speaker damage.
6. Turn down the level of your audio source to its normal
range.
If you ever need to make any wiring or installation changes,
don’t forget to turn off the amplifier and disconnect the
power cord.
Remember: Crown is not liable for damage that results
from overdriving other system components.
For help with determining your system’s optimum gain
structure (signal levels) please refer to the Crown Amplifier
Application Guide, available online at
Operation Manual
page 15
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CTs Power Amplifiers
4 Operation
I. Power Indicator
4.2 Front Panel Controls
and Indicators
Signal Indicators
Blue LED indicates AC power has been
applied and is within the safe operating
range of the power supply. The LED will
flash when the AC line voltage is
approximately 15% above or 25% below
the nominal rated value.
Three green LEDS per channel indicate the
amplifier’s input and output signal levels.
From bottom to top the LEDs are:
A. Fault Indicator
Red LED, one per channel, flashes when
the amplifier output channel has stopped
operating. Usually this means that the
amplifier must be serviced.
D. Signal: input signal is above –40 dBu.
E. –20 dB: amplifier output is within 20 dB of
clipping.
J. Data Indicator
Yellow LED indicates control activity This
LED is driven by the IQ-PIP2 module via
the PIP2interface. Note: Data indicator
flashes only when the installed PIP module
is polled for data, or is polled to see
whether it is online.
F. –10 dB: amplifier output is within 10 dB of
B. Thermal Indicator
clipping.
Red LED, one per channel, illuminates
when the channel has shut down, or is very
near shutting down, due to thermal stress
or overload.
G. Clip Indicator
Red LED, one per channel, illuminates
when the channel’s output signal reaches
the onset of audible clipping. The Clip
Indicator also will illuminate during
Thermal Level Control (TLC) limiting or
when the input compressor/limiter is
protecting the amplifier from input
overload.
C. Ready Indicator
K. Bridge Mode Indicator
Yellow LED illuminates when the rear-
panel Mode Switch is set to the “Bridge”
position
Green LED, one per channel, illuminates
when the channel is initialized and ready to
produce audio output. Indicator is off when
the channel is set to standby mode via the
System Architect or IQ Control Software
packages.
L. Power Switch
Push-on / push-off switch.
H. Cooling Vents
Front-to-rear forced airflow.
Figure 4.1 CTs 600 front panel.
page 16
Operation Manual
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CTs Power Amplifiers
4 Operation
be used to daisy-chain the signal to
another amplifier. See Section 3.6.5 for
details.
4.3 Back Panel Controls
and Connectors.
Sensitivity Switches
Behind the input panel are the Input
Sensitivity Switches. One 3-position
switch per channel selects various
sensitivity settings. See Section 5.2.4 for
details and diagram.
CTs 2000/3000 back panel is shown.
CTs 600/1200 look slightly different near
the Reset button.
S. Input Connectors
Balanced 3-pin terminal block connectors,
one per channel.
M. Power Cord Connector
Q. Mode Switch
Standard 15 amp IEC inlet. A circuit breaker
located near the IEC power inlet protects the
amplifier from excessive AC current draw.
T. Channel Level Controls
One 21-position detented rotary attenuator
per channel, ranging from –100 dB to 0 dB
gain.
This two-position switch is used to select
the amplifier’s mode of operation: Dual or
Bridge Mono.
N. Reset Switch
Dual mode is used for 2/4/8 ohms, for 70V
operation with the CTs 600/1200, and for
70/100V operation with the CTs
2000/3000.
Resets the circuit breaker that protects the
power supply.
U. High-Pass Filter
One 3-position switch per channel selects
between OFF, 35Hz and 70Hz 3rd-order
filters.
O. Ventilation Grille
Air flow is front to back. Do not block the
ventilation grilles.
Bridge mode is used for 4/8/16 ohms, for
140V operation with the CTs 600/1200,
and for 100/140/200V operation with the
CTs 2000/3000.
V. Speaker Connectors
One four-pole touch-proof terminal strip.
Accepts up to 10 AWG terminal forks.
P. PIP ™ Input Panel
PIP2-BBY module includes two balanced
3-pin removable barrier connectors. The
“Y” Input Switch is described under
letter R.
Output Cover (not shown)
R. “Y” Input Switch
This covers the output connectors,
protecting users from the connectors’
potentially high voltage. This cover is
required for Class 2 wiring installations.
See Section 3.5 for details on removing
covers that have two holes.
When set to ON, this switch parallels the
input signals of the two channels, for use
when the input signal is mono. The
amplifier’s channel outputs are still
independent. The “Y” Input Switch also can
Figure 4.2 CTs 2000 and 3000 Back Panel Controls and Connectors
Operation Manual
page 17
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CTs Power Amplifiers
5 Advanced Features
and Options
NOTE: For detailed information about
these Crown amplifier features, please
consult the Crown Amplifier Application
Guide, available on the Crown website
5.1.9 Inrush Limiting
5.1.3 Fault
A soft-start circuit in the power supply
minimizes the amplifier’s current draw during
power-on.
The amplifier will light the Fault LED if the
amplifier output stage stops operating. If this
happens, see Section 8 for servicing
information.
5.1.10Variable-speed Fans
5.1 Protection Systems
5.1.4 High-Pass Filters
Two continuously variable speed fans direct the
airflow through the amplifier for cooling.
Your Crown amplifier provides extensive
protection and diagnostic capabilities,
including thermal level control, fault indicators,
high-pass filtering, DC protect, AC under/over
voltage protection, inrush limiting, and
variable-speed fans.
Very low frequency signals contain no useful
musical energy, waste valuable amplifier power
and headroom, and can be damaging to your
speakers. Your Crown amplifier provides high-
pass filters to remove these signals from each
channel’s output.
5.2 Advanced Features
5.2.1 Switching Power Supply
Crown’s Switching Power Supply minimizes the
amplifier’s weight.
On the back panel are two 3-position 3rd-order
high-pass filter switches (one per channel) with
selections of Off, 35Hz and 70 Hz.
5.1.1Thermal Level Control (TLC)
Typical non-switching power supplies require
large, heavy transformers in order to produce
the required power at the output stage. These
transformers must be large to operate at 50 to
60 Hz (standard AC supplied by the power
company).
If the amplifier becomes too hot for safe
operation, the light will shine brightly and TLC
will engage the input compressor. By
compressing the input, the amplifier will not
generate as much heat and will have a chance to
cool down. The degree of compression is
proportional to the amount of overheating. This
feature allows the show to go on, rather than
having the amplifier shut down.
5.1.5 Low-Pass Filters
Gaussian-approximation ultrasonic filters
prevent ultrasonic feedback and HF burnout in
drivers. This type of filter preserves transient
response better than a Butterworth filter.
By contrast, switching power supplies can
operate with a much smaller (and lighter)
transformer because they first convert the AC up
to a much higher frequency, thereby reducing
waste.
5.1.6 AC Under/OverVoltage
Protection
5.1.2 JunctionTemperature
Simulation (JTS) (CTs 600/1200
only)
If the AC line voltage drops below 25% or rises
above 15% of the nominal operating voltage of
the amplifier, the amplifier’s power supply turns
off and the blue Power LED flashes. The
amplifier will turn back on when the AC line
voltage returns to safe operating levels (within
+15% / -25%).
The power supply is voltage-specific, allowing
use in regions using 120V or 240V.
JTS circuitry simulates the operation of the
amplifier’s output transistors, and compares it
against the transistors known Safe Operation
Area (SOA). If JTS sees that more power is
about to be asked of the output devices than
they are capable of delivering under the present
conditions, JTS immediately limits the drive
level until it falls within the SOA. Limiting is
proportional and kept to an absolute minimum-
only what is required to prevent the possibility
of output transistor damage.
5.2.2 Input Compressor
Prevent input/output overload.
5.2.3 Sleep Circuit
5.1.7 Circuit Breaker
Lowers standby power consumption by shutting
down the high-voltage supplies during idle
periods.
A circuit breaker located near the IEC power
inlet protects the amplifier from excessive AC
current draw.
NOTE: By default, the sleep circuit is not active
on the CTs 600/1200, but may be activated as a
service option.
5.1.8 DC Output Servo
This level of protection enables Crown to
increase output transistor utilization while also
greatly increasing amplifier reliability.
The output servo circuit protects your drivers by
eliminating DC offset, even in the presence of
very large asymmetrical signals.
page 18
Operation Manual
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CTs Power Amplifiers
5 Advanced Features
and Options
5.3 Options
5.2.4 Input Sensitivity Switches
T-170V: See Figure 5.3. This is an autoformer that
allows 100V output from the CTs 600/1200, and allows
other amplifiers without direct constant voltage output
to be easily integrated into distributed systems.
See Figures 5.1 and 5.2. To access the Input Sensitivity Switches, turn off the
amplifier and remove the PIP2-BBY Input Panel. The switches are in the top surface
of the cavity behind the Input Panel. One 3-position switch per channel selects
among these settings: CTs 600/1200: 1.4V (8/4 ohms), 26 dB gain, and 1.4V (70V
operation). CTs 2000/3000: 1.4V (8/4 ohms), 26 dB gain, and 1.4V (70V) / 2V
(100V). The Specifications chapter lists the input sensitivity for the 26 dB gain
setting.
TP-170V: See Figure 5.4. This is a rack-mountable
panel with four autoformers as described above.
Figure 5.3 T-170V
PIP Modules
Versatile PIP (Programmable Input Processor)
modules provide flexible expansion features that can
be added to customize the amplifier. PIP modules plug
into the connector inside the back panel of the
amplifier. PIP modules are available with features
ranging from error-driven compressor/limiters to
crossovers to remote control and monitoring via
IQwic™ or System Architect software. Your amplifier is
a PIP2 amplifier, which means it can take advantage of
the many advanced features found in PIP2 modules.
The CTs Series 2-channel models do not accept earlier
PIPmodules.
contact Crown Customer Service, for descriptions of
available PIP and PIP2 modules.
Figure 5.1 Input Sensitivity Switches for CTs 600/1200
Figure 5.4 TP-170V (back view)
Figure 5.2 Input Sensitivity Switches for CTs 2000/3000
Operation Manual
page 19
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CTs Power Amplifiers
5 Advanced Features
and Options
5.3.1 Nominal Attenuation Settings
The signal level for each input can be attenuated repeatably by
adjusting the 21-step Level Control (see Section 4.3). Figure 5.5
shows the attenuation in dB for each detent. The setting of the
input-sensitivity switch varies the actual attenation as shown.
Attenuation in dB
Detent
26 dB
Tolerance (dB)
4/8 ohm or 70/100V
0 (full CCW)
OFF
48.0
36.0
24.0
21.0
18.0
15.0
13.5
12.0
10.5
9.0
—
6
OFF
54.0
42.0
30.0
26.0
24.0
22.0
20.0
18.0
16.0
14.5
13.0
11.0
9.5
1
2
6
3
3
4
3
5
3
6
3
7
3
8
1.5
1.5
1.5
1.5
1.5
1
9
10
11
8.0
12
7.0
13
6.0
14
5.0
1
8.0
15
4.0
1
6.5
16
3.0
1
5.0
17
18
2.0
1
3.5
1.0
1
1.5
19
0.5
+1 –5
—
0.5
20 (full CW)
0.0
0.0
Figure 5.1 Level-control Attenuation per Detent for CTs 2-Channel Amplifiers
page 20
Operation Manual
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CTs Power Amplifiers
6 Troubleshooting
CONDITION: Power indicator is off.
CONDITION: Fault indicator is
flashing.
POSSIBLE REASON
•
•
•
The amplifier has lost AC power.
The amplifier’s Power switch is off.
POSSIBLE REASON:
•
The amplifier channel has stopped
operating. Refer the unit to an authorized
Crown Service Center.
The amplifier is not plugged into the power
receptacle.
•
The amplifier output level is so high that
the power supply circuit breaker has
tripped. Allow the unit to cool. Turn down
the Level controls. Press the Reset Switch
on the back panel.
CONDITION: Distorted sound.
POSSIBLE REASON:
•
Load is wired incorrectly or Stereo/Mono
mode switch is set incorrectly. Check both.
•
Input is overlaoded by a signal level that is
too high. Turn down your amplifier level
controls, or turn down the input signal, until
the clip light goes out.
CONDITION: Power indicator is
flashing.
POSSIBLE REASON:
Note: If the signal sounds distorted even though
the Clip LED is off, the input signal may be
distorted before it reaches the amplifier input.
Check gain staging and output levels of the mixer
or preamp.
•
The AC line voltage has dropped below
20% or has risen above 10% of the
nominal line voltage of the power supply.
CONDITION:Thermal indicator is
on.
POSSIBLE REASON:
•
The amplifier is becoming too hot for safe
operation. Allow amplifier to cool. Check
for loads less than 2 ohms, and for
excessive input levels. Check for proper
ventilation and proper mode-switch
setting.
“Off/Flashing/On” above means that
the LED can be off, or flashing, or on.
Operation Manual
page 21
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CTs Power Amplifiers
6 Troubleshooting
CONDITION: Data indicator not
flashing, even though PIP module is
installed and host computer control
software is active.
CONDITION: No sound, even though
the amp has power. Power LED is on
without flashing and the amp is receiving an input
signal. Signal indicator is flashing.
POSSIBLE REASON:
•
Cable between computer and PIP module is
broken or not connected.
POSSIBLE REASON:
•
•
Speakers not connected.
Note: Data indicator flashes only when the installed
PIP2 module is polled for data, or is polled to see
whether it is online.
Open circuit due to speaker failure.
•
There is a short on the amplifier output. First
disconnect your speakers from the affected
channel(s) one by one to determine if one of
the loads is shorted.
CONDITION: Bridge LED is lit.
POSSIBLE REASON:
•
Amplifier is in bridge-mono mode.
Ready LED is off. Channel has been set to
standby mode via the control system.
CONDITION: No input signal. Signal
indicator is not flashing even though audio is
applied, and the channel is ready..
“Off/Flashing/On” above means that
the LED can be off, or flashing, or on.
POSSIBLE REASON:
•
•
Input signal level is very low.
Level controls are turned down.
page 22
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CTs Power Amplifiers
7 Specifications
Minimum Guaranteed Power
CTs 600
CTs 1200
CTs 2000
CTs 3000
(20 Hz - 20 kHz)
Power at 0.1% THD
Power at 0.1% THD
Power at 0.35% THD
Power at 0.35% THD
2-ohm Dual (per ch.)
150W
300W
250W
600W
1000W
1000W
1500W
1500W
4-ohm Dual (per ch.)
8-ohm Dual (per ch.)
300W
600W
1000W
1250W
16-ohm Dual (per ch.)
300W
300W
625W
625W
70V Dual (per ch.)
300W
600W
1000W
1500W
100V Dual (per ch.)
300W*
300W
600W*
500W
1000W
1500W
4-ohm Bridge
2000W
3000W
8-ohm Bridge
600W
1200W
1200W
1200W*
1200W
1200W*
CTs 1200
0.25 dB
< 105 dB
< 0.1%
< 0.1%
2000W
3000W
16-ohm Bridge
600W
2000W
2500W
100V Bridge
600W*
600W
2000W
3000W
140V Bridge
2000W
3000W
200V Bridge
600W*
CTs 600
0.25 dB
< 105 dB
< 0.1%
< 0.1%
2000W
3000W
Performance
CTs 2000
0.25 dB
< 105 dB
< 0.35%
< 0.35%
CTs 3000
0.25 dB
< 105 dB
< 0.35%
< 0.35%
Frequency Response (at 1 watt, 20 Hz - 20 kHz)
Signal to Noise Ratio (ref. rated power, 20 Hz to 20 kHz, A-weighted)
Total Harmonic Distortion (THD) at full rated power, from 20 Hz to 20 kHz
Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1, from –40 dB to
full rated power
Damping Factor:
10 Hz to 100 Hz
> 3000
> 3000
> 3000
> 3000
Crosstalk (below rated power)
20 Hz to 1kHz
> 80 dB
50 dB
> 80 dB
50 dB
> 80 dB
50 dB
> 80 dB
50 dB
Common Mode Rejection (CMR) (20 Hz to 1 kHz, typical)
DC Output Offset
< 2 mV
< 2mV
< 2 mV
< 2 mV
Input Impedance nominally balanced, nominally unbalanced
10 k ohms, 5 k ohms
10 k ohms, 5 k ohms
10 k ohms, 5 k ohms
10 k ohms, 5 k ohms
* With T-170V or TP-170V.
Operation Manual
page 23
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CTs Power Amplifiers
7 Specifications
Performance
CTs 600
CTs 1200
CTs 2000
CTs 3000
Maximum Input Level
Before input compression
Absolute maximum
+20 dBu
+ 32 dBu
+20 dBu
+ 32 dBu
+20 dBu
+ 32 dBu
+20 dBu
+ 32 dBu
Load Impedance (Note: Safe with all types of loads)
Stereo
2, 4, 8, 16 ohms, 70V, and 100V*
4, 8, 16, 100V*, 140V and 200V*
2, 4, 8, 16 ohms, 70V, and 100V*
4, 8, 16, 100V*, 140V and 200V*
2, 4, 8, 16, 70V,
and 100V
2, 4, 8, 16, 70V,
and 100V
Bridge Mono
4, 8, 16, 140V , 200V
4, 8, 16, 140V, 200V
Voltage Gain (at maximum level setting)
8/4 Ohm Operation
26 dB
70V Operation
100V Operation
35:1 (31 dB)
20:1 (26 dB)
50:1 (34 dB)
50:1 (34 dB)
20:1 (26 dB)
50:1 (34 dB)
63.9:1 (36 dB)
20:1 (26 dB)
50:1 (34 dB)
50:1 (34 dB)
71.4:1 (37 dB)
20:1 (26 dB)
50:1 (34 dB)
50:1 (34 dB)
Input Sensitivity
2/4/8 ohms
70V
1.4V
1.4V
1.4V
1.4V
1.4V
1.4V
2.0V
1.4V
1.4V
2.0V
100 V
26 dB gain
4 ohm load: 1.74V.
8 ohm load: 2.46V
4 ohm load: 2.46V.
8 ohm load: 3.47V
4 ohm load: 3.17V.
8 ohm load: 4.48V
4 ohm load: 3.88V.
8 ohm load: 5.01V
Required AC Mains (+15%, – 25%)
Power Draw at Idle (120 VAC mains)
Overall Group Delay
120V/60 Hz, 230V/50 Hz
24W (Standby Mode)
< 120 usec
120V/60 Hz, 230V/50 Hz
24W (Standby Mode)
< 120 usec
120V/60 Hz, 230V/50 Hz
35W (Standby Mode)
< 120 usec
120V/60 Hz, 230V/50 Hz
35W (Standby Mode)
< 120 usec
Cooling
Continuously variable speed
forced air, front-to-back airflow
Continuously variable speed
forced air, front-to-back airflow
Continuously variable speed
forced air, front-to-back airflow
Continuously variable speed
forced air, front-to-back airflow
Dimensions
Width
Height
19 in. (48.3 cm.)
3.5 in. (8.9 cm.)
19 in. (48.3 cm.)
3.5 in. (8.9 cm.)
19 in. (48.3 cm.)
3.5 in. (8.9 cm.)
19 in. (48.3 cm.)
3.5 in. (8.9 cm.)
Depth
14.25 in. (36.2 cm.)
14.25 in. (36.2 cm.)
14.25 in. (36.2 cm.)
14.25 in. (36.2 cm.)
Net Weight
Shipping Weight
22.8 lb (10.3 kg),
27.7 lb (12.6 kg)
23.4 lb (10.6 kg),
28.3 lb ( 12.8 kg)
27.0 lb (12.2 kg)
32.0 lb (14.5 kg)
27.7 lb (12.6 kg)
32.7 lb (14.8 kg)
* With T-170V or TP-170V.
page 24
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CTs Power Amplifiers
7 Specifications
Figure 7.2 CTs 600/1200 Typical Crosstalk vs. Frequency
Figure 7.1 CTs 600/1200 Typical Frequency Response (1 W, 8 ohms)
Figure 7.3
CTs 600/1200
Typical Damping Factor
vs. Frequency
Operation Manual
page 25
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CTs Power Amplifiers
7 Specifications
Figure 7.5 CTs 2000/3000 Typical Crosstalk vs. Frequency
Figure 7.4 CTs 2000/3000 Typical Frequency Response (1W)
Figure 7.6
CTs 2000/3000
Typical Damping Factor
vs. Frequency
page 26
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CTs Power Amplifiers
8 AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation:
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.
Typical line impedance used.
Measurements made with 120VAC mains. Line current figures for 230VAC units derived by multiplying 120VAC figures by 0.5.
Data based on all channels driven.
CTs 600
Rated
Power
Line Current Line Current
Watts
Load
Thermal Dissipation
120VAC
230VAC
watts out
dissapated
watts in
Btu/hr
kcal/hr
At Idle
60
0
60
205
52
1/8th Power Pink Noise
Typical of program material
just at clip.
8 Ohms/Ch.
16 Ohms Bridge 600
300x2
5.8
7.4
7.0
4.2
2.9
3.7
3.5
2.1
461
631
583
336
78
78
38
75
383
554
545
261
1307
1890
1859
892
330
477
469
225
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
70V/Ch.
300x2
600
150x2
300
300x2
140/200V Bridge 600
1/3rd Power Pink Noise
Typical of program material
with severe clipping.
8 Ohms/Ch.
16 Ohms Bridge 600
300x2
8.6
11.3
10.8
6.5
4.3
5.6
5.4
3.3
716
968
964
527
200
204
102
207
516
764
862
320
1760
2608
2942
1091
444
657
742
275
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
70V/Ch.
300x2
600
150x2
300
300x2
140/200V Bridge 600
Operation Manual
page 27
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CTs Power Amplifiers
8 AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation:
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.
Typical line impedance used.
Measurements made with 120VAC mains. Line current figures for 230VAC units derived by multiplying 120VAC figures by 0.5.
Data based on all channels driven.
CTs 1200
Rated
Power
Line Current Line Current
Watts
Load
Thermal Dissipation
120VAC
230VAC
watts out
dissapated
watts in
Btu/hr
kcal/hr
At Idle
60
0
60
205
52
1/8th Power Pink Noise
Typical of program material
just at clip.
8 Ohms/Ch.
16 Ohms Bridge 1200
600x2
7.6
10.0
8.8
3.8
5.0
4.4
3.8
641
872
157
151
405
157
484
720
925
484
1651
2458
3158
1651
416
620
796
416
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
100V/Ch.
140/200V Bridge 1200
8 Ohms/Ch.
600x2
16 Ohms Bridge 1200
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
70V/Ch.
600x2
1200
250x2
500
1330
641
600x2
7.6
1/3rd Power Pink Noise
Typical of program material
with severe clipping.
11.5
15.5
13.4
11.5
5.7
7.8
6.7
5.7
996
1372
1217
996
403
405
168
403
593
967
2025
3300
3582
2025
511
832
903
511
600x2
1200
250x2
500
1050
593
600x2
140/200V Bridge 1200
page 28
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CTs Power Amplifiers
8 AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation:
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.
Typical line impedance used.
Measurements made with 120VAC mains. Data based on all channels driven.
Line current figures for 230VAC units derived by multiplying 120VAC figures by 0.5.
Line current figures for 100VAC units (not shown) are 1.2 times the line current figures of 120VAC units.
Power draw (”watts in”) of 100VAC units is the same as power draw of 120VAC units.
CTs 2000
Rated
Power
Line Current Line Current
Watts
Load
Thermal Dissipation
120VAC
230VAC
watts out
dissapated
watts in
Btu/hr
kcal/hr
At Idle (sleep mode)
40
0
40
137
34
1/8th Power Pink Noise
Typical of program material
just at clip.
8 Ohms/Ch.
16 Ohms Bridge 2000
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
70/100V/Ch.
140/200V Bridge 2000
1000x2
6.6
7.0
7.2
6.7
3.3
3.5
3.6
3.4
546
563
602
639
256
255
251
257
290
307
351
382
988
249
264
302
329
1000x2
2000
1000x2
2000
1000x2
1049
1198
1304
1/3rd Power Pink Noise
Typical of program material
with severe clipping.
8 Ohms/Ch.
16 Ohms Bridge 2000
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
70/100V/Ch.
140/200V Bridge 2000
1000x2
11.3
12.3
13.7
11.6
5.6
6.2
6.9
5.8
980
1064
1190
990
676
672
705
674
304
392
485
316
1036
1338
1655
1080
261
337
417
272
1000x2
2000
1000x2
2000
1000x2
Operation Manual
page 29
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CTs Power Amplifiers
8 AC Power Draw and Thermal Dissipation
AC Power Draw and Thermal Dissipation:
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.
Typical line impedance used.
Measurements made with 120VAC mains. Data based on all channels driven.
Line current figures for 230VAC units derived by multiplying 120VAC figures by 0.5.
Line current figures for 100VAC units (not shown) are 1.2 times the line current figures of 120VAC units.
Power draw (”watts in”) of 100VAC units is the same as power draw of 120VAC units.
CTs 3000
Rated
Power
Line Current Line Current
Watts
Load
Thermal Dissipation
120VAC
230VAC
watts out
dissapated
watts in
Btu/hr
kcal/hr
At Idle (sleep mode)
40
0
40
137
34
1/8th Power Pink Noise
Typical of program material
just at clip.
8 Ohms/Ch.
16 Ohms Bridge 2000
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
70/100V/Ch.
140/200V Bridge 2000
1000x2
7.2
8.5
9.6
7.2
3.6
4.2
4.8
3.6
579
697
790
579
313
381
384
313
266
316
405
266
907
1079
1384
907
229
272
349
229
1000x2
2000
1000x2
2000
1000x2
1/3rd Power Pink Noise
Typical of program material
with severe clipping.
8 Ohms/Ch.
16 Ohms Bridge 2500
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
70/100V/Ch.
140/200V Bridge 3000
1250x2
13.7
16.2
19.2
13.7
6.8
8.1
9.6
6.8
1196
1469
1686
1196
835
1010
1024
835
360
459
662
360
1230
1565
2259
1230
310
395
570
310
1500x2
3000
1500x2
3000
1500x2
page 30
Operation Manual
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CTs Power Amplifiers
CTs Multi-Channel Series
CTs 4200
CTs 8200
Operation Manual
page 31
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CTs Power Amplifiers
Crown Audio, Inc.
DECLARATION of CONFORMITY
Sue Whitfield
FOR COMPLIANCE QUESTIONS ONLY:
ISSUED BY: Crown Audio, Inc.
574-294-8289
1718 W. Mishawaka Road
swhitfi[email protected]
Elkhart, Indiana 46517 U.S.A.
European Representative’s Name and Address:
David Budge
10 Harvest Close
Yateley GU46 6YS
United Kingdom
Equipment Type: Commercial Audio Power Amplifiers
Family Name: CTs
Model Names: CTs 4200A, CTs 8200A
EMC Standards:
EN 55103-1:1995 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions
EN 55103-1:1995 Magnetic Field Emissions-Annex A @ 10 cm and 1 M
EN 61000-3-2:1995+A14:2000 Limits for Harmonic Current Emissions (equipment input current 16A per phase)
EN 61000-3-3:1995 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current 16A
EN 55022:1992 + A1: 1995 & A2:1997 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class B
EN 55103-2:1996 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity
EN 61000-4-2:1995 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge)
EN 61000-4-3:1996 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A)
EN 61000-4-4:1995 Electrical Fast Transient/Burst Immunity (Criteria B)
EN 61000-4-5:1995 Surge Immunity (Criteria B)
EN 61000-4-6:1996 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)
EN 61000-4-11:1994 Voltage Dips, Short Interruptions and Voltage Variation
Safety Standard:
EN 60065: 1998 Safety Requirements - Audio Video and Similar Electronic Apparatus
I certify that the product identified above conforms to the requirements of the EMC Council Directive 89/336/EEC as amended by 92/31/EEC, and the Low Voltage Directive 73/23/EES as amended by 93/68/EEC.
Signed
Larry Coburn
Date of Issue: March 1, 2002
Title: Senior Vice President of Manufacturing
page 32
Operation Manual
Due to line current harmonics, we recommend that you contact your supply authority before connection.
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CTs Power Amplifiers
CTs 4200
Maximum Average Power
in watts with 0.1% THD.
Dual
4 Channels Driven
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz 20 Hz–20 kHz
260W
180W
220W
215W
190W
220W
*
1 Channel Driven
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz 20 Hz–20 kHz
270W
220W
250W
225W
210W
245W
*
Bridge-Mono
2 Channel-Pairs Driven
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz
520W
400W
220W
430W
380W
220W
*
•
•
High power-density, with eight channels in
a 3U chassis and four channels in a 2U
chassis.
•
•
•
Proven Crown AB+B Multi-Mode® output
topology.
1 Channel-Pair Driven
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz
1 Welcome
Building on the foundation of the Com-Tech
560W
440W
250W
450W
420W
245W
®
Continuously-variable-speed fans
optimize cooling efficiency.
*
Series, Crown’s CTs Series offers new flexibility
and value for installed sound applications. The
Com-Tech Series were the first to offer
independent selection of high- and low-
impedance operation for a specific channel, and
CTs Series amplifiers continue that tradition,
with power levels and features carefully chosen
to perfectly integrate into fixed install design
requirements.
Selectable constant-voltage (70V/100V) or
low-impedance (8/4 ohm) operation for
each channel pair.
*
Constant Voltage full bandwidth power ratings support
100Hz - 20kHz due to automatic High-Pass Filters.
Three Year, No-Fault, Fully-Transferable
Warranty completely protects your
investment and guarantees its
specifications.
•
•
FIT (Fault Isolation Topology) circuitry
isolates faults within affected channels.
35 Hz High-Pass Filter (70 Hz in CTs 4200)
is automatically inserted when the channel
pair is set for constant-voltage operation.
(corner frequency may be changed as a
service option).
2 How to Use This
Manual
This manual provides you with the necessary
information to safely and correctly setup and
operate your amplifier. It does not cover every
aspect of installation, setup or operation that
might occur under every condition. For
additional information, please consult Crown’s
Amplifier Application Guide (available online at
your system installer or retailer.
CTs 8200
Maximum Average Power
in watts with 0.1% THD.
Dual
Modern power amplifiers are sophisticated
pieces of engineering capable of producing
extremely high power levels. They must be
treated with respect and correctly installed if
they are to provide the many years of reliable
service for which they were designed.
8 Channels Driven
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz 20 Hz–20 kHz
200W
160W
200W
175W
155W
185W
•
•
Accepts VC-MC accessory module that
tailors the amplifier for remote VCA level
control.
*
1 Channel Driven
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz 20 Hz–20 kHz
270W
220W
250W
230W
220W
230W
Comprehensive array of indicators
including Power and Data, along with
Bridge, Ready, Signal, Clip, Thermal and
Fault for each channel, provide accurate
diagnostics.
In addition, CTs Series amplifiers include a
number of features which require some
explanation before they can be used to their
maximum advantage.
*
Bridge-Mono
4 Channel-Pairs Driven
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz
We strongly recommend you read all
instructions, warnings and cautions contained
in this manual. Also, for your protection, please
send in your warranty registration card today, or
save your bill of sale—it’s your official proof of
purchase.
Please take the time to study this manual so that
you can obtain the best possible service from
your amplifier.
•
•
Blue Power Indicator flashes if the
amplifier shuts off due to an under-/over-
voltage condition on the AC mains.
400W
320W
200W
350W
310W
185W
*
Advanced protection circuitry guards
against: shorted outputs, open circuits,
DC, mismatched loads, general
overheating, under-/over-voltage, high-
frequency overloads and internal faults.
1 Channel-Pair Driven
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz
1.1 Features
540W
440W
250W
460W
440W
230W
®
•
New Crown Switching Power Supply for
reduced weight.
*
*
Constant Voltage full bandwidth power ratings support
100Hz - 20kHz due to automatic High-Pass Filters.
Operation Manual
page 33
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CTs Power Amplifiers
3 Setup
3.3 Ensure Proper Cooling
3.2 InstallYour Amplifier
3.1 UnpackYour Amplifier
When using an equipment rack, mount units
directly on top of each other. Close any open
spaces in rack with blank panels. DO NOT block
front, rear or side air vents. The side walls of the
rack should be a minimum of two inches (5.1
cm) away from the amplifier sides, and the back
of the rack should be a minimum of four inches
(10.2 cm) from the amplifier back panel.
CAUTION: Before you begin, make sure
your amplifier is disconnected from the
power source, with the power switch in
the “off” position and all level controls
turned completely down (counterclock-
wise).
Please unpack and inspect your amplifier for
any damage that may have occurred during
transit. If damage is found, notify the
transportation company immediately. Only you
can initiate a claim for shipping damage. Crown
will be happy to help as needed. Save the
shipping carton as evidence of damage for the
shipper’s inspection.
Use a standard 19-inch (48.3-cm) equipment
rack (EIA RS-310B). See Figure 3.1 for amplifier
dimensions.
Figure 3.2 illustrates standard amplifier airflow.
We also recommend that you save all packing
materials so you will have them if you ever need
to transport the unit. Never ship the unit
without the factory pack.
You may also stack amps without using a
cabinet.
NOTE: When transporting, amplifiers should be
supported at both front and back.
YOU WILL NEED (not supplied):
•
•
Input wiring cables
Output wiring cables
Rack for mounting amplifier (or a stable surface
for stacking)
WARNING: Before you start to set up
your amplifier, make sure you read and
observe the Important Safety Instruc-
tions found at the beginning of this
manual.
Fault
Thermal
Clip
Signal
Ready
Power
Data
1
Bridge
2
3
Bridge
4
Figure 3.2 Airflow
Figure 3.1 Dimensions
Left: CTs 4200 Right: CTs 8200
page 34
Operation Manual
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CTs Power Amplifiers
3 Setup
Figure 3.3 Balanced Input
Connector Wiring
3.4 Choose InputWire
and Connectors
Figure 3.3 shows connector pin assignments for balanced wiring, and Figure
3.4 shows connector pin assignments for unbalanced wiring.
See the Crown Amplifier
When possible, use balanced wiring for signal input, which provides better
rejection of unwanted noise and hum. For more information, refer to the Crown
Amplifier Application Guide, available online at www.crownaudio.com
Application Guide, available
for pin assignments for
NOTE: Custom wiring should only be performed by qualified
personnel.
Figure 3.4 Unbalanced Input
Connector Wiring
3.5 Choose OutputWire and
Connectors
NOTE: CTs 8200 is shown. Some CTs 4200 features are in different locations.
Crown recommends using professionally constructed, high-
quality, two- or four-conductor, heavy gauge speaker wire and connectors. You
may use terminal forks or bare wire for your output connectors (see Figure
3.5). CTs amplifier terminal strips accept up to 10 AWG terminal forks which fit
over a #8 screw. For best results, Crown recommends Panduit part #PV10-
10LF-L or equivalent terminal fork. Screw spacing is shown in Figure 3.5.
Output panel
shown with
touch-proof
cover plate
removed.
To connect outputs, first remove the touch-proof cover plate covering the
terminal strip by removing the screw which holds it in place.
To prevent the possibility of short-circuits, wrap or otherwise insulate exposed
loudspeaker cable and connectors. Also, a touch-proof cover plate, which
covers the terminal strips, is provided to help prevent short circuits. The cover
plate should be reinstalled after connecting outputs.
Suggested below are guidelines to select the appropriate size of wire based on
the distance from amplifier to speaker. Check with local code as this may vary.
Distance
Wire Size
16 AWG
up to 25 ft (7.6 m)
26-40 ft (7.9-12.2 m)
41-60 ft (12.5-18.3 m)
Over 60 ft (18.3 m)
14 AWG
12 AWG
10 AWG
CAUTION: Never connect the speaker return to the chassis of the
amplifier, or damage to the amplifier may result.
CAUTION: Never use shielded cable for output wiring.
Figure 3.5 Output Connector Wiring
(Typical of two channels)
Operation Manual
page 35
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CTs Power Amplifiers
3 Setup
See the Crown Amplifier
Application Guide, available
for pin assignments for
commonly used connector
types.
3.6WireYour System
CAUTION: Never change the position of
the Mode Switch while the amplifier
power is on. See Section 5.2.2 for more
information.
BRIDGE
DUAL
DUAL
CH 2
CH 1
Output panel
shown with
touch-proof
cover plate
removed.
3.6.1 Dual 8/4 Mode
Typical input and output wiring, along with level
control and Mode Switch settings are shown in
Figure 3.6. Make sure the Mode switch is set to
the “Dual 8/4” position.
CH 4
DUAL
CH 3
DUAL
BRIDGE
INPUTS: Connect input wiring for each channel.
OUTPUTS: Maintain proper polarity (+/–) on
output connectors.
Connect the Channel 1 speaker’s positive (+) lead
to amplifier Channel 1 positive terminal; repeat
for negative (–). Repeat each channel wiring as
for Channel 1. Refer to Section 3.5 for output
connector pin assignments.
Figure 3.6 System Wiring and Control Settings, Dual Mode, 8/4 Ohm
3.6.2 Dual 70V Mode
70V
CAUTION: Never change the position of
the Mode Switch while the amplifier
power is on. See Section 5.2.2 for more
information.
Typical input and output wiring, along with level
control and Mode Switch settings are shown in
Figure 3.7. Make sure the Mode switch is set to
the “Dual 70V” position.
BRIDGE
DUAL
DUAL
CH 2
CH 1
70V
Output panel
shown with
touch-proof
cover plate
removed.
INPUTS: Connect input wiring for each channel.
OUTPUTS: Maintain proper polarity (+/–) on
output connectors.
Connect Channel 1 positive (+) speaker load to
Channel 1 positive terminal of amp; repeat for
negative (–). Repeat each channel wiring as for
Channel 1. Refer to Section 3.5 for output
connector pin assignments.
CH 4
DUAL
CH 3
DUAL
BRIDGE
Figure 3.7 System Wiring and Control Settings, Dual Mode, 70V.
page 36
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CTs Power Amplifiers
3 Setup
3.6.3 Bridge-Mono 16/8 Mode
See the Crown
CAUTION: Never change the position of
the Mode Switch while the amplifier
power is on. See Section 5.2.2 for more
information.
Amplifier Application
Guide, available
online at www.
crownaudio.com, for
pin assignments for
commonly used
connector types.
BRIDGE
DUAL
DUAL
CH 2
CH 1
Typical input and output wiring, along with level
control and Mode Switch settings are shown in
Figure 3.8. Make sure the Mode switch is set to
the “Bridge 16/8” position.
INPUTS: Connect input wiring only to the lower-
(odd-) numbered channel pair.
CH 4
DUAL
CH 3
DUAL
BRIDGE
OUTPUTS: Connect the speaker across the
positive terminals of each channel pair. Do not
use the negative terminals of the channel pair
when the pair is being operated in Bridge-Mono
mode.
NOTE: When operating the channel pair in
Bridge-Mono mode, turn down (full CCW) the
level control for the higher (even)-numbered
channel of the channel pair. The lower (odd)-
numbered level control works both channels.
Figure 3.8 System Wiring and Control Settings, Bridge-Mono Mode, 16/8 Ohm.
100V
3.6.4 Bridge-Mono 100V Mode
CAUTION: Never change the position of
the Mode Switch while the amplifier
power is on. See Section 5.2.2 for more
information.
BRIDGE
DUAL
DUAL
Typical input and output wiring, along with level
control and Mode Switch settings are shown in
Figure 3.9. Make sure the Mode switch is set to
the “Bridge 100V” position.
CH 2
CH 1
INPUTS: Connect input wiring only to the lower-
(odd-) numbered channel pair.
CH 4
CH 3
OUTPUTS: Connect the speaker across the
positive terminals of each channel pair. Do not
use the negative terminals of the channel pair
when the pair is being operated in Bridge-Mono
mode.
DUAL
DUAL
BRIDGE
NOTE: When operating the channel pair in
Bridge-Mono mode, turn down (full CCW) the
level control for the higher (even)-numbered
channel of the channel pair. The lower (odd)-
numbered level control works both channels.
Figure 3.9 System Wiring and Control Settings, Bridge-Mono Mode, 100V
Operation Manual
page 37
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CTs Power Amplifiers
3 Setup
3.8 Startup Procedure
3.7 Connect to AC Mains
Use the following procedure when first turning on
your amplifier:
Connect your amplifier to the AC mains power source
(power outlet) with the supplied AC power cordset.
First, connect the IEC end of the cordset to the IEC
connector on the amplifier; then, plug the other end of
the cordset to the AC mains.
1. Turn down the level of your audio source.
2. Turn down the level controls of the amplifier.
WARNING: The third prong of this connector
(ground) is an important safety feature. Do not
attempt to disable this ground connection by
using an adapter or other methods.
3. Turn on the “Power” switch. The Power
indicator should glow.
4. Turn up the level of your audio source to an
optimum level.
Amplifiers don’t create energy. The AC mains voltage
and current must be sufficient to deliver the power you
expect. If the AC line voltage varies out of an acceptable
range, the amplifier’s power supply turns off and the
blue Power LED flashes. The amplifier will turn back on
when the AC line voltage returns to safe operating
levels. Figure 3.10 provides voltage limits for all
amplifier AC voltage configurations. Also, the amplifier
must be run within the specified mains frequency
requirements (indicated on the amplifier’s back panel
label). If you are unsure of the output voltage of your
AC mains, please consult your electrician.
5. Turn up the Level controls on the amplifier until
the desired loudness or power level is achieved.
6. Turn down the level of your audio source to its
normal range.
If you ever need to make any wiring or installation
changes, don’t forget to disconnect the power cord.
For help with determining your system’s optimum
gain structure (signal levels) please refer to the
Crown Amplifier Application Guide, available online
Under-Voltage
Limit
Over-Voltage
Limit
Models
100VAC
(CTs 8200
only)
90VAC
110VAC
120 VAC units
108VAC
198VAC
132VAC
264VAC
220V/230V/
240V units
Figure 3.10 AC Under-Voltage and Over-Voltage
Limits for Various Amplifier Models
page 38
Operation Manual
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CTs Power Amplifiers
4 Operation
4. WARNING: Never connect the output
to a power supply, battery or power
main. Electrical shock may result.
4.1 Precautions
Your amplifier is protected from internal and
external faults, but you should still take the
following precautions for optimum performance
and safety:
5. Tampering with the circuitry, or making
unauthorized circuit changes may be
hazardous and invalidates all agency listings,
and may also void the product’s warranty.
1. Before use, your amplifier first must be
configured for proper operation, including
input and output wiring hookup. Improper
wiring can result in serious operating
difficulties. For information on wiring and
configuration, please consult the Setup
section of this manual or, for advanced setup
techniques, consult Crown’s Amplifier
Application Guide available online at www.
crownaudio.com.
6. Do not operate the amplifier with the red Clip
LEDs constantly flashing.
7. Do not overdrive the mixer, which will cause
clipped signal to be sent to the amplifier. Such
signals will be reproduced with extreme
accuracy, and loudspeaker damage may result.
8. Use caution when operating the amplifier with
a 2-ohm load impedance on 1 channel. Do not
operate the amplifier with less than a 2-ohm
load impedance per channel when driving
more than 1 channel. Due to the amplifier’s
output protection, such a configuration may
result in premature clipping, speaker damage
or a blown power fuse.
2. Use care when making connections, selecting
signal sources and controlling the output
level. The load you save may be your own!
3. Do not short the ground lead of an output
cable to the input signal ground. This may
form a ground loop and cause oscillations.
Remember: Crown is not liable for damage that
results from overdriving other system components.
Operation Manual
page 39
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CTs Power Amplifiers
4 Operation
F. Fault Indicator
4.2 Front Panel Controls
and Indicators
C. Signal Indicator
Green LED, one per channel, illuminates to
indicate the presence of input signals
above –40 dBu.
Red LED, one per channel, illuminates
when the amplifier output channel has
stopped operating.
Note: CTs 8200 is shown. Some CTs 4200
features are in different locations.
G. Ventilation Grille
D. Clip Indicator
A. Bridge Mode Indicator
Red LED, one per channel, illuminates
when the THD of the channel’s output
signal rises to a level typically considered
as the onset of audible clipping. The Clip
Indicator also will illuminate during
Thermal Level Control (TLC) or input
overload.
Front-to-rear forced airflow.
Yellow LED, one per channel pair,
illuminates when the channel pair’s Mode
Switch is set to the “Bridge” position. If
Mode switch is changed while amplifier is
powered up, Bridge LED will flash,
indicating that the amplifier must be
powered off and on to reset the Mode. See
Section 6.9.
H. Data Indicator
Yellow LED indicates IQ Loop data activity
(if the amplifier is equipped with an IQ-MC
module, and connected to an IQ Loop).
I. Power Indicator
E. Thermal Indicator
Blue LED indicates amplifier has been
turned on and AC power is available.
Indicator also flashes if the amplifier shuts
off due to an under/over-voltage condition
on the AC mains.
B. Ready Indicator
Red LED, one per channel, flashes when
the channel has shut down due to thermal
stress or overload. If the power supply
goes into thermal overload, all channel
LEDs will flash.
Green LED, one per channel, illuminates
when the channel is initialized and ready to
produce audio output.
J. Power Switch
Amplifier is on when the switch is in the IN
position.
Figure 4.1 CTs 8200 front panel.
page 40
Operation Manual
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CTs Power Amplifiers
4 Operation
4.3 Back Panel Controls
and Connectors
P. Mode Switch
M. Accessory Panel
CTs 4200: Accepts an optional IQ-MC4A or
VCA-MC4A module.
Used on each consecutive pair of channels, this
four-position switch is used to select the
amplifier’s mode of operation: Dual 8/4 ohms,
Dual 70V, Bridge-Mono 16/8 ohms, and
Bridge-Mono 100V.
Note: CTs 8200 is shown. Some CTs 4200
features are in different locations.
CTs 8200: Accepts an optional IQ-MC8 or
VCA-MC8 module (explained in Section 5.3.1,
Control Modules).
K. AC Power Cord Connector
IMPORTANT: Be sure to power off the
amplifier before change the Mode-
switch setting. If this is not done, the Bridge
light will flash to indicate that the power must be
cycled off and back on to reset the mode.
Standard IEC type 320 inlet.
120V models: 15-amp.
220-240V models: 10-amp.
Voltage is indicated above IEC inlet.
N. Channel Level Controls
One 21-position detented rotary potentiometer
per channel, ranging from infinity (-70 dB) to
0 dB attenuation. Refer to Section 5.2.4 for
precise dB attenuation increments for each
detent.
L. Output Connectors
Q. Cooling Vents
Front-to-rear forced airflow.
One four-pole terminal strip for every two
channels with touch-proof cover. Accepts up to
10 AWG terminal forks. To connect outputs, first
remove the touch-proof cover plate covering the
terminal strip by removing the screw which
holds it in place.
O. Input Connectors
Removable Phoenix-style barrier connectors for
balanced input.
Figure 4.2 CTs 8200 back panel (shown with touch-proof cover removed).
Operation Manual
page 41
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CTs Power Amplifiers
5 Advanced Features
and Options
5.1.4 35-Hz High-Pass Filter
NOTE: For more information about these Crown
amplifier features, please visit the Crown
5.2 Advanced Features
A fixed 35-Hz (70-Hz in CTs 4200) high-pass filter per
channel pair is automatically inserted when the mode
switch is set to either of the constant-voltage settings. The
high-pass filter corner frequency can be set to 70 Hz, or
bypassed, with a service option.
5.2.1 Switching Power Supply
Crown’s new Switching Power Supply minimizes the
amplifier’s weight.
5.1 Protection Systems
Your Crown amplifier provides extensive protection and
diagnostic capabilities, including thermal level control,
fault indicators, automatic high-pass filtering, DC protect,
AC under-/over-voltage protection, inrush limiting, and
variable-speed fans.
Typical non-switching power supplies require large,
heavy transformers in order to produce the required
power at the output stage. These transformers must be
large to absorb the substantial waste that occurs when
operating at 50 to 60 Hz (standard AC supplied by the
power company).
5.1.5 AC Under-/Over-Voltage
Protection
If the AC line voltage varies out of an acceptable range,
the amplifier’s power supply turns off and the blue Power
LED flashes. The amplifier will turn back on when the AC
line voltage returns to safe operating levels. Figure 5.1
provides voltage limits for all amplifier AC voltage
configurations. Also, the amplifier must be run within the
specified mains frequency requirements (indicated on the
amplifier’s back panel label). If you are unsure of the
output voltage of your AC mains, consult your electrician.
5.1.1Thermal Level Control (TLC)
If an amplifier channel starts to overheat, the TLC circuit
will engage that channel’s input compressor. By
By contrast, switching power supplies can operate with a
much smaller (and lighter) transformer because they first
convert the AC up to a much higher frequency, thereby
reducing waste.
compressing the input, the amplifier will not generate as
much heat and will have a chance to cool down. The
degree of compression is proportional to the amount of
overheating. If the channel becomes too hot for safe
operation even after full TLC limiting, the channel will
shut off, and the Thermal Indicator for that channel will
flash brightly to alert the user that a state of thermal stress
or overload has cause the channel to shut down.
The power supply is voltage-specific, allowing use in
regions using 120V/60Hz, 220V/50Hz, 230V/50Hz,
240V/50Hz, and 100V/50Hz AC mains.
Under-Voltage
Limit
Over-Voltage
Limit
Models
5.2.2 Mode Switch
Each consecutive pair of channels has one four-position
switch that selects the amplifier’s mode of operation. The
switch positions are:
100VAC
90VAC
108VAC
198VAC
110VAC
132VAC
264VAC
(CTs 8200 only)
5.1.2 Fault
If an amplifier channel requires service, the correspond-
ing Fault indicator will illuminate to alert the user of this
condition. If this occurs, return the amplifier to the Crown
factory or to an authorized Crown service center.
120 VAC units
•
•
Dual mode for 4 or 8 ohm operation.
220V/230V/
240V units
Dual mode for 70V constant-voltage
operation.
Figure 5.1 AC Under-Voltage and
Over-Voltage Limits for Various Amplifier
Models
5.1.3 Fault IsolationTopology (FIT)
•
•
Bridge-Mono mode for 8 or 16 ohm operation.
Crown’s new FIT (Fault Isolation Topology) design
isolates channel-specific faults, and prevents them from
affecting remaining channels. If a CTs multi-channel amp
is powering multiple zones, and a channel fails, the other
zones continue to operate. FIT makes the CTs 4200 and
CTs 8200 the most trustworthy multi-channel amplifiers
in the business!
Bridge-Mono mode for 100V constant-voltage
operation.
5.1.6 Power Fuse
Be sure to turn off the amplifier before changing
the Mode-switch setting.
A fuse protects the amplifier from excessive AC current
draw.
5.2.3 Bridge Mode Indicator
5.1.7 Inrush Limiting
This yellow LED indicates when the amplifier’s mode
switch is set to the Bridge position. Each consecutive pair
of channels has one Bridge LED.
A soft-start circuit in the power supply minimizes the
amplifier’s current draw during power-on.
5.1.8Variable-speed Fans
Continuously variable speed fans direct the airflow
through the amplifier for cooling.
page 42
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CTs Power Amplifiers
5 Advanced Features
and Options
5.2.4 Channel Level Control
ATTENUATION in dB
4/8 Ohm
The signal level for each input can be attenuated
accurately by adjusting the 21-step Level
Control (see Section 4.2). Figure 5.2 shows the
amount of attenuation in dB for each detent.
Detent
70V
72.90
72.06
36.61
29.74
25.87
23.20
20.94
19.02
17.22
15.53
13.90
12.32
10.87
9.45
100V
71.02
70.26
34.90
28.00
24.22
21.58
19.40
17.53
15.79
14.20
12.62
11.16
9.81
0 (full CCW)
68.31
67.54
32.23
25.46
21.83
19.23
17.12
15.36
13.76
12.28
10.84
9.51
1
Note: Attenuation per detent varies with
operating mode since gain varies with operating
mode. Attenuation amounts shown may vary
6%.
2
3
4
5
6
7
8
9
10
11
12
8.28
13
7.09
8.45
14
6.30
8.11
7.22
15
4.92
6.70
5.94
16
3.82
5.26
4.63
17
18
2.62
3.70
3.21
1.35
1.90
1.66
19
0.01
0.01
0.01
20 (full CW)
0.00
0.00
0.00
Figure 5.2 Level-control Attenuation per Detent in CTs Multichannel Amplifiers
Operation Manual
page 43
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CTs Power Amplifiers
5 Advanced Features
and Options
5.3 Options
Choosing the Right Module
Wall-Mount level control panels for use with
VCA module:
To order accessory modules for your amplifier,
please refer to the model tag (located on the back
panel of the amplifier) for your amplifier’s specific
model number. Then refer to the chart below to select
the correct accessory for your requirements.
Below are some available options. For current
options, visit the Crown website at www.
crownaudio.com.
1-VCAP: See Figure 5.4. Used in conjunction with a
VCA-MC module, this is a single-gang panel
providing remote volume control for one or more
CTs amplifier channels. The potentiometer on the
panel is wired directly to one of the VCA connectors
on the VCA-MC.
5.3.1 Control Modules
VCA-MC (VCA module): See Figure 5.3. Provides
independent remote level control for each channel.
4-pin removable Phoenix-style barrier connectors
provide the +10VDC control voltage, ground, and
control lines for two amplifier channels. Thus, 4-
channel amplifiers use two connectors; 8-channel
amplifiers use four connectors.
VCA MODULE
4-VCAP: See Figure 5.5. This is a two-gang panel
providing remote volume control for four or more
CTs amplifier channels. The potentiometers on the
panel are wired directly to the respective VCA
connector on the VCA-MC.
CTs 4200
CTs 4200A
CTs 8200
CTs 8200A
VCA-MC4
VCA-MC4A
VCA-MC8
VCA-MC8
Figure 5.4 1-VCAP Module
Refer to the VCA-MC Operation Manual for wiring of
the single or multiple channel level control.
Your amplifier may have come with a VCA-MC
module already factory-installed, or your choice of
MC modules can be easily added to the amplifier by
any authorized Crown Service Center. Contact
Crown Technical Support for more details.
5.3.2 Input Sensitivity
The CTs 4200 and CTs 8200 have a fixed input
sensitivity of 1.4V. A service option is available for
other input sensitivities.
Figure 5.5 4-VCAP Module
Figure 5.3 VCA-MC8 Module
page 44
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CTs Power Amplifiers
6 Troubleshooting
CONDITION: Fault indicator is on.
CONDITION: Power indicator is off.
POSSIBLE REASON:
POSSIBLE REASON
•
The amplifier channel has stopped
operating. Return the unit to an
authorized Crown Service Center.
•
•
•
The amplifier has lost AC power.
The amplifier’s Power switch is off.
The amplifier is not plugged into the
power receptacle.
•
The amplifier output level is so high that
the power supply fuse has blown. Verify
that input levels and output impedances
are within safe ranges. Refer the unit to
an authorized Crown service center for
fuse replacement.
CONDITION: Distorted sound.
POSSIBLE REASON:
•
•
Load is wired incorrectly or Dual/Bridge
mode switch is set incorrectly. Check
both.
Input is overloaded by a signal level that is
too high. Turn down your amplifier level
controls, or turn down the input signal,
until the clip light goes out.
CONDITION: Power indicator is
flashing.
POSSIBLE REASON:
•
Thermal Level Control (TLC) is active.
•
The AC line voltage has dropped below
10% or has risen above 10% of the
nominal line voltage of the power supply.
Note: If the signal sounds distorted even
though the Clip LED is off, the input signal is
distorted. Check gain staging and output
levels of the mixer or preamp.
Refer to section 5.1.6 for specific voltage
requirements.
Operation Manual
page 45
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CTs Power Amplifiers
6 Troubleshooting
CONDITION: No sound, even though
the amp has power. Power LED is on
without flashing and the amp is receiving an
input signal. Signal indicator is flashing.
CONDITION:Thermal indicator is
flashing.
POSSIBLE REASON:
•
The amplifier has become too hot for
safe operation. Check for loads less than
2 ohms, and for excessive input levels.
Check for proper ventilation and proper
mode-switch setting. Driving low-
impedance loads while in high-voltage
mode can cause overheating.
•
•
Speakers not connected.
Open circuit due to speaker failure.
CONDITION: All channel thermal
indicators are flashing.
•
•
There is a short on the amplifier
output. First disconnect your speakers
from the affected channel(s) one by one
to determine if one of the loads is
shorted.
POSSIBLE REASON:
•
Power supply thermal overload.
CONDITION: No input signal.
(Signal indicator is not flashing even though
audio is applied and channel is ready).
DC or excessive low-frequency signal at
the amplifier’s output has enabled
speaker protection.
POSSIBLE REASON:
•
•
Input signal level is very low.
Input cables have become disconnected.
CONDITION: Bridge LED is flashing.
POSSIBLE REASON:
•
The mode switch was switched while the
power was on.
page 46
Operation Manual
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CTs Power Amplifiers
7 Specifications
(in watts, 0.1% THD) 120VAC, 60 Hz units
CTs 4200: MINIMUM GUARANTEED POWER
Dual Mode
Channels Driven
4
2
1 kHz
1
1 kHz
20 Hz - 20 kHz
1 kHz
20 Hz - 20 kHz
4 Ohm
8 Ohm
260
180
220
215
190
220*
270
210
240
270
220
250
225
210
245*
Figure 7.1 CTs 4200
Power Chart
25 Ohm) at 0.1% THD
70V (
Bridge-Mono Mode
Channel Pairs Driven
2
1
1 kHz
20 Hz - 20 kHz
1 kHz
20 Hz - 20 kHz
8 Ohm
16 Ohm
100V (50 Ohm)
520
400
220
430
380
220*
560
440
250
450
420
245*
at 0.1% THD
* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.
CTs 8200: MINIMUM GUARANTEED POWER (In watts, 0.1% THD) 120VAC, 60 Hz units
Dual Mode
Channels Driven
4
1
1
2
8
1 kHz
1 kHz
1 kHz
20 Hz - 20 kHz
20 Hz - 20 kHz
1 kHz
200
160
200
175
155
185*
270
220
250
4 Ohm
8 Ohm
250
190
220
230
220
230*
260
200
240
70V (25 Ohm) at 0.1% THD
Bridge-Mono Mode
Channel Pairs Driven
Figure 7.2 CTs 8200
Power Chart
4
2
20 Hz - 20 kHz
1 kHz
1 kHz
1 kHz
20 Hz - 20 kHz
8 Ohm
16 Ohm
100V (50 Ohm) at 0.1% THD
500
380
220
400
320
200
350
310
185*
540
440
250
460
440
230*
* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.
Operation Manual
page 47
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CTs Power Amplifiers
The following specifications apply to all models in Dual 8/4 ohm mode with 8-ohm loads unless otherwise specified.
7 Specifications
Performance
CTs 4200
0.5 dB
CTs 8200
Frequency Response (at 1 watt, 20 Hz - 20 kHz)
Phase Response (at 1 watt, 10 Hz - 20 kHz)
0.5 dB
35°
35°
Signal to Noise Ratio below rated power (20 Hz to 20 kHz)
Total Harmonic Distortion (THD) at 1 watt, from 20 Hz to 20 kHz
100 dB unweighted
< 0.05%
100 dB unweighted
< 0.05%
Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1,
from 163 milliwatts to full bandwidth power, typical
< 0.05%
< 0.05%
Damping Factor: 10 Hz to 400 Hz
>180
>180
Crosstalk (below rated power, 20 Hz to 1 kHz)
Common Mode Rejection (CMR) (20 Hz to 1 kHz)
DC Output Offset (Shorted input)
> 80 dB
> 50 dB
> 80 dB
> 50 dB
<
5 mV
<
5 mV
Input Impedance nominally balanced, nominally unbalanced
Maximum Input Level (before input compression)
20 kilohms, 10 kilohms
+ 20 dBu
20 kilohms, 10 kilohms
+ 20 dBu
Load Impedance (Note: Safe with all types of loads)
Stereo
Bridge Mono
4/8 and 25 ohms (70V)
8/16 and 50 ohms (100V)
4/8 and 25 ohms (70V)
8/16 and 50 ohms(100V)
Voltage Gain (at maximum level setting), 1.4V sensitivity
4/8 Ohm Operation
70V Operation
20:1 (26 dB)
50:1 (34 dB)
71.4:1 (37 dB)
20:1 (26 dB)
50:1 (34 dB)
71.4:1 (37 dB)
100V Operation
Required AC Mains (model dependent)
Power Draw at Idle (120VAC mains, all channels in 4/8 ohm mode)
Power Draw at Idle (120VAC mains, all channels in 70V mode)
Cooling
120V, 60 Hz. 220/230/240V, 50 Hz
70W
100V, 50/60Hz. 120V, 60 Hz. 220/230/240V, 50 Hz
70W
114W
114W
Continuously variable speed forced air, front-to-back airflow
19 in. (48.3 cm) W x 3.5 in. (8.9 cm) H x 16.25 in. (41.3 cm) D
26 lb. 6 oz. (12 kg), 30 lb. 14 oz. (14 kg)
Continuously variable speed forced air, front-to-back airflow
19 in. (48.3 cm) W x 5.25 in. (13.3 cm) H x 16.25 in. (41.3 cm) D
36 lb. 6 oz. (16.5 kg), 47 lb. (21.3 kg)
Dimensions: Width, Height, Depth
Net Weight, Shipping Weight
page 48
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CTs Power Amplifiers
7 Specifications
Figure 7.4 CTs 8200 Typical Phase Response (1 W)
Figure 7.3 CTs 8200 Typical Frequency Response (1 W)
Figure 7.5 CTs 8200 Typical Damping Factor vs. Frequency
Operation Manual
page 49
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CTs Power Amplifiers
7 Specifications
Figure 7.6 CTs 8200 Typical Output Impedance vs. Frequency
Figure 7.7 CTs 8200 Typical Crosstalk vs. Frequency
page 50
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CTs Power Amplifiers
8 AC Power Draw and
Thermal Dissipation
AC Power Draw and Thermal Dissipation:
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.
Typical line impedance used.
Measurements made with 120VAC mains. Line current figures for 230VAC units derived by multiplying 120VAC figures by 0.5.
Data based on all channels driven.
CTs 4200
Rated
Power
Line Current Line Current
Watts
Load
Thermal Dissipation
120VAC
230VAC
watts out
dissapated
70
watts in
70
114
Btu/hr
239
389
kcal/hr
At Idle (8.4 Ohm mode )
At Idle (70/100V mode)
0
0
60
98
114
1/8th Power Pink Noise
Typical of program material
just at clip.
8 Ohms/Ch.
16 Ohms Bridge 400x2
4 Ohms/Ch.
8 Ohms Bridge
70V/Ch.
200x4
5.2
7.8
5.3
2.6
3.9
2.7
400
639
427
99
301
505
318
1027
1722
1084
259
434
273
260x4
520x2
220x4
220x2
134
110
100V Bridge
1/3rd Power Pink Noise
Typical of program material
with severe clipping.
8 Ohms/Ch.
16 Ohms Bridge 400x2
4 Ohms/Ch.
8 Ohms Bridge
70V/Ch.
200x4
7.6
11.8
7.9
3.8
5.9
4.0
648
1005
668
257
349
286
391
655
382
1336
2236
1303
337
564
329
260x4
520x2
220x4
220x2
100V Bridge
Operation Manual
page 51
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CTs Power Amplifiers
8 AC Power Draw and
Thermal Dissipation
AC Power Draw and Thermal Dissipation:
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.
Typical line impedance used.
Measurements made with 120VAC mains. Line current figures for 230VAC units derived by multiplying 120VAC figures by 0.5.
Data based on all channels driven.
CTs 8200
Rated
Power
Line Current Line Current
Watts
Load
Thermal Dissipation
120VAC
230VAC
watts out
dissapated
70
watts in
70
114
Btu/hr
239
389
kcal/hr
At Idle (8.4 Ohm mode )
At Idle (70/100V mode)
0
0
60
98
114
1/8th Power Pink Noise
Typical of program material
just at clip.
8 Ohms/Ch.
16 Ohms Bridge 320x4
4 Ohms/Ch.
8 Ohms Bridge
70V/Ch.
160x8
8.7
4.3
6.7
5.1
725
1155
857
172
218
203
553
938
653
1889
3200
2230
476
807
562
200x8
400x4
200x8
200x4
13.3
10.1
100V Bridge
1/3rd Power Pink Noise
Typical of program material
with severe clipping.
8 Ohms/Ch.
16 Ohms Bridge 320x4
4 Ohms/Ch.
8 Ohms Bridge
70V/Ch.
160x8
13.1
19.3
15.3
6.5
9.7
7.7
1136
1748
1344
437
557
552
699
1190
792
2385
4062
2702
601
1024
681
200x8
400x4
200x8
200x4
100V Bridge
page 52
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CTs Power Amplifiers
9 Service
Crown amplifiers are quality units that rarely require
servicing. Before returning your unit for service, please
contact Crown Technical Support to verify the need for
servicing.
5. Record the SRA number for future reference. The
SRA number can be used to check the repair status.
2. Carefully place your product with the product’s front
panel facing the same direction as arrows indicate.
be obtained from Crown Factory Service, or online from
3. Reset center cushion down over top of product’s
chassis. The foam-in-place packing was molded to
accommodate different chassis depth sizes. If your
product’s chassis does not completely fill the foam-
in-place cavity, you may use a soft but solid packing
material (such as paper or bubble wrap) behind the
chassis.
9.2.4 Packing Instructions
9.2.2 Factory Service
Important: These instructions must be followed. If they
are not followed, Crown Audio, Inc. assumes no
responsibility for damaged goods and/or accessories that
are sent with your unit.
Crown accepts no responsibility for non-serviceable
product that is sent to us for factory repair. It is the owner’s
responsibility to ensure that their product is serviceable
prior to sending it to the factory. Serviceable product list
is available at
For more information, please contact us direct.
This unit has very sophisticated circuitry which should
only be serviced by a fully trained technician. This is one
reason why each unit bears the following label:
CAUTION: To prevent electric shock, do not
remove covers. No user serviceable parts inside.
Refer servicing to a qualified technician.
1. Fill out and include the Crown Audio Factory Service
Information sheet in the back of this manual.
4. Enclose the completed Crown Audio Factory Service
Information form (or securely attach it to the outside
of carton) and re-seal the shipping pack with a sturdy
carton sealing tape.
Complete the Crown Audio Factory Service Information
form, in the back of this manual, when returning a Crown
product to the factory or authorized service center. The
form must be included with your product inside the box or
in a packing slip envelope securely attached to the outside
of the shipping carton. Do not send this form separately.
A Service Return Authorization (SRA) is required for
product being sent to the factory for repair. An SRA can be
factserv.htm. If you do not have access to the web, please
call Crown’s Customer Service at 574.294.8200 or
800.342.6939 extension 8205.
2. Do not ship any accessories (manuals, cords,
hardware, etc.) with your unit. These items are not
needed to service your product. We will not be
responsibility for these items.
9.2.5 Estimate Approval
Approval of estimate must be given within 30 days after
being notified by Crown Audio Inc. Units still in the
possession of Crown after 30 days of the estimate will
become the property of Crown Audio Inc.
3. When shipping your Crown product, it is important
that it has adequate protection. We recommend you
use the original pack material when returning the
product for repair. If you do not have the original box,
please call Crown at 800.342.6939 or 574.294.8210
and order new pack material. See instructions for
“foam-in-place” shipping pack. (Do not ship your
unit in a wood or metal cabinet.)
Warranty is only valid within the country in which the
product is purchased.
For warranty service, we will pay for ground shipping
both ways in the United States. Contact Crown Customer
Service to obtain prepaid shipping labels prior to sending
the unit. Or, if you prefer, you may prepay the cost of
shipping, and Crown will reimburse you. Send copies of
the shipping receipts to Crown to receive reimbursement.
Your repaired unit will be returned via UPS ground.
Please contact us if other arrangements are required.
9.1 International and Canada Service
9.2.6 Payment of Non-Warranty Repairs
Service may be obtained from an authorized service
center. (Contact your local Crown/Amcron representative
or our office for a list of authorized service centers.) To
obtain service, simply present the bill of sale as proof of
purchase along with the defective unit to an authorized
service center. They will handle the necessary paperwork
and repair.
Payment on out-of-waranty repairs must be received
within 30 days of the repair date. Units unclaimed after 30
days become the property of Crown Audio Inc.
4. If you provide your own shipping pack, the minimum
recommended requirements for materials are as
follows:
If you have any questions, please contact Crown Factory
Service.
9.2.3 Factory Service Shipping Instruc-
tions:
a. 275 P.S.I. burst test, Double-Wall carton that allows
for 2-inch solid Styrofoam on all six sides of unit or 3
inches of plastic bubble wrap on all six sides of unit.
Crown Factory Service
1718 W. Mishawaka Rd.,
Elkhart, Indiana 46517 U.S.A.
1. Service Return Authorization (SRA) is required for
product being sent to the factory for service. Please
complete the SRA by going to
Remember to transport your unit in the original factory
pack.
b. Securely seal the package with an adequate carton
sealing tape.
do not have access to our website, call
1.800.342.6939, extension 8205 and we’ll create the
SRA for you.
9.2 US Service
Telephone:
574.294.8200
800.342.6939 (North America,
Puerto Rico, and Virgin Islands only)
Service may be obtained in one of two ways: from an
authorized service center or from the factory. You may
choose either. It is important that you have your copy of
the bill of sale as your proof of purchase.
c. Do not use light boxes or “peanuts”. Damage caused
by poor packaging will not be covered under
warranty.
2. See packing instructions that follow.
Facsimile:
574.294.8301 (Technical Support)
574.294.8124 (Factory Service)
Using your ‘foam-in-place’ shipping pack
3. Ship product to:
9.2.1 Service at a US Service Center
CROWN AUDIO FACTORY SERVICE
1718 W MISHAWKA RD.
ELKHART, IN 46517
Note: The foam-in-place packing is molded so that there
is only one correct position for your product.
This method usually saves the most time and effort.
Simply present your bill of sale along with the defective
unit to an authorized service center to obtain service. They
will handle the necessary paperwork and repair.
Remember to transport the unit in the original factory
pack. A list of authorized service centers in your area can
Internet:
1. Open carton and lift center cushion leaving both end-
cushions in place.
4. Use a bold black marker and write the SRA number
on three sides of the box.
Operation Manual
page 53
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CTs Power Amplifiers
10 Warranty
UNITED STATES & CANADA
SUMMARY OFWARRANTY
the actual purchase price, not including interest,
insurance, closing costs, and other finance
charges less a reasonable depreciation on the
product from the date of original purchase.
Warranty work can only be performed at our
authorized service centers or at the factory.
Warranty work for some products can only be
performed at our factory. We will remedy the
defect and ship the product from the service center
or our factory within a reasonable time after
receipt of the defective product at our authorized
service center or our factory. All expenses in
remedying the defect, including surface shipping
costs in the United States, will be borne by us.
(You must bear the expense of shipping the
product between any foreign country and the port
of entry in the United States including the return
shipment, and all taxes, duties, and other customs
fees for such foreign shipments.)
THIS INCLUDES ANY DAMAGE TO ANOTHER
PRODUCT OR PRODUCTS RESULTING FROM
SUCH A DEFECT. SOME STATES DO NOT ALLOW
THE EXCLUSION OR LIMITATIONS OF
INCIDENTAL OR CONSEQUENTIAL DAMAGES,
SO THE ABOVE LIMITATION OR EXCLUSION
MAY NOT APPLY TO YOU.
Crown International, 1718 West Mishawaka Road,
Elkhart, Indiana 46517-4095 U.S.A. warrants to
you, the ORIGINAL PURCHASER and ANY
SUBSEQUENT OWNER of each NEW Crown
product, for a period of three (3) years from the
date of purchase by the original purchaser (the
“warranty period”) that the new Crown product is
free of defects in materials and workmanship. We
further warrant the new Crown product regardless
of the reason for failure, except as excluded in this
Warranty.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or
modify this Crown Warranty. This Crown Warranty
is not extended by the length of time which you are
deprived of the use of the new Crown product.
Repairs and replacement parts provided under the
terms of this Crown Warranty shall carry only the
unexpired portion of this Crown Warranty.
Warranty is only valid within the country in which
the product was purchased.
ITEMS EXCLUDED FROMTHIS
CROWNWARRANTY
DESIGN CHANGES
This Crown Warranty is in effect only for failure of
a new Crown product which occurred within the
Warranty Period. It does not cover any product
which has been damaged because of any
We reserve the right to change the design of any
product from time to time without notice and with
no obligation to make corresponding changes in
products previously manufactured.
HOWTO OBTAINWARRANTY
SERVICE
intentional misuse, accident, negligence, or loss
which is covered under any of your insurance
contracts. This Crown Warranty also does not
extend to the new Crown product if the serial
number has been defaced, altered, or removed.
You must notify us of your need for warranty
service within the warranty period. All
LEGAL REMEDIES OF PURCHASER
components must be shipped in a factory pack,
which, if needed, may be obtained from us free of
charge. Corrective action will be taken within a
reasonable time of the date of receipt of the
defective product by us or our authorized service
center. If the repairs made by us or our authorized
service center are not satisfactory, notify us or our
authorized service center immediately.
THIS CROWN WARRANTY GIVES YOU SPECIFIC
LEGAL RIGHTS, YOU MAY ALSO HAVE OTHER
RIGHTS WHICH VARY FROM STATE TO STATE.
No action to enforce this Crown Warranty shall be
commenced after expiration of the warranty
period.
WHATTHEWARRANTORWILL DO
We will remedy any defect, regardless of the
reason for failure (except as excluded), by repair,
replacement, or refund. We may not elect refund
unless you agree, or unless we are unable to
provide replacement, and repair is not practical or
cannot be timely made. If a refund is elected, then
you must make the defective or malfunctioning
product available to us free and clear of all liens or
other encumbrances. The refund will be equal to
THIS STATEMENT OF WARRANTY SUPERSEDES
ANY OTHERS CONTAINED IN THIS MANUAL FOR
DISCLAIMER OF CONSEQUENTIAL
AND INCIDENTAL DAMAGES
CROWN PRODUCTS.
9/07
YOU ARE NOT ENTITLED TO RECOVER FROM US
ANY INCIDENTAL DAMAGES RESULTING FROM
ANY DEFECT IN THE NEW CROWN PRODUCT.
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CTs Power Amplifiers
10 Warranty
WORLDWIDE EXCEPT USA & CANADA
SUMMARY OF WARRANTY
WHAT THE WARRANTOR WILL DO
DISCLAIMER OF CONSEQUENTIAL AND
INCIDENTAL DAMAGES
Crown International, 1718 West Mishawaka Road,
Elkhart, Indiana 46517-4095 U.S.A. warrants to
you, the ORIGINAL PURCHASER and ANY
SUBSEQUENT OWNER of each NEW Crown1
product, for a period of three (3) years from the
date of purchase by the original purchaser (the
“warranty period”) that the new Crown product is
free of defects in materials and workmanship, and
we further warrant the new Crown product
regardless of the reason for failure, except as
excluded in this Warranty.
We will remedy any defect, regardless of the
reason for failure (except as excluded), by repair,
replacement, or refund. We may not elect refund
unless you agree, or unless we are unable to
provide replacement, and repair is not practical or
cannot be timely made. If a refund is elected, then
you must make the defective or malfunctioning
product available to us free and clear of all liens or
other encumbrances. The refund will be equal to
the actual purchase price, not including interest,
insurance, closing costs, and other finance
charges less a reasonable depreciation on the
product from the date of original purchase.
Warranty work can only be performed at our
authorized service centers. We will remedy the
defect and ship the product from the service center
within a reasonable time after receipt of the
defective product at our authorized service center.
YOU ARE NOT ENTITLED TO RECOVER FROM US
ANY INCIDENTAL DAMAGES RESULTING FROM
ANY DEFECT IN THE NEW CROWN PRODUCT.
THIS INCLUDES ANY DAMAGE TO ANOTHER
PRODUCT OR PRODUCTS RESULTING FROM
SUCH A DEFECT.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or
modify this Crown Warranty. This Crown Warranty
is not extended by the length of time which you are
deprived of the use of the new Crown product.
Repairs and replacement parts provided under the
terms of this Crown Warranty shall carry only the
unexpired portion of this Crown Warranty.
Warranty is only valid within the country in which
the product is purchased.
1
Note: If your unit bears the name “Amcron,” please substitute it
for the name “Crown” in this warranty.
ITEMS EXCLUDED FROM THIS CROWN-
WARRANTY
DESIGN CHANGES
We reserve the right to change the design of any
product from time to time without notice and with
no obligation to make corresponding changes in
products previously manufactured.
This Crown Warranty is in effect only for failure of
a new Crown product which occurred within the
Warranty Period. It does not cover any product
which has been damaged because of any
intentional misuse, accident, negligence, or loss
which is covered under any of your insurance
contracts. This Crown Warranty also does not
extend to the new Crown product if the serial
number has been defaced, altered, or removed.
HOW TO OBTAIN WARRANTY SERVICE
You must notify your local Crown importer of your
need for warranty service within the warranty
period. All components must be shipped in the
original box. Corrective action will be taken within
a reasonable time of the date of receipt of the
defective product by our authorized service center.
If the repairs made by our authorized service
center are not satisfactory, notify our authorized
service center immediately.
LEGAL REMEDIES OF PURCHASER
No action to enforce this Crown Warranty shall be
commenced after expiration of the warranty period.
THIS STATEMENT OF WARRANTY SUPERSEDES
ANY OTHERS CONTAINED IN THIS MANUAL FOR
CROWN PRODUCTS.
9/07
Operation Manual
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NOTES
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CTs Power Amplifiers
PRODUCT REGISTRATION
Crown Audio, Inc.
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439
Phone: 574-294-8000
Fax: 574-294-8329
Warranty is only valid within the country in which the product is purchased.
When this form is used to register your product, it may be mailed or faxed.
Crown Audio, Inc.
1718 W Mishawaka Rd
Elkhart IN 46517
Fax: 574-294-8329
Please note that some information is required. Incomplete registrations will not be processed. * Indicates required information.
OWNER’S INFORMATION - PLEASE PRINT
* First name: ______________________ Middle initial: _____ * Last name: ________________________________
Company: _________________________________________________________________________________
* Mailing address: ____________________________________________________________________________
* City: ____________________________* State: ___________________________* Zip Code: ________________
* Country: __________________________ E-mail address: ___________________________________________
* Phone # (include area code): ___________________________ Fax #: __________________________________
PRODUCT INFORMATION
* MODEL
e.g. IT8000, CDi1000, PCC160
* SERIAL #
e.g. 8000000000
* PURCHASE DATE
mo/day/yr
________________________________
________________________________
________________________________
________________________________
____________________
____________________
____________________
____________________
______ /_____ /_____
______ /_____ /_____
______ /_____ /_____
______ /_____ /_____
Product purchased from: *(Business/Individual) ___________________________ Country: ________________________
Comments: ____________________________________________________________________________________
_____________________________________________________________________________________________
_____________________________________________________________________________________________
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Crown Audio Factory Service Information
Shipping Address: Crown Audio Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517
PLEASE PRINT CLEARLY
SRA #: __________________(If sending product to Crown factory service.)
Model: ____________________________________________
Serial Number: _____________________
Purchase Date: _____________
PRODUCT RETURN INFORMATION
Individual or Business Name: ____________________________________________________________________________________________________________________________________________________________
Phone #: __________________________________________________ Fax #: ________________________________________ E-Mail: _______________________________________________________
Street Address (please, no P.O. Boxes): _____________________________________________________________________________________________________________________________________________________
City: __________________________________________ State/Prov: ________________________________ Postal Code: _________________ Country: _________________________
Nature of problem: ___________________________________________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________________________________________________
Other equipment in your system: _________________________________________________________________________________________________________________________________________________________
If warranty is expired, please provide method of payment. Proof of purchase may be required to validate warranty.
PAYMENT OPTIONS
I have open account payment terms. Purchase order required. PO#: __________________________________
COD
Credit Card (Information below is required; however if you do not want to provide this information at this time, we will contact you when your unit is repaired for the information.)
Credit card information:
Type of credit card:
MasterCard
Personal/Consumer
Visa
American Express
Discover
Type of credit card account:
Business/Corporate
Card # ______________________________________________ Exp. date: _____________ * Card ID #: __________________________
* Card ID # is located on the back of the card following the credit card #, in the signature area. On American Express, it may be located on the front of the card. This number is required to process the charge to your account. If you do not want to provide
it at this time, we will call you to obtain this number when the repair of your unit is complete.
Name on credit card:
____________________________________________________________________________
Billing address of credit card: __________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
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