CTs Multi-Channel Series
CTs 4200
CTs 8200
Operation Manual
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: Crown, Crown Audio, Amcron, Com-Tech, IQ System, and Multi-Mode are registered trademarks of Crown Inter-
national. Other trademarks are the property of their respective owners.
Some models may be exported under the name Amcron.®
©2005 by Crown Audio® Inc., 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8000
134434-7A
3/05
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CTs Multi-Channel Power Amplifiers
Crown International, Inc.
DECLARATION of CONFORMITY
Sue Whitfield
FOR COMPLIANCE QUESTIONS ONLY:
ISSUED BY: Crown International, Inc.
1718 W. Mishawaka Road
574-294-8289
Elkhart, Indiana 46517 U.S.A.
European Representative's Name and Address:
Nick Owen
35, Bassets Field
Thornhill
Cardiff. South Glamorgen
CF14 9UG 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
Operation Manual
page 3
Due to line current harmonics, we recommend that you contact your supply authority before connection.
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CTs Multi-Channel Power Amplifiers
Important Safety Instructions .......................................................2
Declaration of Conformity ............................................................3
1 Welcome ..................................................... 5
1.1 Features ...........................................................................5
2 How to Use This Manual .................................. 5
3 Setup ......................................................... 6
3.1 Unpack Your Amplifier .....................................................6
3.2 Install Your Amplifier .......................................................6
3.3 Ensure Proper Cooling ....................................................6
3.4 Choose Input Wire and Connectors .................................7
3.5 Choose Output Wire and Connectors ...............................7
3.6 Wire Your System ............................................................8
3.6.1 Dual 8/4 Mode ........................................................8
3.6.2 Dual 70V Mode .......................................................8
3.6.3 Bridge-Mono 16/8 Mode ........................................9
3.6.4 Bridge-Mono 100V Mode .......................................9
3.7 Connect to AC Mains .......................................................10
3.8 Startup Procedure ............................................................10
4 Operation .................................................... 11
4.1 Precautions ......................................................................11
4.2 Front Panel Controls and Indicators .................................12
4.3 Back Panel Controls and Connectors ...............................13
5 Advanced Features and Options.......................... 14
5.1 Protection Systems ..........................................................14
5.1.1 Thermal Level Control (TLC) ..................................14
5.1.2 Fault .......................................................................14
5.1.3 Fault Isolation Topology (FIT) .................................14
5.1.4 35-Hz High-Pass Filter ...........................................14
5.1.5 AC Under-/Over-Voltage Protection .......................14
5.1.6 Power Fuse .............................................................14
5.1.7 Inrush Limiting .......................................................14
5.1.8 Variable-speed Fans ...............................................14
5.2 Advanced Features ..........................................................14
5.2.1Switching Power Supply ..........................................14
5.2.2 Mode Switch ..........................................................14
5.2.3 Bridge Mode Indicator ............................................14
5.2.4 Channel Level Control ............................................15
5.3 Options ............................................................................16
5.3.1 Control Modules ....................................................16
5.3.2 Input Sensitivity ......................................................16
6 Troubleshooting ............................................ 17
7 Specifications .............................................. 19
8 AC Power Draw and Thermal Dissipation .............. 23
9 Service ...................................................... 25
9.1. International and Canada Service ...................................25
9.2 US Service .......................................................................25
9.2.1 Service at a US Service Center ...............................25
9.2.2 Factory Service .......................................................25
9.2.3 Factory Service Shipping Instructions.....................25
9.2.4 Packing Instructions................................................25
9.2.5 Estimate Approval....................................................25
9.2.6 Payment of Non-Warranty Repairs...........................25
10 Warranty ................................................... 26
Crown Factory Service Information Form ....................................29
page 4
Operation Manual
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CTs Multi-Channel 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
*
•
Selectable constant-voltage (70V/100V) or
low-impedance (8/4 ohm) operation for
each channel pair.
•
•
Continuously-variable-speed fans opti-
mize cooling efficiency.
1 Welcome
1 Channel-Pair Driven
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz
560W
440W
250W
450W
420W
245W
Building on the foundation of the Com-Tech®
Series, Crown’s CTs Series offers new flexibility
and value for installed sound applications. The
Com-Tech Series were the first to offer inde-
pendent 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.
Three Year, No-Fault, Fully-Transferable
Warranty completely protects your invest-
ment and guarantees its specifications.
*
•
•
FIT (Fault Isolation Topology) circuitry
isolates faults within affected channels.
*
Constant Voltage full bandwidth power ratings support
100Hz - 20kHz due to automatic High-Pass Filters.
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
CTs 8200
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 addi-
tional information, please consult Crown’s
Amplifier Application Guide (available online at
your system installer or retailer.
Maximum Average Power
in watts with 0.1% THD.
•
•
Accepts new MC accessory modules that
tailor the amplifier to suit specific applica-
tions. Modules available for remote VCA
level control and IQ System® Control.
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.
Dual
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
Comprehensive array of indicators includ-
ing Power and Data, along with Bridge,
Ready, Signal, Clip, Thermal and Fault for
each channel, provide accurate diagnos-
tics.
*
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
In addition, CTs Series amplifiers include a
number of features which require some expla-
nation before they can be used to their maxi-
mum advantage.
*
We strongly recommend you read all instruc-
tions, warnings and cautions contained in this
manual. Also, for your protection, please send
in your warranty registration card today, or reg-
your bill of sale—it’s your official proof of pur-
chase.
•
•
Blue Power Indicator flashes if the ampli-
fier shuts off due to an under-/over-voltage
condition on the AC mains.
Bridge-Mono
Please take the time to study this manual so
that you can obtain the best possible service
from your amplifier.
4 Channel-Pairs Driven
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz
400W
320W
200W
350W
310W
185W
Advanced protection circuitry guards
against: shorted outputs, open circuits,
DC, mismatched loads, general overheat-
ing, under-/over-voltage, high-frequency
overloads and internal faults.
Proven Crown AB+B Multi-Mode® output
topology.
*
1.1 Features
1 Channel-Pair Driven
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz 20 Hz–20 kHz
•
New Crown® Switching Power Supply for
reduced weight.
540W
440W
250W
460W
440W
230W
*
•
•
High power-density, with eight channels in
a 3U chassis and four channels in a 2U
chassis.
*
Constant Voltage full bandwidth power ratings support
100Hz - 20kHz due to automatic High-Pass Filters.
Operation Manual
page 5
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CTs Multi-Channel Power Amplifiers
3 Setup
3.3 Ensure Proper Cooling
3.2 Install Your Amplifier
3.1 Unpack Your 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 transpor-
tation company immediately. Only you can ini-
tiate 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 ampli-
fier 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
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 6
Operation Manual
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CTs Multi-Channel Power Amplifiers
3 Setup
Figure 3.3 Balanced Input
Connector Wiring
3.4 Choose Input Wire
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 Appli-
cation Guide, available online at
assignments for commonly
used connector types.
When possible, use balanced wiring for signal input, which provides better
rejection of unwanted noise and hum. For more information, refer to the
NOTE: Custom wiring should only be performed by qualified per-
sonnel.
Figure 3.4 Unbalanced Input
Connector Wiring
3.5 Choose Output Wire 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 Fig-
ure 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 ter-
minal 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
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)
16 AWG
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.
Figure 3.5 Output Connector Wiring
(Typical of two channels)
CAUTION: Never use shielded cable for output wiring.
Operation Manual
page 7
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CTs Multi-Channel Power Amplifiers
3 Setup
See the Crown Amplifier Appli-
cation Guide, available online at
assignments for commonly
used connector types.
3.6 Wire Your 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 wir-
ing 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 con-
nector pin assignments.
CH 4
DUAL
CH 3
DUAL
BRIDGE
Figure 3.7 System Wiring and Control Settings, Dual Mode, 70V.
page 8
Operation Manual
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CTs Multi-Channel Power Amplifiers
3 Setup
See the Crown Amplifier Appli-
cation Guide, available online at
assignments for commonly
used connector types.
3.6.3 Bridge-Mono 16/8 Mode
BRIDGE
DUAL
CAUTION: Never change the position of
the Mode Switch while the amplifier
power is on. See Section 5.2.2 for more
information.
DUAL
CH 2
CH 1
Output panel
shown with
touch-proof
cover plate
removed.
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.
CH 4
DUAL
CH 3
DUAL
BRIDGE
INPUTS: Connect input wiring only to the lower-
(odd-) numbered channel pair.
OUTPUTS: Connect the speaker across the posi-
tive 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
CH 2
CH 1
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.
Output panel
shown with
touch-proof
cover plate
removed.
INPUTS: Connect input wiring only to the lower-
(odd-) numbered channel pair.
CH 4
DUAL
CH 3
DUAL
OUTPUTS: Connect the speaker across the posi-
tive 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.
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 9
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CTs Multi-Channel 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 connec-
tion by using an adapter or other methods.
3. Turn on the “Power” switch. The Power indica-
tor should glow.
4. Turn up the level of your audio source to an
optimum level.
Amplifiers don’t create energy. The AC mains volt-
age 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 pro-
vides voltage limits for all amplifier AC voltage con-
figurations. Also, the amplifier must be run within
the specified mains frequency requirements (indi-
cated on the amplifier’s back panel label). If you are
unsure of the output voltage of your AC mains,
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
please consult your electrician.
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 10
Operation Manual
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CTs Multi-Channel 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 fol-
lowing precautions for optimum performance and
safety:
5. Tampering with the circuitry, or making
unauthorized circuit changes may be hazard-
ous and invalidates all agency listings, and
may also void the product’s warranty.
1. Before use, your amplifier first must be con-
figured 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
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.
manual or, for advanced setup techniques,
consult Crown’s Amplifier Application Guide
2. Use care when making connections, select-
ing signal sources and controlling the out-
put level. The load you save may be your
own!
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 config-
uration may result in premature clipping,
speaker damage or a blown power fuse.
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 compo-
nents.
Operation Manual
page 11
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CTs Multi-Channel Power Amplifiers
4 Operation
F. Fault Indicator
C. Signal Indicator
4.2 Front Panel Controls
and Indicators
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 sig-
nal rises to a level typically considered as
the onset of audible clipping. The Clip
Indicator also will illuminate during Ther-
mal Level Control (TLC) or input overload.
Front-to-rear forced airflow.
Yellow LED, one per channel pair, illumi-
nates 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, indicat-
ing 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).
E. Thermal Indicator
I. Power Indicator
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.
Blue LED indicates amplifier has been
turned on and AC power is available. Indi-
cator also flashes if the amplifier shuts off
due to an under/over-voltage condition on
the AC mains.
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 12
Operation Manual
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CTs Multi-Channel Power Amplifiers
4 Operation
4.3 Back Panel Controls
and Connectors
M. Accessory Panel
CTs 4200: Accepts an optional IQ-MC4A or
VCA-MC4A module.
P. Mode Switch
Used on each consecutive pair of channels, this
four-position switch is used to select the ampli-
fier’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
Standard IEC type 320 inlet.
120V models: 15-amp.
220-240V models: 10-amp.
Voltage is indicated above IEC inlet.
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.
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 pre-
cise 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 chan-
nels 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 13
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CTs Multi-Channel 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 web-
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 pro-
tect, 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 con-
figurations. 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 out-
put voltage of your AC mains, consult your electrician.
5.1.1 Thermal Level Control (TLC)
If an amplifier channel starts to overheat, the TLC circuit
will engage that channel’s input compressor. By com-
pressing 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.
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.
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
100VAC
(CTs 8200 only)
Each consecutive pair of channels has one four-position
switch that selects the amplifier’s mode of operation. The
switch positions are:
90VAC
110VAC
5.1.2 Fault
120 VAC units
108VAC
198VAC
132VAC
264VAC
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.
•
•
Dual mode for 4 or 8 ohm operation.
220V/230V/
240V units
Dual mode for 70V constant-voltage opera-
tion.
Figure 5.1 AC Under-Voltage and
Over-Voltage Limits for Various Amplifier
Models
5.1.3 Fault Isolation Topology (FIT)
•
•
Bridge-Mono mode for 8 or 16 ohm opera-
tion.
Crown’s new FIT (Fault Isolation Topology) design iso-
lates 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
A fuse protects the amplifier from excessive AC current
draw.
Be sure to turn off the amplifier before changing
the Mode-switch setting.
5.1.7 Inrush Limiting
5.2.3 Bridge Mode Indicator
A soft-start circuit in the power supply minimizes the
amplifier’s current draw during power-on.
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.
5.1.8 Variable-speed Fans
Continuously variable speed fans direct the airflow
through the amplifier for cooling.
page 14
Operation Manual
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CTs Multi-Channel Power Amplifiers
5 Advanced Features
and Options
5.2.4 Channel Level Control
ATTENUATION in dB
The signal level for each input can be attenu-
ated 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
4/8 Ohm
70V
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
-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
1
Note: Attenuation per detent varies with operat-
ing 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
Operation Manual
page 15
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CTs Multi-Channel Power Amplifiers
5 Advanced Features
and Options
5.3 Options
Wall-Mount level control panels for use with
VCA module:
Choosing the Right 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
dio.com.
1-VCAP: See Figure 5.5. Used in conjunction with
a VCA-MC module, this is a single-gang panel pro-
viding 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
IQ-MC (IQ Module): See Figure 5.3. A single IQ-
MC module provides IQ control and monitoring
capability to all channels of the amplifier. Features
include basic IQ amplifier control and monitoring,
including attenuation, mute, polarity, input level,
output level, power supply temperature, and thermal
level meters. Advanced features include IOC, Ther-
mal and Fault error reporting, Load Supervision,
output limiting, Listen Bus, AUX control port,10
presets, and real-time “read-only” software indica-
tion of amplifier hardware indicator, level control,
and mode switch status.
MC MODULE
VCA MODULE
4-VCAP: See Figure 5.6 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 con-
nector on the VCA-MC.
CTs 4200
CTs 4200A
CTs 8200
CTs 8200A
IQ-MC4
IQ-MC4A
IQ-MC8
IQ-MC8
VCA-MC4
VCA-MC4A
VCA-MC8
VCA-MC8
Figure 5.5 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 an IQ-MC or
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.
1-VCAP: Single-gang wall-mount panel with
one VCA channel volume control (for any CTs
model)
VCA-MC (VCA module): See Figure 5.4. Pro-
vides 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 chan-
nels. Thus, 4-channel amplifiers use two connec-
tors; 8-channel amplifiers use four connectors.
4-VCAP: Two-gang wall-mount panel with
four VCA channel volume controls (for any CTs
model)
5.3.2 Input Sensitivity
The CTs 4200 and CTs 8200 have a fixed input sen-
sitivity of 1.4V. A service option is available for
other input sensitivities.
Figure 5.6 4-VCAP Module
Figure 5.3 IQ-MC8 Module
Figure 5.4 VCA-MC8 Module
page 16
Operation Manual
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CTs Multi-Channel Power Amplifiers
6 Troubleshooting
CONDITION: Power indicator is off.
CONDITION: Fault indicator is on.
POSSIBLE REASON
POSSIBLE REASON:
•
•
•
The amplifier has lost AC power.
The amplifier’s Power switch is off.
•
The amplifier channel has stopped oper-
ating. Return 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 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 sig-
nal, 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 lev-
els of the mixer or preamp.
Refer to section 5.1.6 for specific voltage
requirements.
Operation Manual
page 17
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CTs Multi-Channel 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 18
Operation Manual
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CTs Multi-Channel 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
25 Ohm) at 0.1% THD
70V (
Power Chart
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
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
Figure 7.2
CTs 8200
70V (25 Ohm) at 0.1% THD
Power Chart
Bridge-Mono Mode
Channel Pairs Driven
4
2
1
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 19
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CTs Multi-Channel 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
0.5 dB
Frequency Response (at 1 watt, 20 Hz - 20 kHz)
Phase Response (at 1 watt, 10 Hz - 20 kHz)
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 20
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CTs Multi-Channel Power Amplifiers
7 Specifications
Figure 7.3 CTs 8200 Typical Frequency Response (1 W)
Figure 7.4 CTs 8200 Typical Phase Response (1 W)
Figure 7.5 CTs 8200 Typical Damping Factor vs. Frequency
Operation Manual
page 21
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CTs Multi-Channel Power Amplifiers
7 Specifications
Figure 7.6 CTs 8200 Typical Output Impedance vs. Frequency
Figure 7.7 CTs 8200 Typical Crosstalk vs. Frequency
page 22
Operation Manual
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CTs Multi-Channel 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 23
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CTs Multi-Channel 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 24
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CTs Multi-Channel Power Amplifiers
9 Service
Crown amplifiers are quality units that rarely require ser-
vicing. Before returning your unit for service, please con-
tact Crown Technical Support to verify the need for
servicing.
9.2.4 Packing Instructions
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.
9.2.2 Factory Service
Important: These instructions must be followed. If they
are not followed, Crown Audio, Inc. assumes no respon-
sibility 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 ser-
viceable 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:
1. Fill out and include the Crown Audio Factory Ser-
vice 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.
CAUTION: To prevent electric shock, do not
remove covers. No user serviceable parts
inside. Refer servicing to a qualified technician.
A Service Return Authorization (SRA) is required for
product being sent to the factory for repair. An SRA can
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, hard-
ware, etc.) with your unit. These items are not
needed to service your product. We will not be
responsibility for these items.
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.
9.2.5 Estimate Approval
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
Approval of estimate must be given within 90 days after
being notified by Crown Audio Inc. Units still in the pos-
session of Crown after 90 days of the estimate will
become the property of Crown Audio Inc.
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 send-
ing 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.
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.)
9.2.6 Payment of Non-Warranty Repairs
9.1 International and Canada Service
Payment on out-of-waranty repairs must be received
within 90 days of the repair date. Units unclaimed after
90 days become the property of Crown Audio Inc.
Service may be obtained from an authorized service cen-
ter. (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.
4. If you provide your own shipping pack, the mini-
mum 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.
1. Service Return Authorization (SRA) is required for
product being sent to the factory for service. Please
complete the SRA by going to
Crown Factory Service
1718 W. Mishawaka Rd.,
Elkhart, Indiana 46517 U.S.A.
Remember to transport your unit in the original factory
pack.
do not have access to our website, call
1.800.342.6939, extension 8205 and we'll create the
SRA for you.
Telephone:
574.294.8200
800.342.6939 (North America,
Puerto Rico, and Virgin Islands only)
b. Securely seal the package with an adequate carton
sealing tape.
9.2 US Service
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 war-
ranty.
2. See packing instructions that follow.
Facsimile:
574.294.8301 (Technical Support)
574.294.8124 (Factory Service)
3. Ship product to:
Using your 'foam-in-place' shipping pack
CROWN AUDIO FACTORY SERVICE
1718 W MISHAWKA RD.
ELKHART, IN 46517
9.2.1 Service at a US Service Center
Note: The foam-in-place packing is molded so that there
is only one correct position for your product.
Internet:
This method usually saves the most time and effort. Sim-
ply 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. Remem-
ber to transport the unit in the original factory pack. A list
of authorized service centers in your area can be obtained
from Crown Factory Service, or online from
4. Use a bold black marker and write the SRA number
on three sides of the box.
1. Open carton and lift center cushion leaving both
end-cushions in place.
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.
Operation Manual
page 25
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CTs Multi-Channel Power Amplifiers
10 Warranty
UNITED STATES & CANADA
SUMMARY OF WARRANTY
est, insurance, closing costs, and other finance
charges less a reasonable depreciation on the
product from the date of original purchase. War-
ranty work can only be performed at our autho-
rized 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 defec-
tive 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 for-
eign country and the port of entry in the United
States including the return shipment, and all
taxes, duties, and other customs fees for such for-
eign shipments.)
FROM ANY DEFECT IN THE NEW CROWN
PRODUCT. THIS INCLUDES ANY DAMAGE TO
ANOTHER PRODUCT OR PRODUCTS RESULT-
ING FROM SUCH A DEFECT. SOME STATES DO
NOT ALLOW THE EXCLUSION OR LIMITATIONS
OF INCIDENTAL OR CONSEQUENTIAL DAM-
AGES, SO THE ABOVE LIMITATION OR EXCLU-
SION 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 SUB-
SEQUENT 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 War-
ranty.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or
modify this Crown Warranty. This Crown War-
ranty 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.
ITEMS EXCLUDED FROM THIS
CROWN WARRANTY
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 inten-
tional 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
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.
You must notify us of your need for warranty ser-
vice within the warranty period. All 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 reason-
able 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 autho-
rized service center immediately.
LEGAL REMEDIES OF PURCHASER
WHAT THE WARRANTOR WILL DO
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.
We will remedy any defect, regardless of the rea-
son for failure (except as excluded), by repair,
replacement, or refund. We may not elect refund
unless you agree, or unless we are unable to pro-
vide 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 inter-
DISCLAIMER OF CONSEQUENTIAL
AND INCIDENTAL DAMAGES
THIS STATEMENT OF WARRANTY SUPERSEDES
ANY OTHERS CONTAINED IN THIS MANUAL
YOU ARE NOT ENTITLED TO RECOVER FROM
US ANY INCIDENTAL DAMAGES RESULTING
FOR CROWN PRODUCTS.
12/01
page 26
Operation Manual
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CTs Multi-Channel Power Amplifiers
10 Warranty
WORLDWIDE EXCEPT USA & CANADA
SUMMARY OF WARRANTY
unless you agree, or unless we are unable to pro-
vide 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 inter-
est, insurance, closing costs, and other finance
charges less a reasonable depreciation on the
product from the date of original purchase. War-
ranty work can only be performed at our autho-
rized service centers. We will remedy the defect
and ship the product from the service center
within a reasonable time after receipt of the defec-
tive product at our authorized service center.
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 SUB-
SEQUENT OWNER of each NEW Crown1 product,
for a period of three (3) years from the date of pur-
chase 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.
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.
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
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 cen-
ter are not satisfactory, notify our authorized ser-
vice center immediately.
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 inten-
tional 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.
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.
LEGAL REMEDIES OF PURCHASER
No action to enforce this Crown Warranty shall be
commenced after expiration of the warranty
period.
WHAT THE WARRANTOR WILL DO
We will remedy any defect, regardless of the rea-
son for failure (except as excluded), by repair,
replacement, or refund. We may not elect refund
THIS STATEMENT OF WARRANTY SUPERSEDES
ANY OTHERS CONTAINED IN THIS MANUAL FOR
CROWN PRODUCTS.
7/01
Operation Manual
page 27
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CTs Multi-Channel Power Amplifiers
NOTES
page 28
Operation Manual
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CTs Multi-Channel Power Amplifiers
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: __________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
Operation Manual
page 29
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CTs Multi-Channel Power Amplifiers
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Operation Manual
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Operation Manual
page 31
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