®
C O M - T E C H
S E R I E S
CT-210
esigned from the ground up exclusively
for the professional sound contractor,
Com-Tech® offers incredible features,
Features
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IOC® (Input/Output Comparator) circuitry im-
mediately alerts of any distortion exceeding
0.05%, providing dynamic proof of distortion-
free performance.
D
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Unique power supply allows channels to be
independently operated in either 70-V or 8/4-
ohm mode.
flexibility, and the best long-term value in
commercial audio today.
The Com-Tech 10 Series amps offer the same
features and performance of the original
Com-Techs while delivering upgraded fea-
tures to help make your job easier.
Enhanced PIP2™ (Programmable Input Pro-
cessor) connector accepts new accessory
modules that tailor the amplifier to suit spe-
cific applications.
Remote feature allows amplifier to be turned
on and off from a remote location by adding
an optional R.S.V.P. accessory.
Crown’s Grounded Bridge™ design delivers
large voltage swings without using easily
stressed output-transistor configurations like
conventional amplifiers. The results are
lower distortion and superior reliability.
In a profession where unplanned service
calls quickly wipe out profits, Com-Tech 10
Series is designed to be the most reliable
amplifier you can install.
Full protection from shorted, open and mis-
matched loads; general overheating; DC;
high-frequency overloads; and full protection
from internal fault are provided by our latest
protection scheme: “Quad-Mute.”
For more details about the Crown Com-Tech
10 Series, contact the Crown Technical
Support Group at 800-342-6939 or 219-294-
8200. Also, visit the Crown Audio website at
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Patented ODEP® (Output Device Emulation
Protection) circuitry compensates for over-
heating and overload to keep the amplifier
working when others would fail.
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Three Year No-Fault Full Warranty completely
protects your investment and guarantees its
specifications.
38:1 12% or 32 dB 1 dB gain at 0.775-volts
(8/4- ohm) volt sensitivity;
Controls
Specifications
Enable: A front-panel three-position switch
used to select local, off or remote.
The following applies to 120-VAC, 60-Hz units in Stereo
mode with 8-ohm loads and an input sensitivity of 26 dB
gain unless otherwise specified. Specifications for units
supplied outside the U.S.A. may vary slightly at different AC
voltages and frequencies.
Voltage Gain to 1 kHz, 70V rated output,
Level: A 21-position detented back-panel
rotary potentiometer for each channel used to
control the input level.
90:1 12% or 39 dB 1 dB gain at 0.775-volts
(70-V) sensitivity.
Required AC Mains: 50/60-Hz; 100-, 120-,
220-, 240- VAC ( 10%) units are available.
North American units are 60 Hz, 120 VAC only.
Power
Output Power
Sensitivity: A three-position switch located
inside the PIP2 compartment used to select
input sensitivity: 0.775 volts in 8/4-ohm mode
or 0.775 volts in 70-volt mode for full rated
output, or a 26-dB voltage gain.
20 Hz–20 kHz
Power
*1 kHz **
Power
AC Line Current:
CT-210
Current, voltage and frequency requirements
are provided on the unit’s back panel.
At Idle: All units draw 35 watts or less when
idle (in energy-saving mode).
4-ohm Dual (per ch.)
150W
135W
105W
105W
270W
Dual/Mono: A three-position back-panel
switch used to select Stereo, Bridge-Mono or
Parallel-Mono mode.
8-ohm Dual (per ch.) 110W
110W
8-ohm Bridge-Mono 300W
70-V Dual (per ch.)
AC Line Connector: NEMA 5-15P plug is
provided on 120 VAC, 60 Hz North American
units. Plug illuminates when unit is powered.
Reset: A back-panel push button used to reset
the circuit breaker that protects the power
supplies.
70-V Parallel-Mono
140-V Bridge-Mono
210W
205W
Performance
Frequency Response: 0.1 dB from 20 Hz to
200W
Indicators
Enable: An amber front-panel LED that shows
the on/off status of the low-voltage power
supply.
20 kHz at 1 watt.
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
Phase Response: 10 degrees from 10 Hz to
20 kHz at 1 watt.
**20 Hz–20 kHz Power: refers to maximum average power
in watts from 20 Hz to 20 kHz with 0.1% THD.
Signal: A green front-panel LED for each
channel that flashes to show amplifier output.
Signal-to-Noise Ratio, A-weighted:
Better than 105 dB below rated 1 kHz power.
Load Impedance: Safe with all types of loads.
With 8/4-ohm output, all Com-Techs are rated
for 4 to 8 ohms in Dual mode, 8 to 16-ohms in
Bridge-Mono mode, and 2 to 4 ohms in
Parallel-Mono mode. With 70-volt output,
rated loads vary among the different models
for each dual/mono mode.
IOC: An amber front-panel LED for each
channel that flashes to show distortion if a
channel’s output waveform differs from its
input by 0.05% or more.
Total Harmonic Distortion (THD): 1 kHz rated
power, 0.05% or less true THD.
Intermodulation Distortion (IMD): (60 Hz and
7 kHz at 4:1) Less than 0.05% from rated
power to 35 dB below rated power at 8 ohms.
ODEP: A green front-panel LED for each
channel that shows thermal-dynamic energy
reserve. Normally, each ODEP indicator is lit to
show available reserve energy. In the rare
event that a channel has no reserve, its
indicator will dim in proportion to ODEP
limiting.
Damping Factor: Greater than 1,000 from 10
Hz to 400 Hz.
Voltage Gain to 1 kHz, 8-ohm rated output:
20:1 3% or 26 dB 0.25-dB gain at the
maximum level setting.
Controlled Slew Rate: (Slew rates are limited
to useful levels for ultrasonic/RF protection.)
Greater than 17 volts per microsecond.
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