Specifications

INSTALLED SOUND
• 7
`SPECIFICATIONS
Performance
Frequency Response (at 1 watt) 20 Hz to 20 kHz:
±0.5 dB.
Phase Response (at 1 watt): 10 Hz to 20 kHz: ±35°.
Signal-to-Noise Ratio, unweighted, below rated
power (20 Hz to 20 kHz): 100 dB.
Total Harmonic Distortion (THD) at full rated
power, from 20 Hz to 20 kHz: < 0.1%.
Intermodulation Distortion (IMD) 60 Hz and 7 kHz
at 4:1, from 163 milliwatts to full bandwidth power:
< 0.05% (typical).
Damping Factor, 10 Hz to 400 Hz: > 180.
Crosstalk (below rated power, 20 Hz to 1 kHz):
> 80 dB.
Voltage Gain (at maximum level setting)
1.4V sensitivity:
8/4-ohm operation: 20:1 (26 dB).
70V operation: 50:1 (34 dB).
100V operation: 71.4:1 (37 dB).
Common Mode Rejection (CMR) (20 Hz to 1 kHz,
(typical): > 50 dB.
DC Output Offset (Shorted input): < ±5 mV.
Maximum Input Level before input compression:
+ 20 dBu.
Power
Load Impedance: Safe with all types of loads.
Stereo: 4/8 and 25 ohms (70V) .
Mono: 8/16 and 50 ohms (100V).
Required AC Mains: 120VAC, 60 Hz and
220/230/240VAC, 50 Hz.
Power Draw at Idle (120VAC mains, all channels
in 4/8 ohm mode): 58W.
Controls and Indicators
Front Panel Indicators: Bridge Mode, Ready,
Signal, Clip, Thermal, Fault, Data, Power.
Back Panel Controls and Connectors: Power
Cord Connector: IEC.
Reset Switch: Resets the power circuit breaker.
Channel Level Controls: 21-position detented,
one per channel.
C
rown’s CTs Multi-channel Series offers wide flexibility for a wide range of
installed sound applications. CTs Multi-channel Series amplifiers offer
independent selection of high-and low-impedance operation for each channel
pair, making these amps ideal for multi-zone installations. New Crown MC
accessory modules provide enhanced control, monitoring, and system inte-
gration, including IQ System compatibility.
Level Attenuation: Minus infinity (–70 dB)
to 0 dB gain.
35-Hz High-Pass Filter: A fixed 35-Hz highpass
filter per channel pair is automatically inserted
when the mode switch is set to either of the con-
stant-voltage settings. The high-pass filter corner
frequency can be set to 70 Hz, or bypassed, with
a service option.
Mode Switch: 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.
Input/Output
Input Connectors: Removable Phoenix
TM
-style
barrier connectors for balanced input.
Input Impedance (nominal): 20 k ohms balanced,
10 k ohms unbalanced.
Output Connectors: One four-pole touch-proof
terminal strip for every two channels, with touch-
proof cover. Accepts up to 10 AWG terminal forks.
Protection
CTs Multi-channel Series amplifiers provide
extensive protection and diagnostic capabilities,
including Thermal Level Control (TLC), fault, FIT
protected circuitry, AC under/over voltage protec-
tion, power fuse, and inrush limiting.
Construction
Ventilation: Front-to-rear forced airflow.
Continuously variable speed fans (four in the CTs
8200, one in the CTs 4200) direct the airflow
through the amplifier for cooling.
Dimensions
CTs 4200: EIA Standard 19-inch (48.3-cm) rack
mount width (EIA RS-310-B), 3.5-inch (8.9-cm)
height and 16.25-inch (41.3-cm) depth behind the
mounting surface.
CTs 8200: EIA Standard 19-inch (48.3-cm) rack
mount width (EIA RS-310-B), 5.25-inch (13.3-cm)
height and 16.25-inch (41.3-cm) depth behind the
mounting surface.
Weight
Net Weight
CTs 4200: 27 lb 8 oz (12.5 kg);
CTs 8200: 36 lb 6 oz (16.5 kg).
Shipping Weight
CTs 4200: 32 lb (14.5 kg).
CTs 8200: 47 lbs. (21.3 kg).
System Solutions
IQ-MC4A: IQ module for CTs 4200A;
IQ-MC4: IQ module for CTs 4200;
IQ-MC8: IQ module for CTs 8200.
VCA-MC4A: VCA module for CTs 4200A;
VCA-MC4: VCA module for CTs 4200;
VCA-MC8: VCA module for CTs 8200.
IQ modules allow remote monitoring and control.
VCA modules allow remote volume control.
Accessories
Wall-mount level control panels for use with
VCA module,
1-VCAP: 1-gang panel with 1 VCA channel
volume control.
4-VCAP: 2-gang panel with 4 VCA channel
volume controls.
T-170V: This is an autoformer that allows 100V
output from the CTs 8200, and allows other ampli-
fiers without direct constant voltage output to be
easily integrated into distributed systems.
TP-170V: This is a rack-mountable panel with four
autoformers as described above.
Regulatory Certifications
Other Applications