Crown Audio Stereo Amplifier CTs Series User Manual

C T s S E R I E S  
CTs Series  
Multi-channel  
uilding on the foundation of the Com-Tech®  
Series, Crown’s CTs Series offers new flex-  
Bibility and value for installed sound applica-  
tions. 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.  
For added flexibility, the CTs Series includes both  
dual-channel and multi-channel models.  
Comprehensive array of indicators including  
Power and Data, along with Bridge, Ready,  
Signal, Clip, Thermal and Fault for each chan-  
nel, provide accurate diagnostics.  
Features  
New Crown Switching Power Supply for  
reduced weight.  
High power-density, with four channels (CTs  
4200) or eight channels (CTs 8200) in a 3U  
chassis.  
Blue Power Indicator flashes if the amplifier  
shuts off due to an under/over voltage condition  
on the AC mains.  
Selectable constant-voltage (70V/100V) or  
low-impedance (4/8 ohm) operation for each  
channel pair. (Channel pair must be operated  
in Bridge mode for 100V output).  
Advanced protection circuitry guards against:  
shorted outputs, open circuits, DC, mismatched  
loads, general overheating, under-/over-volt-  
age, high-frequency overloads and internal  
faults.  
Proven Crown AB+B Multi-Mode® output topol-  
ogy.  
All models in the CTs Series feature Crown’s new  
Switching Power Supply for lighter weight, and all  
models are also compatible with the IQ System®.  
Multi-channel models accept new MC accessory  
modules that provide enhanced control, monitor-  
ing, and system integration.  
FIT (Fault Isolation Topology) circuitry isolates  
faults within affected channels.  
TLC protection circuitry protects the amplifier  
from excessive heat by subtly and dynamically  
reducing the gain only when necessary to  
reduce heat levels.  
The CTs multi-channel amps feature FIT (Fault Iso-  
lation Topology), which 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.  
Continuously-variable fans optimize cooling effi-  
ciency.  
Three Year, No-Fault, Fully Transferable  
Warranty completely protects your investment  
and guarantees its specifications.  
Accepts new MC accessory modules that tailor  
the amplifier to suit specific applications. Mod-  
ules available for remote VCA level control and  
IQ System® Control.  
In a profession where unplanned service calls  
quickly wipe out profits, the CTs Series amplifiers  
are designed to be the most reliable amplifiers you  
can install.  
Crown’s advance-replacement Profit Protec-  
tion Plan provides quick, no-questions-asked  
replacement of covered amps should they fail  
at any time up to 6 months following date of  
installation.  
35-Hz High-Pass Filter is automatically  
inserted when the channel pair is set for con-  
stant-voltage operation (corner frequency may  
be changed as a service option).  
For more details about the Crown® CTs Series,  
contact Crown Customer Service at 800-342-6939  
or 574-294-8200. Also, visit the Crown Audio web-  
20 Hz to 20 kHz: < 0.05%.  
Input Impedance (nominal): 20 kilohms balanced,  
10 kilohms unbalanced.  
Intermodulation Distortion (IMD) 60 Hz and 7  
kHz at 4:1, from 163 milliwatts to full bandwidth  
power: < 0.05% (typical).  
Specifications  
Minimum Guaranteed Power: See power charts  
below.  
Maximum Input Level (before input compres-  
sion): + 20 dBu.  
Damping Factor: 10 Hz to 400 Hz: >180.  
Load Impedance (Note: Safe with all types of  
loads):  
Frequency Response (at 1 watt, 20 Hz - 20 kHz):  
0.5 dB.  
Crosstalk (below rated power, 20 Hz to 1 kHz):  
> 80 dB.  
Stereo: 4/8 and 25 ohms (70V)  
Bridge Mono: 8/16 and 50 ohms (100V)  
Phase Response (at 1 watt, 10 Hz - 20 kHz): 35°.  
Common Mode Rejection (CMR) (20 Hz to 1 kHz):  
> 50 dB.  
Signal to Noise Ratio below rated power (20 Hz to  
20 kHz): 100 dB unweighted.  
Voltage Gain (at maximum level setting), 1.4V  
sensitivity,  
DC Output Offset (Shorted input): < 5 mV.  
Total Harmonic Distortion (THD) at 1 watt, from  
4/8 Ohm Operation: 20:1 (26 dB);  
70V Operation: 50:1 (34 dB)  
100V Operation: 71.4:1 (37 dB)  
CTs 4200  
CTs 8200  
Maximum Average Power  
Maximum Average Power  
Required AC Mains: 120V 60 Hz, 220/230/  
240V/50 Hz.  
in watts with 0.1% THD.  
in watts with 0.1% THD.  
Dual  
Dual  
4 Channels Driven  
4-ohm (per ch.)  
8-ohm (per ch.)  
70V (per ch.)  
1 kHz 20 Hz–20 kHz  
8 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  
200W  
160W  
200W  
175W  
155W  
185W  
Power Draw at Idle (120VAC mains, all channels  
in 4/8 ohm mode): 58W.  
*
*
Power Draw at Idle (120VAC mains, all channels  
in 70V mode): 77W.  
1 Channel Driven  
4-ohm (per ch.)  
8-ohm (per ch.)  
70V (per ch.)  
1 kHz 20 Hz–20 kHz  
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  
270W  
220W  
250W  
230W  
220W  
230W  
*
*
Cooling: Continuously variable speed forced air,  
front-to-back airflow.  
Bridge-Mono  
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  
4 Channel-Pairs Driven  
8-ohm (per ch. pair)  
16-ohm (per ch. pair)  
100V (per ch. pair)  
1 kHz 20 Hz–20 kHz  
Dimensions (Width, Height, Depth):  
520W  
400W  
220W  
430W  
380W  
220W  
400W  
320W  
200W  
350W  
310W  
185W  
CTs 4200: 19 in. (48.3 cm) W x 3.5 in. (8.9 cm)  
H x 16.25 in. (41.3 cm) D.  
*
*
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 Channel-Pair Driven  
8-ohm (per ch. pair)  
16-ohm (per ch. pair)  
100V (per ch. pair)  
1 kHz 20 Hz–20 kHz  
CTs 8200: 19 in. (48.3 cm) W x 5.25 in. (13.3  
cm) H x 16.25 in. (41.3 cm) D.  
560W  
440W  
250W  
450W  
420W  
245W  
540W  
440W  
250W  
460W  
440W  
230W  
*
*
*
*
Constant Voltage full bandwidth power ratings support  
100Hz - 20kHz due to automatic High-Pass Filters.  
Constant Voltage full bandwidth power ratings support  
100Hz - 20kHz due to automatic High-Pass Filters.  
 

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