Frequency Response; Damping Factor:; Input Impedance (nominal):- Page 5

INSTALLED SOUND



SPECIFICATIONS

Frequency Response

 (at 1 watt, 20 Hz - 20 

kHz): ±0.25 dB.

Signal to Noise Ratio below rated power (20 

Hz to 20 kHz):

 105 dB A-weighted.

Total Harmonic Distortion (THD) at  full rated 

power, from 20 Hz to 20 kHz:

 CTs 600/1200: 

< 0.1%. CTs 2000/3000 < 0.35%.

Damping Factor:

 10 Hz to 100 Hz: > 3000.

Crosstalk (below rated power,  20 Hz to 1 kHz): 

> 80 dB.

Common Mode Rejection (CMR) (20 Hz to 1 

kHz): 

50 dB.

DC Output Offset

:

< ±2 mV.

Input Impedance (nominal):

 10 kilohms bal-

anced, 5 kilohms unbalanced.

Maximum Input Level: 

+20 dBu before input 

compression, +32 dBu absolute maximum.

Load Impedance:

 (Note: Safe with all types of 

loads)

CTs 600/1200 

     Stereo: 2/4/8/16 ohms, 70V, 100V 

     Bridge Mono: 4/8/16 ohms, 140V.
CTs 2000/3000 

     Stereo: 2/4/8/16 ohms, 70V, 100V 

     Bridge Mono: 4/8/16 ohms, 140V, 200V.

Voltage Gain (at maximum level setting):

8/4 ohm operation, 1.4V sensitivity 

     CTs 600     35:1 (31 dB) 

     CTs 1200   50:1 (34 dB) 

     CTs 2000   63.9:1 (36 dB) 

     CTs 3000    71.4:1 (37 dB). 
26 dB: 20:1 (26 dB).
70V operation, 1.4V sensitivity or 100V 

operation, 2.0V sensitivity: 50:1 (34 dB).

AC Line Voltage and Frequency Configurations 

Available

 (±10%):

120VAC/60Hz, 230VAC/50 Hz.

Power Draw at Idle (120VAC mains):

     CTs 600/1200: 24W (standby mode) 

     CTs 2000/3000: 35W (standby mode).

Cooling: 

Continuously variable speed forced air, 

front-to-back airflow.

Dimensions:

 19 in. (48.3 cm) W x 3.5 in. (8.9 

cm) H x 14.25 in. (36.2 cm) D.

Weight: 

Net, Shipping

CTs 600: 22.8 lb (10.3 kg), 27.7 lb (12.6 kg) 

CTs 1200: 23.4 lb (10.6 kg), 28.3 lb (12.8 kg) 

CTs 2000: 27.0 lb (12.2 kg), 32.0 lb (14.5 kg) 

CTs 3000: 27.7 lb (12.6 kg), 32.7 lb (14.8 kg).

Front Panel Controls and Indicators

Bridge Mode Indicator:

 Yellow LED illuminates 

when the rear-panel Mode Switch is set to the 

“Bridge” position.

Ready Indicator:

 Green LED, one per channel, 

illuminates when the channel is initialized and 

ready to produce audio output. Indicator is off 

when PIP puts the amplifier in standby mode via 

the control system.

Signal Indicators:

 Three green LEDs per chan-

nel indicate the amplifier’s input and output 

signal levels.
Signal: input signal is above –40 dBu. 

–20 dB: amplifier output is 20 dB below clipping. 

–10 dB: amplifier output is 10 dB below clipping.

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.

Thermal Indicator:

 Red LED, one per channel, 

illuminates when the channel has shut down, 

or is very near shutting down, due to thermal 

stress or overload.

Fault Indicator:

 Red LED, one per channel, 

flashes when the amplifier output channel has 

stopped operating. 

Data Indicator:

 Yellow LED indicates control 

data activity (if the amplifier is equipped with 

an IQ-PIP2 module, and connected to a control 

system).

Power Indicator:

 Blue LED indicates amplifier 

has been turned on and AC power is available. 

The LED will flash when the AC line voltage is 

15% above or 25% below the nominal rated 

value.

Cooling Vents: 

Front-to-rear forced airflow.

Power Switch:

 Push-on / push-off switch.

Back Panel Controls and Connectors

Power Cord Connector:

 Standard 15 amp IEC 

inlet. Voltage is indicated above IEC inlet.

Reset Switch:

 Resets the circuit breaker that 

protects the power supply.

Speaker Connectors:

 One four-pole touch-proof 

terminal strip. Accepts up to 10 AWG terminal 

forks. 

Input Connectors:

 Balanced 2-pin terminal block 

connector, one per channel, on the standard 

PIP2-BBY module. 

Channel Level Control:

 One 21-position 

detented rotary attenuator per channel, ranging 

from minus infinity (–70 dB) to 0 dB gain.

Mode Switch:

 Two-position switch is used to 

select the amplifier’s mode of operation: Dual or 

Bridge-Mono.

Highpass Filter:

 One 3-position switch per 

channel selects between OFF, 35Hz and 70Hz  

3rd-order filters.

“Y” Input Switch:

 When set to ON, this switch 

parallels the input signals of the two channels 

for use when the input signal is mono. Also can 

be used to daisy-chain the signal to another 

amplifier.

Ventilation Grille:

 Front-to-rear forced airflow.

Options

PIP2 modules, including the PIP-Lite, PIP-USP3, 

and PIP-USP3/CN.

Protection Systems

Thermal Level Control (TLC):

 If an amplifier 

channel starts to overheat, the TLC circuit 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. 

Junction Temperature Simulation (JTS): 

In the 

CTs 600/1200, if excess power is demanded, 

JTS circuitry limits the drive level of the output 

devices to a safe range, preventing damage.

Fault:

 The amplifier will light the Fault LED if the 

amplifier output stage stops operating.

AC Under-/Over-Voltage Protection: 

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 ampli-

fier will turn back on when the AC line voltage 

returns to safe operating levels.

Circuit Breaker:

 This breaker protects the ampli-

fier from excessive AC current draw.

DC Output Servo:

 The output servo circuit 

protects your drivers by eliminating DC offset, 

even in the presence of very large asymmetrical 

signals.

In-rush Limiting:

 A soft-start circuit in the 

power supply minimizes the amplifier’s current 

draw during power-on.

Variable-speed Fan:

 Two continuously variable 

speed fans direct the airflow through the ampli-

fier for cooling.

Regulatory Certifications

Other Applications

C

rown’s  CTs  Series  amplifiers  provide  exceptional  performance,  flexibility  and  value  for  installed 

sound applications. CTs Series amplifiers feature independent selection of high and low impedance 

operation for a specific channel, plus power levels and features that were carefully chosen to match 

the requirements of fixed install design. Easy integration with HiQnet™  and CobraNet™  allows CTs 

amplifiers to deliver a comprehensive lineup of monitoring and control features along with digital audio 

transport for an award-winning digital audio solution.

                                                                                                    POWER OUTPUT*

    2-ohm Dual      4-ohm Dual     8-ohm Dual    16-ohm Dual    70V Dual      100V Dual         4-ohm               8-ohm          16-ohm           100V              140V             200V 

Models             (per channel)    (per channel)   (per channel)   (per channel)  (per channel)  (per channel)       Bridge               Bridge           Bridge            Bridge             Bridge          Bridge

CTs 600        150W

  300W     300W     300W      300W     300W

‡

 300W  

   600W     600W     600W

‡

 600W    

600W

‡

CTs 1200      250W

 600W     600W     300W      600W     600W

‡

 500W 

1,200W  1,200W  1,200W

‡

 1,200W 

1,200W

‡

CTs 2000   1,000W   1,000W  1,000W     625W   1,000W  1,000W   2,000W     2,000W  2,000W  2,000W    2,000W  2,000W

CTs 3000   1,500W   1,500W  1,250W     625W   1,500W  1,500W   3,000W     3,000W  2,500W  3,000W    3,000W  3,000W

*Maximum average power in watts at rated THD, 20 Hz - 20 kHz.                 ‡With T-170V or TP-170V. 

9/07                                                             136317-2B