Crown Audio CTs Series Front Panel Controls and Indicators, Back Panel Controls and Connectors

Models: CTs Series

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Front Panel Controls and Indicators

Weight (Net, Shipping):

CTs 4200: 27 lb 8 oz (12.5 kg), 32 lb (14.5 kg)

CTs 8200: 36 lb 6 oz (16.5 kg), 47 lb (21.3 kg).

Front Panel Controls and Indicators

Bridge Mode Indicator: Yellow LED, one per chan- nel pair, illuminates 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, indicating that the amplifier must be powered off and on to reset the Mode.

Ready Indicator: Green LED, one per channel, illu- minates when the channel is initialized and ready to produce audio output.

Signal Indicator: Green LED, one per channel, illu- minates to indicate the presence of input signals above –40 dBu.

Clip Indicator: Red LED, one per channel, illumi- nates when the THD of the channel’s output signal rises to a level typically considered as the onset of audible clipping. The Clip Indicator also will illuminate during Thermal Level Control (TLC) or input overload.

Thermal Indicator: Red LED, one per channel, flashes when a state of thermal stress or overload has caused the channel to shut down. If the power supply goes into thermal overload, all channel LEDs will flash.

Fault Indicator: Red LED, one per channel, flashes when a fault condition has occurred in the channel.

Ventilation Grille: Front-to-rear forced airflow.

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).

Power Indicator: Blue LED indicates amplifier has been turned on and AC power is available. Indica- tor also flashes if the amplifier shuts off due to an under-/over-voltage condition on the AC mains.

Power Switch: Amplifier is on when the switch is in the IN position.

Back Panel Controls and Connectors

AC Power Cord Connector: IEC inlet, type 320;

100/120VAC units: 15A;

220/230/240VAC units: 10A. Voltage is indicated above IEC inlet.

Output Connectors: One four-pole terminal strip for every two channels with touch-proof cover. Accepts up to 10 AWG terminal forks.

Accessory Panel: CTs 4200 accepts an optional IQ-MC4A or VCA-MC4A module. CTs 8200 accepts an optional IQ-MC8 or VCA-MC8 module.

Channel Level Controls: One 21-position detented rotary potentiometer per channel, ranging from infinity (–70 dB) to 0 dB attenuation.

Input Connectors: Removable Phoenix-style bar- rier connectors for balanced input.

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.

Cooling Vents: Front-to-rear forced airflow.

Options

Control Modules: IQ-MC4A: IQ module for CTs

4200A; VCA-MC4A: VCA module for CTs 4200A.

IQ-MC8: IQ module for CTs 8200; VCA-MC8: VCA module for CTs 8200.

Wall-mount level control panels for use with VCA module: 1-VCAP:Single-gang panel with 1 VCA channel volume control; 4-VCAP:Two-gang panel with 4 VCA channel volume controls.

T-170V:This is an autoformer that allows 100V output from the amplifier, 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.

Protection Systems

Thermal Level Control (TLC): If an amplifier chan- nel starts to overheat, the TLC circuit will engage that channel’s input compressor. By compress- ing the input, the amplifier will not generate as

CTs Series Multi-channel

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.

FIT (Fault Isolation Topology): Isolates faults within affected channels.

Fault: If an amplifier channel requires service, the corresponding 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.

35-Hz High-Pass Filter: A fixed 35-Hzhigh-pass 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.

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.

Models

Under-Voltage

Over-Voltage

Limit

Limit

 

 

 

 

100VAC (CTs

90VAC

110VAC

8200 only)

 

 

 

 

 

120 VAC units

108VAC

132VAC

 

 

 

220V/230V/240V

198VAC

264VAC

units

 

 

Power Fuse: A fuse protects the amplifier from excessive AC current draw.

Inrush Limiting: A soft-start circuit in the power supply minimizes the amplifier’s current draw during power-on.

Variable-speed Fan: Continuously variable speed fan directs the airflow through the amplifier for cooling.

Crown’s Three-Year, No-Fault, Fully Transferable Warranty

Crown offers a Three-Year, No-Fault, Fully Transferable Warranty for every new Crown amplifier—an unsurpassed industry standard. With this unprecedented No-Fault protection, your new Crown amplifier is warranted to meet or exceed original specifications for the first three years of ownership. During this time, if your amplifier fails, or does not perform to original specifications, it will be repaired or replaced at our expense. About the only things not covered by this warranty are those losses normally covered by insurance and those caused by intentional abuse. And the coverage is transferable, should you sell your amplifier.

See your authorized Crown dealer for full warranty disclosure and details. For customers outside of the USA, please contact your authorized Crown distributor for warranty information or call 574-294-8200.

Crown International 1718 W. Mishawaka Rd. Elkhart, IN 46517-9439 TEL: 574-294-8200 FAX: 574-294-8FAX www.crownaudio.com

Specifications subject to change without prior notice. Latest information available at www.crownaudio.com.

Crown, Crown Audio, IQ System and Multi-Mode are registered trademarks of Crown International. Other trade- marks are the property of their respective owners. Printed in U.S.A.

© 2005 Crown Audio®, Inc.

 

4/05

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Crown Audio CTs Series Front Panel Controls and Indicators, Back Panel Controls and Connectors, Protection Systems