Crown CTS 8200, CTS 4200 Front Panel Controls Indicators Bridge Mode Indicator, Ready Indicator

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CTs Multi-Channel Power Amplifiers

4 Operation

4.2 Front Panel Controls

and Indicators

Note: CTs 8200 is shown. Some CTs 4200 features are in different locations.

A. Bridge Mode Indicator

Yellow LED, one per channel pair, illumi- nates 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, indicat- ing that the amplifier must be powered off and on to reset the Mode. See Section 6.9.

B. Ready Indicator

Green LED, one per channel, illuminates when the channel is initialized and ready to produce audio output.

C.Signal Indicator

Green LED, one per channel, illuminates to indicate the presence of input signals above –40 dBu.

D.Clip Indicator

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

E.Thermal Indicator

Red LED, one per channel, flashes when the channel has shut down due to thermal stress or overload. If the power supply goes into thermal overload, all channel LEDs will flash.

F.Fault Indicator

Red LED, one per channel, illuminates when the amplifier output channel has stopped operating.

G.Ventilation Grille Front-to-rear forced airflow.

H.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).

I.Power Indicator

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

J.Power Switch

Amplifier is on when the switch is in the IN position.

Figure 4.1 CTs 8200 front panel.

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Operation Manual

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Contents CTs Some models may be exported under the name AmcronImportant Safety Instructions CTs Series amplifiers require Class 2 output wiringOr has been dropped Safety Standard European Representatives Name and AddressFamily Name CTs EMC StandardsSetup TroubleshootingSpecifications AC Power Draw and Thermal DissipationHow to Use This Manual FeaturesWelcome Proven Crown AB+B Multi-Modeoutput topologySetup Unpack Your Amplifier Install Your AmplifierChoose Input Wire and Connectors Choose Output Wire and ConnectorsCrown recommends using professionally constructed, high Over 60 ft 18.3 mWire Your System Dual 8/4 Mode Dual 70V ModeBridge-Mono 16/8 Mode Bridge-Mono 100V ModeStartup Procedure Connect to AC MainsPrecautions OperationFront Panel Controls Indicators Bridge Mode Indicator Ready IndicatorSignal Indicator Clip IndicatorBack Panel Controls Connectors AC Power Cord Connector Output ConnectorsAccessory Panel Input ConnectorsAdvanced Features Options Channel Level Control Attenuation in dBOptions Control Modules Wall-Mount level control panels for use with VCA moduleChoosing the Right Module Input SensitivityTroubleshooting Refer to .1.6 for specific voltage requirementsThermal Level Control TLC is active Power supply thermal overload Mode switch was switched while the power was onSpecifications Dual ModeCrosstalk below rated power, 20 Hz to 1 kHz Common Mode Rejection CMR 20 Hz to 1 kHzPower Draw at Idle 120VAC mains, all channels in 70V mode Dimensions Width, Height, DepthCTs 8200 Typical Frequency Response 1 W CTs 8200 Typical Output Impedance vs. Frequency AC Power Draw Thermal Dissipation AC Power Draw and Thermal DissipationOhms Bridge 320x4 Service Warranty 12/01Worldwide Except USA & Canada CTs Multi-Channel Power Amplifiers Crown Factory Service Information Nature of ProblemThis page Intentionally Left Blank CTs Multi-Channel Power Amplifiers
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