Crown CTS 8200 Operation, CTs Multi-Channel Power Amplifiers, page, A. Bridge Mode Indicator

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.

page 12 Operation Manual