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Front Panel
AC Power Switch/Circuit Breaker (1)
The CS 800H amplifier has a combination AC switch/circuit breaker on the front panel. If the switch shuts off during normal use, push it back to the ON position once. If it will not stay on, the amplifier needs servicing.
Input Attenuators (2)
Whenever possible, set the attenuators fully clockwise to maintain optimum system headroom. The input attenuator controls (one for channel A, one for channel B) located at the front panel adjust gain for their respective amplifier channels in all modes. See the specifications at the end of this manual for standard voltage gain and input sensitivity information.
When operating in the bridged mode, the channel A attenuator controls the signal. See the section on Bridged Mono Operation for more information and precautions.
Front Panel Indicators
The CS 800H features four front panel discrete LED indicators per channel: ACTIVE, DDT, TEMP and DC. These LED indicators inform the user of each channel’s operating status and warn of possible abnormal conditions. This amplifier also features two
Signal LED (3)
This LED is at the bottom of the bar graph display and lights when its channel produces an output signal of greater than 2 Volts RMS or 50 mV input with a 0 dB attenuation of the front panel knobs. It is useful in determining whether a signal is reaching and being amplified by the amplifier. The 10- segment graphs indicate the level of signal present.
DC LED (4)
The DC LED lights to indicate that the channel’s output relay is open, disconnecting the speaker(s) when the amplifier senses a DC voltage or subsonic high level signal at its output.
Temp LED (5)
The Temp LED lights to indicate that the channel’s output relay is open, disconnecting the speaker(s) due to an overheating condition. Once the channel temperature has returned to safe operating conditions the LED will turn off and the speaker(s) will be reconnected.
DDT Active LED (6)
Illuminates when DDT Compression is taking place. With the Enable/Defeat switch in the Defeat position, the LED indicates when clipping distortion is occuring.
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