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F R O N T P A N E L

1. LEVEL

Detented potentiometers with a dB-scaling to adjust the overall amplification of the power amplifier. These

controls should be set between 0 dB and –6 dB, depending on the output of the connected equipment –

e. g. a mixing console. The printed scale shows the actual amount of damping in the amplification of the

power amplifier.

2. LIMIT

This indicator lights when the amplifier enters clipping and the internal limiter is activated. Short-term

indication is problem-free. Anyway, if this indicator lights continuously, reducing the overall volume is

recommended to avoid that the connected loudspeaker systems are getting damaged from overload.

3. SIGNAL INDICATOR

This indicator lights when an output signal is present. In case of short-circuited speaker cabling or one of

the amplifier's protection functions is engaged the indicator is off, showing that there is no signal outputted.

4. PROTECT

If this indicator lights during operation, one of the amp's internal protection functions against thermal

overload, short-circuit, occurrence of HF or DC at the output ... has been engaged. The cause that let

the amplifier enter the protection mode – e. g. a short-circuited speaker cable – has to be eliminated. In

case of thermal overload you have to wait until the power amplifier returns into normal operation mode.

5. Power ON Indicator

This LED lights when the appliance's power switch has been engaged. If the indicator does not light after

you have engaged the power switch, either the amplifier is not connected to the mains or the internal

mains fuse is blown and has to be replaced.

6. POWER Switch

Using the POWER switch you turn the amplifiers power on. To eliminate unwanted noise and knacks in

the connected speaker systems, loudspeaker output switching is performed delayed via relays. An initial

current inrush limiter prevents the mains fuse from being blown during power-on.