This switch activates limiter when in ON position. The limiter prevents distortion of the output level when its gets
overloaded. When the output level exceeds its maximum, an internal adjustment will be made to prevent overloading.
The limiter is specially designed to safeguard connected full-range speakers. The high tone piezo drivers of these
speakers are now protected against distortion and harmonic signals which are the result of over steering the amplifier.
When the amplifier is used as a subwoofer amplifier then the limiter has to be switched off to set the extra “punch”.
14 Limiter
It is a protection for the amplifier against HF. In case there is high amplitude HF signal at the output, it shuts down
the amplifier thus protecting the internal circuitry and HF drivers of a speaker system.
Presence of prolonged, large amplitude, high frequency output can damage the speakers as well as the internal circuit
of the amplifier. The HF limiter circuit continuously monitors the output and shuts down the amplifier, if the high
frequency persists for more than 10-15 seconds. The HF limiter has no effect on normal music.
15 HF Limiter
Mains fuse secures the amplifier & wires against defects, Replace this only with the same type & rating.
13 Fuse
9
Low cut switch filters the low frequencies from the input signal. Cut off frequency is 30 Hz when it is selected. The
filter protects the cone of the speakers against unwanted and inaudible low frequencies.
12 Low cut
10 Sensitivity
This switch is used to select sensitivity to either 0.775V, 1V or 1.2V depending on the source.
Allows circuit & chassis grounds to be separated in case of ground loops.
11 Ground lift
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