3 Filter Selector
This switch allows selection of the frequency filters that permit the amplifier to be used to reproduce the entire audio range, just the bass, or all frequencies above the bass range.
In the "OFF" position of the switch, the response is flat and unaffected so the entire audio frequency range is reproduced by the amplifier. Use this setting if the amplifier is being used to power a full range speaker system.
In the "LOW PASS" setting, only the bass frequencies below the frequency set by the Crossover Frequency Control will be amplified and fed to the speakers. Use this setting if the amplifier is being used to power a
In the
4 Crossover Frequency Control
This Control selects the crossover frequency when the Filter Selector is in the
5 Bass Boost Switch
This switch is used to accentuate the bass frequencies by adding 8 dB of boost to the signal (at 45 Hz.).
6Fuse
The circuitry of the amplifier is protected from damage by an