reproduced by the amplifier. Use this setting if the respective amplifier channels are 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 respective amplifier channels are being used to power a sub-woofer speaker system.
In the "HI-PASS" setting, only the frequencies above the frequency set by the Crossover Frequency Control will be amplified and fed to the speakers. Use this setting if the respective amplifier channels are being used to power the full-range speakers in a system that also has separate sub-woofer(s).
4Crossover Frequency Controls
These Controls select the crossover frequency when the Filter Selector is in the "LOW-PASS" or "HI-PASS" settings. Adjust them to the appropriate position for the characteristics and crossover frequency requirements of the speaker system with which the respective channels of the amplifier are being used.
5Bass Boost Switches
These switches are used to accentuate the bass frequencies by adding +12 dB or +18 dB of boost to the signal (at 45 Hz.) on the respective channels.
6Remote Subwoofer Level Control Input
This connector permits the amplifier to be used with an optional Remote Control Unit PAB-RC. The PAB-RC control unit allows for adjustment of the bass boost gain level from the passenger compartment.
7Fuses
The circuitry of the amplifier is protected from damage by automotive-type fast-blow fuses. If fuse replacement is necessary, use only fuses of the same ampere rating as originally supplied with the unit. The use of fuses with incorrect ratings may cause serious damage to the amplifier. If fuses blow consistently, carefully check all electrical connections to the unit.