PSW125 humming sound

Good day. I have a PSW125 that recently started humming. It continues to hum even with the subwoofer (rca) cable removed. If I lightly tap the amp at the rear the humming cuts out for a moment. Same with twisting the volume knob. Tried switching between on/auto/standby with same results.

I stay in India so can you pl help me.


  • KennethSwaugerKennethSwauger Moderator Posts: 6,065
    In all likelihood there is a problem with the sub's bass amplifier, probably located with the volume control. It would be best to send an email to: for location of Polk importer for India.
    "Passion is inversely proportional to the amount of real information available", G. Benfield
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