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  1. #1

    Member Sales Rating: (0)

    Join Date
    Oct 2013

    Cool RM6000 set's subwoofer suddenly began to hum loudly

    My subwoofer is ailing. Yesterday, while I was listening to a video, the volume suddenly got real loud and then my subwoofer started to hum ( like when a microphone or something feeds back) and it still does this even with my Denon AVR off. I tried the "cheater plug" trick to remove the ground from the 120-V source of power, but no go; still hums loudly! Please help.


  2. #2
    Member Sales Rating: (0)

    Join Date
    Jul 2001
    Polk Audio


    Hello Brett,
    I'm sorry you're having a problem. It would be best to telephone Polk's CS department at: 1-800-377-7655 or send them an email to: Be sure to have the unit's serial number and date and place of purchase handy if you call.
    Regards, Ken

  3. #3

    Member Sales Rating: (0)

    Join Date
    Sep 2013


    Make sure all subwoofer signal connections are securely plugged in.

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