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I recently moved and am having trouble getting my phillips subwoofer system model : MMS171W hooked up properly There is a loud background hum when I attach it like I think it should be attached. Any ideas ?

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This is most likely a "ground loop" and is caused by using two different electrical outlets for the two parts of the system -- main receiver and subwoofer amp.

Try using the same electrical circuit (wall outlet) for all of the equipment in the home theater, using a power strip or strips as needed.

Posted on Nov 07, 2010

  • idive4fun Nov 07, 2010

    Iam using a power strip and will change plugs around and play some more.

  • Rob C Nov 07, 2010

    Ok, if you're on the same power then the next thing to check is the audio hookups. How do you have it hooked up now? (what's the label on the connector on the subwoofer side, and where are you connecting it to the rest of the system)

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