Question about Sunfire True Sub MK II Subwoofer

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Sunfire MK II Hums on input signal. Hum can be canceled repeatedly by switching on or off lights in room. Problem is consistent. Sometimes a small electric shock can be felt at a light switch. Is this a grounding problem? How important is a proper ground?

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You must change light switch now with a new one-and grounding is very very important.

Posted on Mar 25, 2008

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If it works well with an alternate signal source, the problem might be either in reciever or the signal cable that you use, but could also be something else.

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3rq8 (Triarcuate)

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