Question about JBL PB10 Subwoofer

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When I plug it up it makes a loud buzzing humming sound that's unconteollable with the volume.

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Buzzing is usally AC line noise leaking into an un-shielded cable somewhere or a floating ground. If the AC plug is reversable, try that. make sure all audio cables are pluh\gged in tightly at each end and routed away from or at right angles to any power cords and away from other sources of strong magnetic fields like TV's. I've also seen variable track lights induce noise but it's usually minor.

If it still does it with no cables attached it's an internal amp problem.

Posted on Dec 31, 2010

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