Things that go hummmm

chargerman426
chargerman426 Posts: 419
edited February 2012 in Troubleshooting
So I have a peavey irp3000 amp power my subs run off an xlr cable from my integra 9.8 pre amp. Problem is the sub is humming like crazy. I've tried to lift the ground on the amp and the pre amp... No change. If I mute the avr it stopes or if stop my DVR it shuts up. But the problem is on my other impute to so I don't think the DVR is to blam. Any ideas?
If life had more tubes it would be a lot smoother.
Post edited by chargerman426 on
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  • hoosier21
    hoosier21 Posts: 4,411
    edited February 2012
    disconnect your cable TV cable and see if it goes away, if so you need a ground loop isolator

    http://www.ebay.com/itm/Cable-TV-Ground-Loop-Isolator-Jensen-ISO-MAX-VRD-1FF-/120416399884
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  • chargerman426
    chargerman426 Posts: 419
    edited February 2012
    I only have direct tv and I have them running through my furman power conditioner. Should I still give it a try? Thanks for the help
    If life had more tubes it would be a lot smoother.
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  • steveinaz
    steveinaz Posts: 19,538
    edited February 2012
    Have you tried running your audio from the Satbox via toslink? Power conditoners don't always break ground loops.
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  • Serendipity
    Serendipity Posts: 6,975
    edited February 2012
    +1

    An optical cable provides isolation, that may work, or you can look into using a ground loop isolator but try the optical cable first. Also, make sure all devices are on the same circuit or same split-phase of your breaker panel.
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