Feedback when sub cable is touched...

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  • Hammie
    Senior Member
    • Oct 2005
    • 304
    #1

    Feedback when sub cable is touched...

    Last night right before bed, I dropped a piece of paper behind my SVS sub. When I reached behind the sub to pick it up, I touched the RCA cable connected to my sub and thought it was about to blow up. It was the loudest feedback I have ever heard. The sub cable is a 35' Monoprice Premium RCA cable rated for in-wall installation.

    I also have a 6' sub cable going from my Denon Sub Out to the wall. There is no feedback when I touch that one.

    Therefore, it is isolated to just that cable segment.

    Any thoughts on my issue? Is it a faulty cable? Is this bad for my sub?
    Panasonic TC-P65VT30
    Onkyo Pro PR-SC5508 | M2Tech Young DAC | Emotiva XPA-1 (x3), XPA-2
    Oppo BDP-93 | DirecTV HR23-700 HD-DVR | Pioneer PL-670 Turntable
    Sony Playstation 3 | Nintendo Wii | Apple TV 2, Mac Mini (iTunes Server), iPad
    B&W 804S, HTM3S, CWM DS8 | SVS PB12-NSD | Denon AH-D2000 Headphones
    Tripp Lite HT1210ISOCTR Power Conditioner, SMART1000LCD UPS System
    My Bowers & Wilkins 800 Series Setup
    Next Upgrade: Cables
    Tags: None
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    • David Meek
      Ultra Senior Member
      • Aug 2000
      • 8934
      #2
      It's not good for your sub. It could be a faulty cable or possibly the input jack on the sub. Swap out the cable and test it again. If it happens again then it's not the cable.
      .

      David - Trigger-happy HTGuide Admin
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        • Chris D
          Ultra Senior Member
          • Dec 2000
          • 16875
          #3
          Subs are especially susceptible to getting feedback from the electric energy of the human body, if the inner conductor of the low-voltage cable is touched. However, there should NOT be any interaction going on if the outer jacket of the cable is touched or moved. If you happen to touch the plug head, with it seated in the plug, that could cause interference. But not the cable itself.
          CHRIS

          Well, we're safe for now. Thank goodness we're in a bowling alley.
          - Pleasantville
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