How To Fix Hum With 2 Prong Polarized Plug?

Discussion in 'Archived Threads 2001-2004' started by James Edward, Sep 18, 2002.

  1. James Edward

    James Edward Supporting Actor

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    My long anticipated SVS PC Plus showed up today. Unfortunately, so did a hum. Below are my symptoms. I should add that I simply unhooked my old SVS 20-39PC and plugged the new on in. All cables are the same.
    The power cord is two prong, so I can't use a cheater plug.
    The power cord is polarized, so I can't reverse it at the outlet.
    It also is designed in such a way as to not allow it to be reversed at the sub end (power cord is detachable).
    I don't have cable, I have a dish.
    I tried running the plug to a separate outlet, off the power center used for the rest of the equipment- no go.

    Any suggestions? Thanks
     
  2. Doug BW

    Doug BW Stunt Coordinator

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    Yeah, email SVS right away. Fastest and best way to get your problem solved.
     
  3. RichardH

    RichardH Supporting Actor

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    You might try unplugging different items one by one and see if the hum goes away. If it goes away with a particular item unplugged, you could use the cheater plug on that item, or try to move that item to another plug, etc.

    Keep in mind that lifting the ground on a piece of equipment that is supposed to have it is not the best fix, but at least a quick, temporary one.
     
  4. SVS-Ron

    SVS-Ron Screenwriter

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    James might have done more investigating here but I believe he tracked it down to his Direct TV line, DTV/DSS is second only to cable TV as a source of ground loops in my experience. Either different/better grounding of the or an in-line filter is typically the answer there.

    Ron
     
  5. James Edward

    James Edward Supporting Actor

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    Ron is correct. I traced the problem to the 75 ohm cable from my satellite dish to the satellite receiver. I should add that Tom V. answered my e-mail within 45 minutes, offering suggestions on what to look for. Now I'm waiting for the correct fix from my installer.

    I disconnected the cable and calibrated the new 25-31PC Plus, and all will soon be well. The new sub really rocks. Anyone still waiting for theirs will not be disappointed.
     

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