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Humming from Speakers

Discussion in 'Beginners, General Questions' started by Miguel_S, Jan 22, 2004.

  1. Miguel_S

    Miguel_S Auditioning

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    Hello,

    I have begun to hear a hum coming out of my Speaker setup (in wall) while watching the TV. This usually happens after about 60 to 90 minutes the TV has been on.

    I have disconnected the speaker wire leading from my receiver to the wall plate, yet the hum is still there. I have also turned off my subwoofer and the hum remains.

    Can any of you shed some light on what could be causing this hum. I ran the speaker wires to intersect the electrical power wires at 90 degrees.

    Thanks,
    Miguel
     
  2. John S

    John S Producer

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    Is the hum still there if you disconnect the speaker???


    May sound silly, but you never know....
     
  3. Bob McElfresh

    Bob McElfresh Producer

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    Hi Miguel. Welcome to HTF!

    Remember that having AC power wires near your speaker wires causes no problems - as long as there is no current flowing in the AC wires!

    Since your problem happens 60-90 minutes after you start to watch TV, could:

    - the dishwasher be running
    - lights be turned on that were not before
    - etc.

    The other common source of humm is your CATV service. Try watching a tape or DVD if the humm starts up and while listening, disconnect the CATV feed. Does the humm stop? If so, call the CATV company.

    Hope this helps.
     

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