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    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #1

    Apr 3, 2009, 06:19 AM
    Humming from Speakers
    Guys, I need your advice: I have 10-speaker Bose sound system and Sony 5.1 "radio" that can handle every component there is. The only components connected are: Phillips DVD player, flat screen TV, and my Cable Box. The Sony "radio" is also connected to my Apple Airport. All is in one cabinet.

    When I turn power ON to the "radio" - w/o playing any component - I hear very noticeable hum from my speakers. It is very annoying and bugs my wife and dog a lot. Please, HELP or I'll be forced out of my new, beautiful, house !

    Many thanks !

    Milo
    StaticFX's Avatar
    StaticFX Posts: 943, Reputation: 74
    Senior Member
    		  
    #2

    Apr 3, 2009, 06:30 AM

    I memory serves, the humming is because you have a ground issue somewhere. Is it from all speakers?

    Try unhooking all speakers, then reconnecting one at a time.

    If that doesn't help, I think there are things you can hook into the wires to help (but I'm not sure what its called)

    I get the hum from my SUB. But if I wiggle the wires sometimes it goes away (im just too lazy to find the real fault lol)
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #3

    Apr 3, 2009, 06:48 AM

    Static: Hum is from active speakers. ( 2x2 speakers run with radio only, 5x2 speakers run with DVD / surround option ) It is quite loud. I will investigate when I get home tonight and let you know...
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #4

    Apr 3, 2009, 09:22 AM

    I suspect a ground loop.

    Try to determine the maximum set of devices that you can connect without hum. Disconnect the cable box first.

    Also, do you live close to a radio transmitter?
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
    Ultra Member
    		  
    #5

    Apr 3, 2009, 10:30 AM

    It could be 60 Hz hum
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