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Author Topic: what would cause pc speakers to hum?  (Read 2618 times)

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Offline Teen Wolf Blitzer

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what would cause pc speakers to hum?
« on: September 28, 2011, 04:28:46 PM »
I have a pair of M-Audio AV20's on my PC.  They have developed a low frequency hum all of a sudden.  Even when unconnected to the PC.  If I plug them in in another room the moment I turn the on switch the hum appears.  It doesn't change when I raise or lower the volume.  They play fine.  Any ideas?
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Offline twatts (pants are so over-rated...)

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Re: what would cause pc speakers to hum?
« Reply #1 on: September 28, 2011, 04:38:11 PM »
Ground loop???

http://en.wikipedia.org/wiki/Ground_loop_(electricity)

Some older houses and apt. have issues with electronics... 

Terry
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Re: what would cause pc speakers to hum?
« Reply #2 on: September 28, 2011, 04:41:22 PM »
Quote from: twatts and not wearing pants on September 28, 2011, 04:38:11 PM
Ground loop???

http://en.wikipedia.org/wiki/Ground_loop_(electricity)

Some older houses and apt. have issues with electronics... 

Terry

Bingo, I even have an interconnect cable that does this... I've sorted it out and use it in my office where I don't care as much. :-\
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Offline DigiGal

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Re: what would cause pc speakers to hum?
« Reply #3 on: September 28, 2011, 06:37:37 PM »
From your description it could be a bad filter capacitor in the speakers internal power supply.
« Last Edit: September 28, 2011, 06:42:36 PM by DigiGal »
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Offline Scooter123

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Re: what would cause pc speakers to hum?
« Reply #4 on: October 02, 2011, 10:52:34 PM »
The equipment usually hums because it doesn't know the words...............
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