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My promedia 4.1 speakers make this buzzing noise. listen.

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listen to that. What can cause this noise?


the noise is not constant. it comes in spurts.

this is the buzzing noise when speaker is idle, even when it isn't plugged into any audio source.


If this were ground loop interference, I'd expect it to be constant. 


This only started recently. These speakers are 22 years old.


I hope someone here knows this noise and how to fix.

Edited by pman62
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Posted (edited)

the problem was electrical interference when I changed the position of the subwoofer.


the back of the sub was facing a surge protector.


when i changed the position of the sub back to what it was before, the constant buzzing went away.

Edited by pman62
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