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Subwoofer making a low buzzing sound when turned off?
I have a logitech desktop 5.1 system hooked up to my computer and when I turn it off there's still a barely audible buzzing sound coming from the subwoofer if I listen to it. Why is that? It has to be using some (probably tiny) amount of power still.. I don't know much about electronics so I don't understand what or why it makes that noise when it's supposed to be off..?
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