Winner Winner Chicken Dinner! Ground loop…duh! I had the stereo rack plugged into the new, dedicated circuit, but I had the subwoofer plugged into a separate outlet that was not on the same circuit. Moved the subwoofer over to the dedicated circuit and…viola… no hmmm. Thanks all!
Hum in Speakers with New Dedicated 20 amp Circuit
I just ran some 12-2 from a new 20 amp breaker and installed a dedicated outlet for my system. Now I get a very audible hum in both channels. If I switch back to the shared 15 amp outlet, no hum. I checked the new outlet with a tester and it checks out as wired correctly. At the electrical box, the black wire is connected to the breaker and the white and ground are attached to the same ground strip. I’m using a 20 amp receptacle.
Anyone with thoughts on how to resolve?
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- 43 posts total
- 43 posts total