[almo247]

I have this annoying hum in the center speaker that goes away if I unplug the HDTV. Speaker is placed just above the electrical outlet the TV is plugged into. This system is in an RV. Tried a filter from radio shack, no help. Is this a grounding or a shielding problem. Stereo amp is in a closet 30 feet away from speaker and TV. I suspect the speaker in close proximity to the electrical outlet could be the problem.

 

[Knucklehead90]

Does the speaker wire run in the same wire run as the 120v wires feeding the plugin? Its best to have speaker wire cross the 120v wire at a 90 deg angle rather than having them lay side by side. Speaker wire tends to pick up electrical induction.