I've got K-Horn mains, twin La Scala centers, twin SW15's, and combination of Forte II / Heresy's for rears. All this powered with Denon AVP8000 and 3 POA 2800's.
While I love the sound of all this lumber and iron, I've struggled for years with the with the legendary SW15 ground loop hum. I was somehow able to configure speaker and AC wiring in my CA home to minimize it but it is uncontrollable in my Ohio house.
Short of moving back to CA, has anyone found any scientific suggestions for me?