John, I do feel it when I touch the sub, but also when I sit on the couch (the sub is right behind my couch and I can indeed feel it).
House, I did take your advice and took out the ground screw, helped a bit with the problems I had before (in the sense that the volume has to be higher before those issues happen). Sorry for not posting it, thought I had. As for the cheater plug, totally forgot about that while I was in the city! I did go to our little rink-a-dink hardware store here but they don't carry it, and the closest "big city" is a ten hour drive! but I'll check to buy one next week.
David, I don't have cable (satellite) but I'll get a ground isolator when I visit the factory next week anyway (just in case).
