Sorry, should have read that I doubt it wasn't heavily pushed, lol. They had it hooked up to the Denon 3805 as well and they said it was working fine for them but I think they didn't really notice or care about the sub. It's not making any strange noises, doesn't even hum at all. I'm testing the sub with different things, music, movies (saving private ryan, matrix, john wick etc etc) and the Yamaha blew it out of the water. I have it connected with a y splitter coming out from the avr and using both the l/r inputs on the sub.