My CHT-12 got blown yesterday! I couldn't post it because I was cramming for finals after running to Circuit City. It was an X-Mas present (but I kinda payed for some of it) so they exchanged it. I was running a 20hz test tone just to hear what it sounded like, and I guess I turned it up too high The volume was ~1/2 way up on the sub and about 45 on the receiver (Onkyo TX-SR501 which goes up to 80 on the redundant-o-meter). How common is this?