Yes, the subwoofer amp and pretty soon it will go also, if it has not already...There is nothing coming from my center tweeter and the sub is almost dead---I got all 3 replacements from a person on Ebay and so the next time it happens, I send the old ones to Bose and then R&R the bad one--it's nice to have a 2nd set--By the way Bose charges 75.00 now plus shipping--you have to email before sending the unit in.....