my system was stopping and starting a few months after being installed, and seeing as everything was brand new (3 months) i brought it in to the shop where it was installed. This is my first system so i wasn't going to take any chances. I heard them testing it for about 30 minutes and then they come out telling me that i had blown the subs and that they would have to send them in and get replacements. Is it possible that i actually blew the subs? it seems unlikely to me because they would work every day for a few minutes prior to getting them looked at. Can subs be blown and still work, or did the shop actually blow them. I found it suspicious because they took them out BEFORE telling me so i couldn't look at them.