I have a Bose Lifestyle 12 Series 2 System, and I bought it a few years back. I paid $2000 for it, and now i'm pissed that it is broken. When I am watching or listening to something (any source), the speakers will turn off in about a hour. The music center still has power, because I see it on. The only thing is that the speakers turn off. Sometimes they turn off with a boom or a small blast sound. And if I turn the system off and back on, it will start working again, but only for 45 minutes. And once those 45 minutes are over and the speakers are off, I turn the system off, and start it again. So then the speakers will only stay on for 30 minutes, and so on. Then eventually, the speakers will keep turning off every 2 seconds. I tried all the regular Bose procedure, but I don't know what else to do. Can anyone help me? Thanks in advance to anyone who can help.