My 1 year old 5.1 setup's sub-woofer is randomly stops working in between songs, all the speakers are working perfectly fine. And If I gently hit it on top with my hand when it has stopped working, it starts to work fine for some time, then after some time again stops working. I opened it up, thinking it maybe a loose wire or something, tightened all the connections, but that doesn't solved the problem. Any help? I know the sound drivers and the sound card is not causing this issue. It's really annoying when base suddenly stops in the middle of the songs, and you have hit it for the base. It's a Creative Inspire T6300 5.1.