I have a set of these speakers i got from a friend and one of them was working but the other was not. So i checked the fuse on the non working one and it looked fine. I than proceeded to check the working one after powering it down and removing the ac cord. It looked the same so i put that fuse in the non working speaker and nothing happend. I than put that same fuse back in the working one and it no longer works. The subwoofer is what is not working the speakers them self sound great.