What did I do? I just bought a Klipsch 12 sub from Best Buy. I took it out of the box and pluged it in. It played for about 3 minutes and then nothing. I was checking out the volume at the time, but nothing too extreme. I was playing a movie (LOTR:FOTR) that has some good low frequencies, but I didn't have anything too loud. I did unplug it and then plug it back in. I waited about 20 minuets and tried again. Nothing. Any ideas?