I already have this 5.1 surround kit for a couple of time. My subwoofer is from Infinity Oreus Elan, and recently i put my stereo just a tiny bit louder than normally, and than the cracking sounds begun to appear (check audio file). Then i just turned the whole set off, en came back to it next day (today). I was listening to music again, and all the problems dissapeard. So i put the stereo a little bit louder again (not so loud the speakers get blown), and it happend again. I can just wait untill tommorow, but i really want to listen to it, because it's good! I already fixed it once myself, replacing an old switch with a new one, and i really don't want to take everything apart again. So when i am not listening to music nothing is going on, when i put music on the sound comes back untill i put the music down again. Also when i put my finger on the subwoofer output for speakers (there are no speakers connected to the subwoofer, but to the sound receiver) the sound also comes back. It doesn't come out of my 5 other speakers. So i am pretty clueless and want to know if maybe one of you guys can help me!