I am sure this has been talked about before. But I was listening to dvd-audio last night and it is driving me crazy when listening to 2 channel dvd-audio. Why is there nothing coming from my sub? When playing surround dvd-audio, my subwoofer is active, how can I get my subwoofer to be active during 2 channel playback? My sub is active when playing back 2 channel cd's. I just ordered an sacd player, I hope I do not run into the same problem.