What did i do! When i watch HDTV i put it about + 20 DB or so. When i put it on digital or regular cable i cannot hear it at all with this level. I need to crank it all the way to the highest my Kardon 325 will go to hear digital/normal cable. If i switch it back to a HD channel without turning it down...you cannot imagine the sound that comes out.....my girlfriend almost started to cry it was so bad...both our ears were ringing for 20 minutes.....not to mention i hope my new speakers are OK. So what did i do? It wasn't like this a few days ago. Even at full on the receiver i can hardly hear any channel except HD. I have a Kardon 325 and 7 JBL speakers if this helps.