Don't know how many of you know this, but I totally learned by trial and error today that if your DVD player is connected by Fiber Optical Cable to your receiver, its the settings on the DVD player that you've made that control what's coming out of the receiver not vice versa. Specifically, we're talking about my Harmon Kardon 31 DVD player with its own settings connected by my Denon 3801 receiver with its own settings.. I imagine the same thing would apply to all systems. As such, you may want to double check all your settings in case something was accidently set on your DVD player that you're not aware of. If you think I am in error, just alternate the big and small speaker setup on your DVD player and see what happens to your sound. This probably explains whats happening to the guy who can't hear dialogue on "Master & Commander".