When watching DVD's you need to choose an input in your AVR; Do you use the TV input or DVD input???:huh: ... they will give you a different sound, I'm sure you're using the TV input (I've noticed this in my system) :yes:.... I'm not sure if I can because it's optical from TV to AVR and HDMI from DVD to AVR. ...
Are you using your TV speakers at the same time with your AVR speakers??? ... I think is not a good idea, at least to me, the sound is not right ... I always set the TV volume to "zero".