I understand there is a bass mgt problem with the Denon(Denon site). They say to set all your speakers to small except the fronts(left&right) with no sub in the system. I did this and it seems that a better quality of sound is coming out of my JBLs312 center speaker with it set to small. Am I freaking out??????? Is this input related????? If so then I need to reset all my speakers to large for DVDs and CDS.