Hi folks, I have Aperion Audio 522 fronts and surrounds and a BIC center all driven by a Denon2803 receiver. At low to medium volume this is pleasing and detailed. At moderate to high volumes, harshness difines the sound quality. At high volumes it's eardrum ripping (not literally)and highly unpleasant to listen to, sadly. The Aperion speakers are beautiful and I'd really like to keep them. Is there a way I can modify the signal so that harshness/edginess is reduced at higher volumes? I have the receiver's treble control ALL the way down and it only helps a bit. Thanks very much!