On the setup of my Denon 2802 amp, I set all my speakers (including mains) as "small", and the the crossover frequency as 80 Hz. In theory, that should mean that anythign less than 80 Hz should go through the subwoofer instead of the speakers. However, when I play a 60Hz test tone (downloaded from SnapBug website) through my amp, I am also getting the tone coming from the speakers and not onyl from the subwoofer. I would've thought this would've been seprated from the speakers. Any advice greatly appreciated. Thanks, Sarmad.