I recently purchased the Avia disc and have been having problems setting up the surrounds. When I try to test my surrounds, when sound is supposed to only be coming out of my left surround it comes out of both, my left and right surround. Same goes with the right surround, it plays the tone out of both surrounds. On the other hand when I play the test tones on my reciever, the appropiate sound comes out of the appropiate surround speaker. Why the discrepancy? Along with that problem when the lfe test tone is supposed to be playing I get no sound out of the subwoofer or any other speaker for that matter. I am powering my speakers with a yamaha htr 5280 A/v reciever and have all my speakers set too small with all my bass being handled by the subwoofer. Another problem I encountered with the dics is that when it is doing the frewuency sweep for my subwoofer I get no sound at all. Is there any dsp that I have to have my reciever set to when I perform these test? Please help..