I have had the following setup for about 5 years now but I have never been able to achieve decent sound quality out of it. I bought the speaker system separate from the receiver and my guess is that one or the other is under-powered, which is why the system as a whole has poor quality. Receiver: Sony STR-DG600 7.1 Channel Home Theater Receiver Speakers: Yamaha NS-AP2600BL Woofer: Yamaha YST-SW010 I am a fan of good surround sound but the quality of this system has made me not turn the surround sound on anymore. and I am not ready to spend more money on this stuff (until I figure out what the issue is). Can anyone shed some light?