Ok, my Yamaha receiver tone test sends a good signal individually to all 5.1 channels, adjusted to within 1 dB at my sweet spot. So far so good. Then when I run the Avia 5.1 channel identification test, front left, center and right individualize as expected although with a background static (pink noise?). When it goes to each of the two rear channels, I get a signal out of all 5 speakers, including static, not each rear as expected. The LFE comes out of the left front, clear with no static. I also note a similar problem with the phasing test. I checked phasing and am clearly connected red to red and black to black on all channels. I see a bunch of scenarios none of which I like: 1. You don't get good channel separation out of the rear by design 2. The Avia DVD is bad 3. The DVD player is bad 4. The receiver isn't decoding properly. I do note a distinct rear channel sound when playing a VHS tape encoded in old Dolby Surround that I am not getting with Dolby Digital DVD's. I am linked from my Sony DVD player to the Yamaha with a Monster Toslink cable. Help!