Will one or more of you digital whizkids give me a clue...puhleeze. I recently upgraded my receiver from a Panasonic SA-HE200 (decent Mosfet amp'ed Rx) to a new Yamaha RX-V2500. I set everything up and settings were checked, double checked, triple checked, had AverageJoe quadruple check...and we knocked our heads around trying to discover why the digital signal (via coax) from the trusty Panasonic F87 DVD player was much inferior to the analog signal. I couldn't seem to get a discrete surround process going unless it was in Pure Direct or Multi-channel. I must have tried all the PLII+, DD-EX, etc formats 10 times each. Still no soap. I almost figured I had a defective Rx. THEN!!...we decided it had something to do with the DVD digital output of either Bitstream or Pulse Code Modulation...which is DVD player selectable. I checked and it was set to PCM with warnings against using Bitstream on some receivers (could damage speakers). Well, that turned out to be the big problem. The Yammie would not process the PCM data into surround formats (as did the Panasonic Rx). But it now sounds great with the DVD set to output with Bitstream. Can someone describe in simple English for my simple mind why this is so and why some receivers are functional in one mode only? Or, is there an Rx setting I missed that would have properly engaged the PCM data? Thanks in advance for your wisdom.