Can you play DTS-HD? It is 7.1, but will automatically play as 5.1 without loss of data at 24/96.
DTS on DVDs has always been better than the standard Dolby track. Dolby True HD is NOT
backward-compatible and will lose the center channel information if played on older equipment.
DTS-HD sounds perfect in the 5.1 -- downconverted to 24/96, I think.
Just a suggestion to those having trouble with DD.
My old Yamaha amp doesn't have HDMI, so either coax or optical supplies it with the DTS signal
and makes a flawless soundstage from either BluRay or DVD DTS. My two cents.
This has to do with Aquos because I have the BluRay fed directly to the Yamaha amp via coax
and to the UQ17u via HDMI without use of the ARC, it plays in perfect synch...