Quote:
Originally Posted by
jmeyers 
If I play a DTS Master Audio-encoded disc, the CB3 display reads "DTS+NEO6CIN"; if I play a Dolby TrueHD-encoded disc, that display reads "DOLBYDIGITAL+PL2MV".
Am I actually decoding and playing back Master Audio and TrueHD, or am I instead hearing simply the latest versions of the standard algorithms of each?
The latter. It appears that you are decoding the compatible lossy portions of the bitstreams, not the lossless parts, and each is then post-processed by a surround decoder, suggesting that you have a setup with at least one rear speaker. If you have two rear speakers (Lb/Rb) then you might want to change the default mode for DTS sources to also use PLIIx so you can enjoy a stereo effect from the rears instead of mono.
But that's not why you called.

Quote:
Moreover, if it is the latter, what can be suggested to address and solve this problem?
For some reason the BD player does not know the true capabilities of the Theta. That could be one of two things:
1) There is a miscommunication in the HDMI, as in the EDID for example.
2) The Theta is driving a TV whose EDID is passed back to the BDP-93. Some AVRs have a switch to change HDMI mode to let the AVR control the EDID. But I doubt this is what's afoot in your case, because a) Theta probably has no HDMI mode switch, and b) no TVs eat DTS so that would not even appear as it did in your case.
Sorry, no definitive answer.

You don't happen to ave the S/PDIF connected as well, do you?
If you have the AIX test disc that shipped with the BDP-83 (or can borrow it), it has a nifty way to prove what you are hearing. Play a DTS HDMA track. If it plays really quietly, it is playing the lossy track instead. If you play a TrueHD track, I think the lossy track has someone saying "you are not hearing the lossless audio" or something.