Watching a BluRay right now. When I navigate to "info" on my receiver or on the PS3 for the source currently playing, it says it's currently outputting 7.1 Multi Channel... Except the PS3 it's aware that the source was originally DTS-HD MA, and labels it as such, although the PS3 output is set to LPCM (I have an older PS3 which can't bitstream anyway, and I'm perfectly content to have the PS3 do the decoding)
But I only have a 5.1 receiver (the Denon 1713). I would have assumed that in the absence of 7 speakers, the PS3 would send the receiver a 5.1 mix.... but according to the info panes I'm receiving the 7.1 mix.
So my question is just whether I'm missing anything this way. Is the material intended for the back surrounds just being fed to the surrounds? How does the player/receiver sort this out?