First of all, thanks to all those that provide the good technical information that is exchanged in this thread. I've read through it, and really appreciate not only the good answers, but the good questions, too. Roginator and kevkearney have most specifically touched on my questions, and I want to expand on them.
I'm in Juneau, Alaska, and am, as is Roginator, a GCI Alaska customer. We have a new Regza HDTV and are using it with a Toshiba HD DVD HD-D3, and now a new PACE TDC778X DVR. The AVR is an older, non-HDMI Harman-Kardon AVR 230. The AVR does have a pair of digital coaxial audio inputs, and a pair of digital optical audio inputs.
Since the AVR isn't HDMI, all the video components go straight to the Regza by HDMI. I do, however, run all the audio to the AVR using either digital optical or coaxial. In fact, the DVR is using the digital coaxial input to the AVR, and the AVR input is set to receive and use that input. The HD DVD is set up similar, and in the setup for that component, I had to set the HDMI to "downmixed PCM" (or was it "downmixed HDMI"?), and digital audio to "bitstream". And there starts my questions. I don't see similar choices for the DVR.
GCI doesn't include a users manual for the TDC778X when they had you the box, so I really appreciate the manual being available here. I've studied through it, and have a few questions.
For the digital audio out to the AVR, what are the best settings for Audio Output?
Optimal Stereo? (I presume.)
TV Speakers? (I don't think so.)
Stereo Output - Matrix Stereo?
What about the compression settings? None?
So far, I haven't found any channels from GCI that are DD or DTS, according to the AVR. Roginator, is that correct?