I guess I don't fully understand this part of the setup either.
To me, the voices (center channel) are not as loud as it should be - and not as loud as the movie sound effects/music.
I currently have DSS set to "Source number of Channels". I have send everything via HDMI to Onkyo TX705 AVR with 7.1 speaker setup. I do not use Bitstreaming (but it does work if selected).
I thought "Source number of Channels" was play back whatever the source material is (2Ch, 5.1, or 7.1) through my 7.1 system using whatever speakers are needed (2 or 5.1 or 7.1 depending on source). However that setup doesn't seem to optimize the center channel when DVDs or 2Chn MKVs are played. It seems the old movies and TV Shows (and some 5.1 DVDs) have low voulme on voices, but most of the 5.1 and 7.1 stuff works as expected.
So, should I set it up as "7.1" since that is the speaker setup I have, or should I use the "5.1 channels (inside 7.1 Channel container)" since 90% of my movies are 5.1? Or maybe just use Room Correction and just increase the volume on the Center speaker.
Your advice is appreciated.
Edit: I meant DSP not DSS