Originally Posted by Droff
It's been a long time since I've posted but I have a question.
I initially set up my movie room with a Sony BDP-S360 Blu-Ray player running into an Onkyo TX-SR608 AVR with a 7.1 surround system, using an Optoma PJ. I recently replaced my Blu-Ray player with a Sony BDP-S3700 due to the S360 taking for-ev-er to load a movie and replaced my PJ with a BenQ. I did not change anything else in the set up and I have the S3700 set to PCM out for the audio
This last probably is the problem. Verify what audio format is being sent to the receiver by pressing on the "Info" button on the receiver's remote. It'll show the type of audio (in text) and the number of audio channels (in the graphic at lower left on the screen) that the Blu-ray player is sending. I suspect that it's sending stereo (2.0) PCM.
To fix this, you need to configure the Sony Blu-ray player so it "bitstreams" multichannel audio:
set "Digital Audio Output" to Auto (the default; it must not be set to PCM)
set "BD Audio Mix Setting" to Off (NOT
the default; it must not be set to On. When it's On, soundtracks are decoded to stereo PCM)
although I believe the AVR decodes the audio input as well.
The AVR will automatically decode whatever encoding format it's sent.
My problem is that I've really noticed a difference in the audio when watching a movie. The bass isn't as deep and full with the S3700 and the audio overall sounds a bit depressed (lower).
Would there be that much of a difference in audio between the Blu-Ray players?
The quality of the sound primarily is determined by settings in the player.
Older Sony Blu-ray players could decode Dolby and DTS into multichannel (up to 7.1) PCM.
Modern Sony Blu-ray players can decode only into stereo (2.0) PCM. They're penny-pinching on the licensing costs of the decoders from Dolby and DTS.
As a result, the player downconverts multichannel audio into stereo, using some form of matrixing to try to provide surround-sound. Then the receiver has to use an up-mixer (Dolby Surround or DTS Neural:X) to expand the stereo so it makes use of all of your speakers. As a result, the LFE channel is lost and other damage is done to the audio, too.
Would I need to go into the AVR settings and make adjustments for the S3700?
Not in the AVR. Rather, you need to change settings in the Blu-ray player. See above.
I'm not a real big audio guy but I don't want to miss a better listening experience if it's available.
Thanks for the help.
A better experience is indeed available, assuming your AVR is being sent stereo PCM.