Originally Posted by raistline
Okay, here is the deal. If you are running your audio from you PS3 or Xbox to your TV via HDMI, it is only transmitting 2.0 audio to your TV. It is part of the HDCP negotiation that figures this out. So if you were to use the Optical out from your TV you will only get 2.0 out.
If you were to do audio through the Optical cable into your TV and set the PS3 or Xbox to output 5.1 audio and then use the optical out to whatever source you use, it will be 5.1.
I have tested this on my home system before I got an HDMI capable receiver.
I checked the PS3 audio output settings and for optical digital they are boxes you can tick like this:
[ ] Dolby Digital 5.1 ch
[ ] DTS 5.1 ch
[ ] AAC
[X] Linear PCM 2 ch 44.1 khz
[ ] Linear PCM 2 ch 88.2 khz
[ ] Linear PCM 2 ch 176.4 khz
[X] Linear PCM 2 ch 48 khz
I guess those two are already ticked and cannot be unticked because they must be the default if my guess is right. So then if I decide to run audio output through optical digital which boxes do I tick?
For Xbox 360 audio output settings there are three choices:
Dolby Digital 5.1
Dolby Digital with WMA Pro
Hope those details help.