I turn all to bitsream and make sure to turn the BD Video secondary audio to off. As indicated, if you turn this on, some BD disc will give :

1. DTS Master audio to DTS only
2. Dolby True HD become Dolby 5.1

I guess maybe just maybe..

3. Uncompress PCM 5.1 to Stereo PCM niah....

Someone IM me last time, why he still see DTS even though he selected DTS Master audio? Now I know the answer de.

This post has been edited by tracktion3: Dec 2 2009, 09:34 PM

this could be the answer.....

I remember reading about Denon 1909 audio setting. There is a function call Auto Surround mode. That feature has memory that will store the last setting u have for the type of input audio type. Check that if it can be reset or sumthing.

Or it could be a bug. check ur firmware..

read this....

http://www.avsforum.com/avs-vb/showthread.php?t=1177104

I tested my Pan BDP60 and Yamaha AVR 465.

The movie the rock is PCM 5.1. Yamaha AVR shows PCM 5.1 also. See pics attached.