Sony, HDMI, DTS Pass through ?

[mark_d_drake]

Can anyone help with this...

I have just replaced my 34" Toshiba Direct View 1080i television that only supports component inputs with a new Sony 40" LCD KDL-40Z4100. My sources are a Sony BDP-S300, a PS3 and a Helios-X3000. My audio set up consists of a Meridian AV562V/565 combination with Meridian DSP5000 Digital Front and Center speakers and a pair of older Meridian M30's analog speakers as my rear channels.

Since all of my sources are HDMI capable, this has allowed to move in the brave new world of HDMI interconnects. However since I will not be replacing my Meridian AV562V/565 combination any time soon, I figured I could use HDMI interconnect to connect the BD-S300 to the KDL-40Z4100 and then use the Toslink digitial out on the KDL-40Z4100 to feed the audio signal back to the 562/565V. This appears to work fine for all encodings but DTS True HD.

With anything that is encoded Dolby Digital (eg 10,000 BC) the reciever gets a 5.1 signal that it can decode. It does not appear to matter whether the selected signal is TrueHD or not. With anything that in encoded DTS True HD, (eg Live Free or Die Hard), the reciever is only recieving a PCM signal from the TV. However if I hook the digital output from Blu Ray directly to the 562/565 then a DTS 5.1 signal is recieved.

I also get the same issue with a DTS encoded DVD. Can someone confirm that the BDP-S300 does pass DTS to a recievier via HDMI ? Is this behavoir expected, a bug in the BDP-S300 software or a bug in the TV's software ?.
-Mark