Originally Posted by Tamino69
My HTPC is connected to my TV with HDMI and my Logitech Z-5450 is connected to the TV with TOSLINK optical fiber cable. I got a PS3 connected to TV with HDMI and I get bitstreamed DD on my Logitech, so there is no problem with passthrough on the TV.
The PC sees the two TV speakers in the chain, it simply cannot set more than what it sees.
No matter what you try, the PC cannot show more than 2 speakers since it can only see the 2 speakers.
I don't know how your PS3 gets you SPDIF through the TV, but with a PC its not going to work. AFAIK
, the only way to get SPDIF out from a TV is through its own tuner.
Edit: Just had another thought.
How do you know its pure DD/DTS on your Logitech? They are just computer speakers, aren't they?
So I'm assuming they don't have a display like AVRs to confirm the incoming signal.
For all we know, the PS3 is also sending stereo sound and the Logitech is applying some sort of processing to get pseudo 5.1 sound.
The only reason we know its stereo in the PC is because it is possible to see it.
Is there a display (in your speakers) that can confirm the signal?