Pioneer VSX-D509S no sound on 7.1 BluRay - AVS Forum
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post #1 of 9 Old 01-09-2012, 04:59 PM - Thread Starter
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I have a Pioneer VSX-D509S connected to my HTPC and HDTV via the TV's optical output. I use Cyberlink PowerDVD 10 to play BluRay's and have no problems until this weeks. 5.1 surround works great on DVDs, BluRay's and HDTV recorded on the HTPC.

Problem: I tried to play a Disney BluRay title. All the prevues played fine, but when I set the audio to 7.1 - the only option - I get zero audio. Absolutely nothing.

Other BluRays have played fine - although I do not know if they were 5.1 or 7.1.

My assumption is that the receiver is too old to know what to do with 7.1 audio. Am I correct? If this is the cause, do more recent 5.1 receivers handle 7.1?

Thanks!
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post #2 of 9 Old 01-09-2012, 06:08 PM
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What is the audio connection from PC to AVR?
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post #3 of 9 Old 01-09-2012, 06:32 PM
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Quote:
Originally Posted by vincewarde View Post

I have a Pioneer VSX-D509S connected to my HTPC and HDTV via the TV's optical output.

Optical connections cannot carry 7.1 audio. You need to run HDMI from the BD player into the AVR.

Roger

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post #4 of 9 Old 01-09-2012, 07:01 PM
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But why no audio at all?
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post #5 of 9 Old 01-09-2012, 09:53 PM - Thread Starter
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Originally Posted by BIslander View Post

What is the audio connection from PC to AVR?

HDMI to the TV, Optical from the TV to the Receiver.
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post #6 of 9 Old 01-09-2012, 10:06 PM - Thread Starter
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Quote:
Originally Posted by Roger Dressler View Post

Optical connections cannot carry 7.1 audio. You need to run HDMI from the BD player into the AVR.

That explains a great deal. My guess is that my software will not "translate" the 7.1 stream to 5.1, the TV just does a pass through to something that cannot accept it.

Thanks to all!
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post #7 of 9 Old 01-09-2012, 10:42 PM
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Quote:
Originally Posted by vincewarde View Post

That explains a great deal. My guess is that my software will not "translate" the 7.1 stream to 5.1, the TV just does a pass through to something that cannot accept it.

That's not it. The HDMI handshake between the TV and the HTPC will produce a stream that the TV can process, which is also something that an AVR can handle, even an older one like yours.

When you say you've set the PC output to 7.1, what do you mean? TVs can't process 7.1 audio. What is the audio format of the disc you are playing and what is the output setting you are using?
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post #8 of 9 Old 01-10-2012, 11:15 AM - Thread Starter
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Originally Posted by BIslander View Post

That's not it. The HDMI handshake between the TV and the HTPC will produce a stream that the TV can process, which is also something that an AVR can handle, even an older one like yours.

When you say you've set the PC output to 7.1, what do you mean? TVs can't process 7.1 audio. What is the audio format of the disc you are playing and what is the output setting you are using?

I had set the DVD to 7.1 - which was the only option. Also, even the PC has HDMI, it's really SPDIF connected to the HDMI inside the box. So, even if I connected the HDMI directly to a receiver it would not solve the problem - because it's a hardware limitation.

So, I decided to hunt for the newest driver. Windows update said I had the latest one, but as a PC tech I have learned to take that with a grain of salt. In this case it was more like a bag of salt. The maker of the sound chip had a driver updated only one month ago. I loaded it and at once I saw support for 7.1 (probably via directly connected speakers).

So I restarted PowerDVD 10 - and now it has support for 7.1 AND an option to downmix to 5.1! I tried it and played the previously silent Blu Ray. It now has sound.

Thanks again to all who helped!
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post #9 of 9 Old 01-10-2012, 11:49 AM
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Just as an education for me...but are you sure you are getting discrete surround sound to your receiver? How have you forced the htpc to send surround sound to the stereo? tv, and then get the tv to send that out to the receiver via an optical connection?

I'd say most people would plug the htpc to the receiver, then route the video only to the tv. Best way to make sure you get what the receiver can handle.

bg
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