Panasonic SA-XR55S & Dolby Digital /Dolby Digital EX

[popm8]

Hi.
Can somebody tell me what Dolby Digital EX is ?

Is this receiver compatible with 'normal' Dolby Digital ?

My setup would be :
- Professional digital audio interface supports 24-bit S/PDIF Out
NVIDIA SoundStorm with real-time Dolby Digital 5.1 encoder on ABIT NF7-S 2.0
-Panasonic SA-XR55S
http://www2.panasonic.com/webapp/wcs/stores/servlet/vModelDetail?displayTab=O&storeId=15001&catalogId=13401&itemId=93546&catGroupId=25013&modelNo=SA-XR55S&surfModel=SA-XR55S&cacheProgram=11002&cachePartner=7000000000000005702

-4x100W Techics speakers + 1 centre
-1 SPDIF optical cable

I don't know if this setup is going to work ... can you help me???

 

[MDS]

DD-EX is a 6.1 format where the 6th channel is matrixed into the left and right side surround channels and extracted on playback. If the receiver supports DD-EX it will also support Dolby Digital 2.0 and 5.1.

You should be able to use the s/pdif output of the SoundStorm to connect to the receiver. There should be a setting for the soundcard that allows you to send the digital signal untouched to the receiver so that the receiver can decode it. The real-time DD encoder (I think it's actually called DD Live 5.1) will encode analog or PCM signals to DD 5.1 on the fly.

 

[popm8]

Thank you very much.

So 'Dolby Digital EX' is downward compatible with 'Dolby Digital 5.1' ...

 

[popm8]

If I were to use the SPDIF output, the codec (Realtek ALC650 ) doesn't matter.

The receiver will be doing the decoding.

 

[j_garcia]

DD EX technically is only a 5.1 format, since the rear channel is matrixed. If you have a 7.1 or 6.1 setup, the rear center is extracted to create the rear channel information. In a 5.1 seutp you hear "normal" 5.1, and the rear channel is ignored (nothing is lost).