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Coax/SPDIF audio output not working in Windows 7

OVerLoRDI

Diamond Member
I am putting together a cheap HTPC machine and am having a hell of time getting the coax audio output to work on Windows 7

I have a CM8768 sound card with the latest drivers.

http://www.rosewill.com/products/1689/ProductDetail_Overview.htm

Note: the drives I have are the latest CM8768 drivers, not the ones from Rosewill. From the reviews posted about this card on newegg the drivers Rosewill has are out of date and do not work with Windows 7

The drivers installed fine and under playback devices I see two choices, "speakers" and "digital output". I selected digital output, chose the formats my receiver supports, but the receiver isn't getting any input.

The I believe I have all the options properly configured in the C-media driver software, and my playback software (XBMC), but I think there must be a configuration setting I'm missing in Windows 7.

Any ideas?
 
According to the manual the receiver needs to be set to Auto-Surround or Stereo to receive a PCM signal. Try those settings and see if you get sound. The card doesn't do on the fly DD or DTS encoding so any sound outside of DD/DTS encoded files will only be output in PCM stereo.
 
According to the manual the receiver needs to be set to Auto-Surround or Stereo to receive a PCM signal. Try those settings and see if you get sound. The card doesn't do on the fly DD or DTS encoding so any sound outside of DD/DTS encoded files will only be output in PCM stereo.

Yeah, I got the receiver configured correctly as far as I can tell. My DVD player with Coax out works with this receiver perfectly.

I ultimately gave up and ordered $3 worth of wires to run 6 channel analog from the sound card.
 
Wait, which media player are you using?

Also, does the speaker config you selected match what your receiver supports? I ran into this issue when setting up my HTPC on Saturday. I set the speaker config for 5.1 since that's the speaker setup I have. Caused nothing but crashed in Media Center. Changed the config to 7.1 (what the receiver supports) and bingo, everything works.

I'm running HDMI to my receiver using the integrated i5 "video card".
 
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