New Xonar sound card for my HTPC gives me 7.1 surround sound
There aren’t many options for HTPC owners if they want lossless 7.1 surround sound from DTS-HD MA or Dolby HD. The problem is the lossless audio codecs like DTS-HD and Dolby HD require HDMI connections, and most video cards having DVI connections. Even video cards with HDMI need drivers capable of PAP decryption. There are some motherboards with HDMI, but the reviews weren’t that good so I decided to go with Asus’s Xonar HDAV1.3. The card is pricey, but it comes with Total Media Theater Blu-ray software which is around $70 anyway.
The TMT software sold me and I purchased the card. Install was simple with a PCIe slot needed. HDMI signals need video to work so there is a cable that comes with the card to bring the DVI signal from my video card into the Xonar HDMI input. I then connected the HDMI out of the Xonar to my Denon receiver.
I didn’t get any sound at first and my desktop size was all messed up when I first started the computer (I was using component signal before). After resizing the desktop to 720p I went and installed Xonar’s latest driver off their website. Still no sound after a restart, but I now was able to use the Xonar configuration program to update the settings. After a little while, I figures out I needed the settings set to HDMI and 7.1 surround sound speakers. I also set the PCM to 192 kHz. The important setting I forgot in the beginning was going to the control panel and changing Window’s speaker setting to 7.1 surround sound. I did manage to get sound after that.
I installed the TMT blu-ray player software and changed the audio setting to ‘HDMI’ which allows HDMI pass-through. This is important because I wanted bit streaming from my HTPC to the receiver so the Denon receiver could do the audio decoding. Sure enough, I got the “DTS-HD MA” display on my receiver when I played a blu-ray movie. At last, 7.1 surround sound from my HTPC.
However, there are a couple issues I’m still trying to figure out. One is I can’t play any regular DVDs with the TMT software. My TV immediately turns to snow if I play one and I have to restart the computer. The second problem is more significant as I’m getting HDMI sync issues. If I switch from my HTPC to my PS3 and back to my HTPC …then I get a black screen. There was a period where I couldn’t get the black screen to go away even with multiple reboots. I finally switched DVI inputs on my card and I got video. The HDMI sync issues could be a deal breaker if it keeps continuing. I’ll see as time goes on.












