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Home Theater PC Default HDMI Audio Out but SPDIF input thru Speakers

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Last response: in Components
March 2, 2012 2:35:21 PM

I am a non audiophile but want to learn a bit. For this scenario I have a home theater pc using HDMI audio to my big screen and I am just using my big screen speakers. I would like to use the PC for a receiver as well by installing a dedicated sound card that will take the spdif optical signal from my big screen and then output that to a set of klipsch 5.1 promedia speakers I have that only has the three 3.5mm jacks for left/right, surround, and center/sub. Does this make sense at all and if so it is possible with any sound card out there?


Audio Newbie

More about : home theater default hdmi audio spdif input speakers

March 2, 2012 6:48:43 PM

Simpler solution is to output everything from the soundcard, instead of going to the TV, back to the soundcard via optical [which has a penalty in performance], then out to the speakers.

First question, is from what device is the HDMI connection to the TV comming from? The GPU? Or a digital receiver?
March 3, 2012 11:23:24 PM

Why don't you just use your sound card directly? Confused.
March 4, 2012 12:09:50 AM

You need a soundcard with 5.1 analog output (the three 3.5mm jacks) and a digital optical input to plug your TV's digital optical output into. Then your set. Very doable

Both of these PCI cards will work nicely: HT | OMEGA CLARO II (


If you need a PCIe sound card this will work as well: Creative Sound Blaster X-Fi Titanium Fatal1ty Professional (

Some newer PC speakers have better digital connectivity, however none will hold a candle to the sound quality you get from the klipsch 5.1 promedia speakers. So do yourself a favor and don't go that route. Stick with your current speakers and the above suggestion and you will have a better sounding system. :sol: