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In Reply to: How do you access coax spdif? posted by hinduclient on February 10, 2007 at 11:06:12:
Hinduclient:The mic in (jack on the right side of card looking at back of PC) is what they call a "flexijack". You can select it's function between line in, mic in and digital out.
For digital out, you just use a cable that is 1/8" mono miniplug on one end and rca on the other, OR use a '1/8" mono miniplug to rca adapter" and use the digital cable of your choice. (I like the latter method).
Don't worry about a 1/8" miniplug not having a 75ohm characteristic impedance like the SPDIF spec calls for. RCA jacks do not have this either! ;) Only a BNC jack has a 70ohm characteristic impedance... these are only used for clock signals in prosound apps (typically) in North America.
It's a decent spdif output. I ran it into my Behringer DCX2496 and it sounds as good as the SPDIF out of my M-Audio Revolution.
The biggest thing about the SPDIF out of the X-fi is that it *IS* supported under ASIO, where the M-Audio revo SPDIF is not!
Hope this helps.
Follow Ups:
Another issue I had with the Audigy was the spooky spdif output at nealy 8V peak to peak, with the most distorted square wave I have seen. Is this still a problem? If it is, the level must be resuced and the output relocked.
Fmak:I don't think this is a problem with the X-Fi.
The only time I got a really buggy SPDIF out was when I was using Intel HD Audio drivers with an onboard codec instead of the manufacturers drivers. I got a distorted and badly clipped SPDIF. See my other post in this thread. We're having two conversations at the same time! ;o)
Ive been using the same Xfi extreme music card for some time now, I used the spdif output to a Zhaolu 2.5 dac. Im surprised you had good results with the Spdif output on his card Presto, I was pretty disapointed with it. My dac sounds far better when driven from my modded marantz cd67 then it does with the Xfi. Im wondering if it might be the cable im using, its a deent quality cable from Bluejeanscable.com but the problem is that I have to use an rca-> spdif adapter on one end to get it to conect to the Xfi. I think Ill get a cable made up with the 1/8 plug on one end and see if this helps.
Frank25:What mode are you running the SPDIF output in?
I am using Audio Creation Mode, ASIO mixer, set to "bit matched". Slider level = 75% (0db) and Master volume level = 100%. Output plugin is Otachan ASIO for Winamp.
Sounds no worse or better than my other "cheapy" SPDIF solutions. In fact, I find it sounds even better than my M-Audio Revolution 7.1 SPDIF output, which unfortunately does NOT have ASIO support.
Oh yeah - "bit matched" mode disables all effects except for EAX. You need to disable this effect manually even in ASIO/bit matched mode.
The biggest problem with the X-Fi is learning how to shut everything off! ;)
I have mine setup identical to yours only I use Foobar instead of Winamp. Yea it took me a while to figure out how to make sure all the crap was turned off:)
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