As promised I would reinvestigate the sound problems concerning the X-Fi MB2 / Realtek ALC889 Sound Chip. If you have the Thunderbolt Card this may not concern you.
So far I have seen this all covers the following motherboards:
Problems often heard:
- Crosshair V Formula
- Rampage IV Extreme
- Maximus IV Gene-Z
- Maximus IV Extreme-Z
- And maybe other board too.
Well I am proud to say that all these problems can be overtaken!
- Hissing and plopping sound when switching system of or on
- Bad Sound Quality Generally.
- No more than 2 speakers available when using optical out.
I just checked everything and it all works.
I can do all and everything with my sound device: on 7.1 Surround Headset, 5.1 Computer Surround Set (3,5 mm jacks) and Home Entertainment Set connected through optical.
Supporting full Surround!
Additional information: added march 28th 2013
The usage of the optical output is a source of a lot off questions. But I have used it succesfully on my home cinema set. The thing that throws off a lot of people is that the soundcard settings do not show any specific setting that you can manage.
However, and this is the part that most people can't seem to grasp: when using an optical audio : the system is in the through put mode, so only the raw audio is sent digitally. You cannot affect it since this is determined by the sourch off the sound: a game, a movie or whatever.
So the receiving end off the audio signal processes the audio = makes the sound come out off your speakers.
The same thing applies to a dvd ot blue-ray: if you put it in your player the way the disc is setup for example recorded with dts - > and your dvd-player supports that, it will use DTS. Another Disc may have complete other sound like standard dolby -> the dvd-player does that. Most home cinema sets show the sound mode that the are in ; after the disc has been loaded. So if you want to change the output mode you will do that on your homecinema set.
NOW back to your PC:
If you want to use the optical cable, remember you can't set or çhange anything about the output... But the receiving end will use the most optimal output mode that is been send through the optical cable. If you connect it t a home cinema set look on the sets display which mode its in an change the modes, it will only change to the modes available regarding the signal out of your pc.
In other words: It works fine.