7.1 Setup problems with X-Fi Card

Question

I just installed the Soundblaster X-Fi card and hooked it up a new set of GigaWorks S750 7.1 speakers.
The problem I?m having is that I'm getting almost all of the sound out of the front 2 and center speakers and very little (almost like a bleed over effect) out of the side and rear speakers.
When I run the THX assignment test (or any of the tests to get the speaker placement and settings) to see if the sound is coming out of the correct speakers I get very strange results. The front left, front center, and front right speakers all sound fine and you can only hear the test coming out of the speaker that you are testing as it should be. However, when testing the side and rear speakers I can hear the test faintly in them and very well from the front speakers (when testing the side right speaker I can hear 'side right' from the side right speaker but mostly from the front right speaker at a ratio of like 90/10 in favor of the front speaker, the same goes with the rear speakers).
I would imagine that if you test the rear right speaker you should just hear the test coming from the rear right speaker, not mostly from the front right speaker. There must be something screwed up with the way that the speaker settings are set up, but I can't figure out what to do to get the speakers to all pull their own weight.
BTW, everything is connected and hooked up correctly to the soundcard and the speaker wires are all connected as they should be. The system is setup in 7.1 in both the Windows advanced audio properties and the Soundblaster software.

Answer 1

Well, after testing this in a game I've noticed a problem. With CMSS-3D enabled I'm getting complete surround sound from all speakers (great for listening to music, but I'm getting no locational sound in that setup - i.e. if something makes a sound from behind the character I'm hearing the sound from all the speakers). By disabling CMSS-3D I'm only getting sound out of the front right, center, front left speakers again and no locational sound in this fashion either.
I imagine that if you are testing the speakers and you test the front right speaker you should only hear the response from the front right speaker, and when you test the side right speaker you should only hear the response from the side right speaker, but I can't seem to get this to work. Sound is either only coming out of the front speakers or it's coming out of all the speakers, either option is acceptable and I know it has something to do with how the sound system is set up but I can't figure out what I need to do to get everything working correctly.
Basically when I test the speakers (in the volume panel or the THX Setup Console) I want to hear the test response for the front right speaker only coming from the front right speaker and the test response for the left side speaker only coming from the left side speaker. This is not happening and I'm pretty sure it should be, everything is hooked up correctly so it has to be something in the setup.