Ok the problem was that i hadnt installed the software from the CD but downloaded the drivers from the site. I figured all the important bits will be in the package, i was wrong. The surround mixer was not a part of the download and now that i installed from the CD, the surround mixer works

. I am able to move the sub slider and actually feel the subreacting.
I guess now i will have to get the gain reset again based on the ability of the slider.
A big issue i noticed was that the crossover frequency doesnt give an indication of the value. You have to do a lot of trial and error before you get the desired effect.