Dubstepforum.com

Hey all I have recently been trying to create this sort of wow sound bass like must die or virtual riot. Ive almost got it but just not quite. Any help appreciated.
Specifically this type around 1:24 and onward: Soundcloud

I'm guessing it's massive (just not really sure which WT). Virtual riot actually has a youtube channel where he explains some of his sounds in detail.

Good luck