one way of adding some fat bottom end, is a filter down a percussion loop with a kick in it to lpf then reverse it. Or do the same as obove but instead of reversing it, use the 3/4 delay on the ohmboyz plugin.


Also there's a free plug in by some one which is a sub synth just wack it on your bassline. Or just patch a behringer sub synth into your bassline channel on your mixer