The typical dubstep bass sound is typified by a simple routing of an LFO to the low pass filter’s cutoff, in order to create a moving filter effect, known as “wobble.” By changing the LFO rate in specific ways, you get shifting rhythms in the filter which are so prevalent in modern electronic music.
One way to achieve this is by utilizing the MOD BUS which has convenient control over this very routing, without any patching required. You’ll find amount controls for LFO to Pitch, Cutoff and Pulse Width.
Find the CUTOFF AMT knob on the MOD BUS and turn it clockwise to about 12 o’clock to start and adjust to taste after next steps. The more you have this knob turned clockwise, the more voltage is sent from the LFO to the FILTER CUTOFF, creating a more dramatic effect.
Bring up the mod wheel to about half way. Now set the Filter Cutoff to taste. The lower the cutoff point (turn CUTOFF counterclockwise), the more noticeable the modulation will be. Back on the MOD BUS, play with different LFO rates and try selecting different waveforms. Triangle and Square will be most commonly used for this effect. Your MOD WHEEL sets the depth of the modulation.
Also try patching the gate output to the sync input ;)