This video, via rpocc, demonstrates the Wob-Wob Fader – a DIY filter designed for dubstep wub bass.
Here are the details:
This short demonstration shows my little invention: CV-source dedicated for Dub-Step drops. Unlike regular fader, this one has its maximal value on the middle position.
Schematics available (http://rpocc.ru/). It’s very simple and it’s free to non-commercial use.
Note: The schematics URL did not work at the time this was posted.