DIY | Filter | VCF | Korg | MS20 | René Schmitz
Korg late MS20 filter by René Schmitz ,follow the link http://www.uni-bonn.de/~uzs159/index.html for more circuit ideas by René Schmitz along with nice tutorials on OTA's ,temco and temperature compensation .
this filter has been discussed in the following thread : http://electro-music.com/forum/topic-22235.html