Maxx BPF-1A Bandpass Filter

[tomg]

The BPF-1A is based on a design I found in a magazine somewhere. Thats
about as close as I can get on this one. Maybe someone can help? The
BPF is a bandpass filter or wah-wah curcuit. There are lots of wah
designs out there but the only ones that seem to work are the ones
with noisy hard to find inductors in them. This is a little different.

It's like a piece of a state variable.. anyway it works very well. With
modulation at times it sounds a lot like a phasor but more often 
sounding like a Leslie or Univibe type thing. 

Modifications to the original..

Added input buffer
Added 3O8O for CV cutoff
Added CV mixer
Changed a few cap/resistor values..

No pcb yet..

http://www.tomg.vivid.net/maxx/page_039.html

The sample is me on the midi....a little less agressive..:)

http://www.tomg.vivid.net/maxx/pics/bpf1a.wav