MOTM

The OMS-410 is a great addition to an MOTM-410. You can use it to 
turn the MOTM-410 into a 3 band filter bank. You can't change the Q 
for each filter, but you can change the filter frequency. I use it to 
call up vocal formants on demand (using a couple of UEGs as 
sequencers). An MOTM-650 would be ideal for this purpose too since 
you could save the filter freqencies in a MIDI file. If you're going 
to go this route and have more than one MOTM-410, I also recommend 
using my 410 tuning procedure to get the filters aligned:

http://www.tellun.com/motm/mods/motm410/motm410.html

>I'm trying to stir up interest in a reissue of the Oakley OMS-410 
>companion module pcb, an add-on for Paul's great
>MOTM-410 filter. If anybody here would like such a pcb, please send 
>me a note off list and I will post a summary to
>oakley-synths. The new Oakley Modular has already reissued a number 
>of Tony's designs in bare-board form, with Tony's
>blessing and involvement. The OMS-410 is described here: 
>http://www.oakleysound.com/oms-410.htm.
>