[sdiy] Filters on Buchla 400

[Lanterman, Aaron]

Howdy,

I've heard that the Buchla 700 uses CEM3372 filter chips (or at least some kind of CEM chip). Does anyone know if the 400 uses CEM filter chips too? (Or for that matter know for sure what's in a 700?) The 700 filters have resonance control (which is unusual for a Buchla design), whereas the 400 doesn't. The 400 filter is listed as 12 db per octave. The 3372 is more-or-less internally hardwired as a four-pole filter, making me think whatever is in the 400 isn't a 3372.

Just curious...

- Aaron