Buchla Module Builds

I do not own many Buchla format modules but I do build and repair them for others.  I did build the Buchla 266 Source Of Uncertainty and the Pulser, Cross Fader, and Timbre generator functions in 5U format modules for my system with modifications for MOTM-signal levels.  I also have my own 208 Music Easel.  There is good historic Buchla reference material at www.fluxmonkey.com/historicBuchla/BuchlaIndex.htm

The following links are pages for Buchla format modules with my photos, build tips, and calibration procedure since the documentation can be rather sparse.

25S Analogue Waveform Generator V1 and V2

102 Stereo Locator  New

140 Timing Pulse Generator  New

158D Dual Sine-Sawtooth Generator  New

204 Quad Spatial Director  New

207 V2 Mixer/Preamp


208 V1 Stored Program Sound Source

208 V2 Stored Program Sound Source

208 V2.1 black version Stored Program Sound Source


208 Stored Program Sound Source 1973/74 Early Version

Music Easel Manual 1974   

A scan of the manual

Music Easel Manual 1974   

A better color scan of the manual contributed by Luther R.


211 Power Supply


212 Dodeca Module

216 Touch Controlled Voltage Source


218 V1 and V2 Touch Activated Voltage Source  New


221 Kinesthetic Input Port


227 System Interface V1 &V2

244 CV Toolbox


245 Sequential Voltage Source

248 'MARF' Multiple Arbitrary Function Generator


256 Dual Control Voltage Processor

257 Control Voltage Processor

258 Dual Oscillator V2 & V3

259 Complex Wave Generator V1 & V2  Updated

265 Source Of Uncertainty


266 Source Of Uncertainty

277 Signal Delay Unit V1 & V2

281 Quad Function Generator

284 Quad Voltage Controlled Envelope Generator

285 Frequency Shifter (Spin FV-1 version)  New

285 Frequency Shifter V2


285 Frequency Shifter 1977 Early Version


291 Voltage Controlled Filter

292C Quad Low Pass Gate V1 & V3

294 Four Channel Comb Filter

296 Programmable Spectral Processor


Other Buchla format modules

259C Dual VCO


Syntron Syrinx Filter Set Model 323


RSF Kobol Expander Dual VCO

402 Quad Dual LFO

Custom 24 dB VCF and Clock