That's not happening everyday. Not one but six original Buchla 200 modules have surfaced today on ebay, including two of the most hard to find modules. The 237 Polyphonic Keyboard Module and the 204 Quad Spatial Director. If you have the funds, go get them as this is a once in your lifetime opportunity.
284 Quad Voltage-Controlled Envelope Generator Model:
Adds voltage control and variable delay and duration times to the
capabilities of the Model
280 (Four independent envelope generators with variable attack and
decay times (range is .001 to 10 seconds) and a choice of sustained or transient
operation. Input pulses initiate envelopes and optionally control duration time;
output pulses, activated at end of decay, are particularly useful for advancing
sequencers or looping to inputs to generate repetitive functions.).
All
times are internally variable from .002 to 10 seconds; control voltages may be
used to extend this range and control overall time while preserving envelope
shape.
237 Polyphonic Keyboard Module:
This keyboard provides the musician with the means to achieve direct
expressive control of the Electric Music Box's many voltage-controlled
parameters.
Model 237 has 37 keys (3 octave) and 3 voice polyphonic
outputs; built-in processor allows polyphonic output voltages to be
transposed or modulated by applied signals and control voltages.
Model
features velocity and pressure outputs. Velocity output voltages are
proportional to initial striking force; pressure outputs are actuated by
applying pressure at bottom of key travel.
Key voltage outputs are equal
interval -- any equal-tempered scale may be readily tuned with the processing
and offset controls built into Electric Music Box oscillators.
204 Quad Spatial Director:
Voltage controlled quadraphonic distributor for determining the spatial
location of sounds with pan pots or externally applied voltages. Monitor
switches and voltage controlled attenuators are included.
The 204s features include:
4 electronically isolated 2-dimensional joysticks with output voltages
proportional to lateral and vertical displacement. Generally used to control
sound location, but may be used to control other parameters. 4 gain controls for signals applied to inputs. Control voltages may
alternatively be used to control amplitude.
Control voltage inputs for defining positions of sounds. Increasing voltages
move sounds from rear to front and from left to right. Voltages are generally
(but not necessarily) derived from adjacent joystick outputs.
Go to
ebay to see the rest of the modules.