Electric Music Store - 257r (Buchla Format)

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via NOISEBUG Reverb



"This module is in great shape and fully functioning.

257r - Consists of two identical sections, each of which permits several applied control voltages to define a single output voltage according to the equation: V_a K + V_b (1 - M) + M * V_c + V_offset = V_out

The algebraic manipulations possible with this module include addition, subtraction, scaling, inversion, and multiplication. Also incorporated is the capability of using one control voltage (M) to transfer control from one applied voltage (V_b) to another (V_c)."

Additional 257r posts

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Pantribal Sodality

Published on Apr 29, 2019 zack dagoba

"I have finally finished my 200 cabinet (for now - I think I want to add a few more modules at some point but this is enough to be getting on with)

Modules: 208r Stored Program Sound Source, 218r Touch Keyboard Controller, 281r Quad Function Generator, 261e Complex Waveform Generator, 248r Multiple Arbitrary Function Generator + Expander, 124b Patchboard / Power Switch, 277r Signal Delay Unit, 257r Dual Voltage Processor

See https://myblogitsfullofstars.blogspot..."

Buchla Skylab 200e 200r Full System with Extra Modules

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via this auction

"Skylab Case w/ Power supply and Skiff for the 223e touch plate. (no padded case and the button strap is somewhat long, but not a huge deal).

Modules:
250e Arbitrary Function Generator (sequencer)
259r Complex Waveform Generator (dual oscillator)
158r Sine Wave Generator (dual oscillator)
292r Quad Lo Pass Gate (filter gate)
281r Quad Function Generator (envelop generator)
266r Source of Uncertainty (noise, random cv generator)
257r Dual Voltage Processor (voltage processing)
222e/223e Touchplate keyboard and programming module
618 Vedic Scapes Metatron (essentially a Benjolin in Buchla format, includes oscillator and filter)
Module Module enclosure including the following mini modules: joystick, uStep sequencer, attenuverter, mults

Cables:
Pomona Banana Cabes:
2x Blue 36"
1x Green 24"
1x Black 24"
3x Black 18"
3x Brown 12"
1x Red 8"
1x Yellow 8"
2x Red Shorting Bars
2x Black Shorting Bars

Lot of Orange/Black DIY banana cables--not the best, but useful if you need them.

Lot of TipTop stacking 3.5 cables--probably enough for most patches."

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Buchla 257r Synth Module

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via this auction

DIY clone of the Buchla Dual Voltage Processor Model 257 by Roman Filippov, the man behind Black Corporation.

You can find some demos of the 257r here.

CV Conversion via 257r Buchla DIY

Published on Sep 16, 2015 djangosfire

"Very quick example of using a 257r Dual Voltage Processor module to convert and scale 1V/oct CV from a Serge... into a 1.2V/oct Buchla format scale.

It works - it's easy - just don't bump your knobs !! :)

Cheers!
- Adam"

Buchla 200e Synthesizer System for Sale

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via this auction

"All 200e modules have the latest firmware. The system includes the 12U folding boat and power supply. The 159e needs some wavetables added back in but I'll include the Buchla firmware card to handle that and all future upgrade needs.

This system is priced at aprox $18000USD/$21000CND new value. Get it here for much less.
The list of modules in this amazing system includes:
161e Complex Waveform Generator
259e Twisted Waveform Generator
296e Spectral Processor
291e Triple Morphing Filter
250e Arbitrary Function Generator
266e Source of Uncertainty
281e Quad Function Generator
285e Frequency Shifter/Balanced Modulator
292e Quad Dynamics Manager
257r Voltage Processor
201e-12 Boat"

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Buchla DIY 257r Dual Voltage Processor Overview Demo

Published on Jun 30, 2015 djangosfire

"A general overview and demo of the 257r Dual Voltage Processor Buchla format module. Hope this helps - Thank you! - Djangosfire"

Dual Voltage Processor Model 257r in Buchla-format

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via this auction

"Buchla compatible Buchla compatible Dual Voltage Processor Model 257 clone
works as it should, fits in any 200/200e boat

this in NOT an original Buchla module, but it's compatible with the Buchla modular system"

Portable Buchla 200r System With Case Previously Owned by Richard Lainhart

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via MATRIXSYNTH CLASSIFIEDS

1x powered B&A boat with rack ears
2x unpowered B&A boats with rack ears
12U SKB case (previously owned by Richard Lainhart)
2x 259r Programmable Complex Waveform Generators
1x 296r Programmable Spectral Processor
1x 207r Mixer / Preamplifier
1x 257r Dual Voltage Processor
1x 266r Source Of Uncertainty
1x 292r Quad Lopass Gate
1x 281r Quad Function Generator
1x 291r Dual Bandpass Filter

Buchla Touch Keyboard Arp Action

Published on Jan 29, 2014 djangosfire·166 videos

"Attack of the Buchla 218e Touch Keyboard Arpeggiator!

Modules used in this patch:

- Buchla 218e Touch Activated Voltage Source
- 266r Source of Uncertainty
- 2x 257r Dual Voltage Processors
- 259r Complex Waveform Generator
- 281r Quad Function Generator
- 292r Quad Lopass Gate
- 277r Signal Delay
- 227r Mixer

Thanks!
- Djangosfire"