MATRIXSYNTH

Wurlitzer Sideman

Title link takes you to shots via this auction.

Details:
"Hi. Up for auction is an early example of drum machine technology. The Wurlitzer "Sideman" was manufactured from 1959-1965 Please check out these links for more info:
120 Years
Synthmuseum"

Oberheim Matrix-12

Title link takes you to shots via this auction.

dinosaurs and drum machines

YouTube via cretin4321. SWIFT (cool stuff)

Swift 606 circuit jam

YouTube via cretin4321.

"tr-606
speak & spell
vactrol pattern synth

http://www.swiftfoxsystems.net/
http://cliplead.blogspot.com/"

ARP Little Brother

via this auction

ARP Odyssey

Title link takes you to shots via this auction. These are some really nice and varied shots including the manual.

ARP PRO/DGX

via this auction

Details:
"The Pro/DGX is a thirty preset monophonic analog synth based on the Pro-Soloist of the 1970's. The main difference is that the Pro/DGX had electronic switching (touch buttons) between its preset sounds whereas the older Pro-Soloist had circuit-based switching (rocker switches). It has 30 preset sounds to choose from, including Flute, Bassoon, Brass, Fuzz Guitar etc. Other features included pitch, portamento, vibrato, growl and wow effects. The keyboard has 37 keys with aftertouch sensitivity for volume, brilliance, vibrato, wow, growl, and even bend effects..." And, you can find the rest on VSE, where the details appear to have been pulled.

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Modulus Electronics Monowave

via this auction

Via the official MonoWave site:

"The Monowave was the brainchild of UK electronics designer, Paul Maddox. Paul has been designing and building synths for years as well as releasing his own unique music realised on his impressive modular creations. Paul wanted to build a synth the roots of which lay in the PPG. Originally intended as a monophonic bass synth, the Monowave has uses beyond that. The Monowave is a wavetable synthesiser with 256 waves available for each of the two oscillators. Each oscillator also has a sub-oscillator. The filter is a copy of the Moog filter, there are separate envelope generators for the filter and amplifier, and a simple LFO. The panel is very 'retro' and 'traditional' with knobs for every function and a simple display. Internally, the circuitry is all analogue (except for the digital circuitry used in the oscillators)... no wimpy DSP thank you very much - this is a 'real' synth!!

Paul has now released the MonoWave as GPL and has given me permission to release the PCB and a Component Kit for those that unfortunately missed the first, limited run. I have decided to upgrade the main microcontroller to the newer ATMEGA32 which will allow developers to further extend the capabilitites of the design should they wish."

You can also find a write up on Vaco Loco.

Oberheim Eight Voice System

Title link takes you to shots via this auction.

Some Details:
"This is not a single synthesizer, it is eight mono synths under the control of one keyboard. The keyboard can be split into 2+6, 4+4, or 6+2 voice combinations. You just can’t buy something like this anymore, at any price. It deserves to be brought back to life. Complete schematics and manuals (copies) are included. Synthesizers of this era are not full of custom IC’s, but stacks (and stacks) of good old fashioned circuit boards filled with off the shelf diodes and resistors. Please don’t cannibalize something this majestic and rare for parts. This Keyboard cost $10,200.00 new. A new Corvette of the same era was about $7500.00. Only the elite could afford such a monster. This particular Obie has a pedigree of its own, which will be made known to the buyer, but due to lack of documentation is not part of the listing."

If anyone finds out what that is, please post back.