MATRIXSYNTH

Oberheim

flickr By ruk777

Update via sunshine in the comments: "Here is the circuit [link]" Added below.

YouTube via neospheres | January 11, 2011

"Processed with Lexicon 224 program #5 'Percussion Plate'.

Please note: this is a just drum machine and doesn't come with any Michael Jackson basslines." [watch the full video]

via this auction

"The machine is fitted with ZIF sockets for easy swapping of EPROMs (I did own a Prommer at one point) and evidently I have swapped some chips around as the 'clap' is on the 'sidestick' and 'sidestick' is on the 'cowbell'. An SCI Drumtraks kick sample is on the 'Clap'. I obviously had the need to have two kick samples rather than the cowbell - which I didn't feel the need for. I think I still have the Cowbell EPROM lying around (and maybe some other programmed chips) but I can't guarantee that I will find them. Please note that, as shown in the video, I was unable to get the Hi Conga to work. I am fairly sure this is down to the slider in the mixer section which may have come away from the track - it should be an easy fix. This machine is retro-fitted with the JL Cooper Midi interface. I haven't tested the MIDI functionality but I assume it to be working."

Sequential Circuits Prophet 5 rev 3.2 SN 1678

YouTube via neospheres | January 09, 2011

via this auction

"This is an FX Music Control restored synth and passed through their workshops in July 2002. The synth was serviced by James Walker who was head tech at FX before starting Synth Repair Services."

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Sequential Circuits Pro One

via this auction

"This has the better J-Wire keyboard fitted which is far more reliable and easy to fix and service should you have to do any repairs or service in the future

Work just done
* Keyboard removed and cleaned
* All J-wires cleaned with deoxit gold and alligned
* Contact bars polished with deoxit gold
* Every key rubber bushing removed and replaced with a brand new set

* Every key re-lubricated with correct grease
* All slide switches and pots cleaned with deoxit
* Complete factory spec set up
* DAC scale reset
* VCA levels reset
* OSC A & B retuned and set
* All tantilum capacitors removed and new types fitted
* Power supply voltages all tested"

Sequential Circuits TOM Drum Machine Vintage Model 420

via this auction

Synthrotek's Magic 8 Step Sequencer with CV Out

via this auction

"- CV output (with trim voltage pot)
- 8 steps
- Clock input and output (let the trigger on our drum machine move the steps in time!)
- LED timing indicator for both the internal and external clock
- Tempo control
- 8 Step reset switch, allowing you to resent the sequencer from steps 1, 2, 3, 4, 5, 6, 7 or 8!
- Rugged CASE (Hammond Style metal case)
- MADE IN THE USA by synthrotek.com (1 year warranty FREE)"

previously posted here

KORG POLY-61

via this auction

"Includes the keyboard, soft padded case, owner's manual and sound data cassette tape."

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Korg PS900 Preset Synthesizer

via this auction

"Sounds: Timpani, Electric Bass, Synthe Bass, Piano, Harpsichord, Shamisen, Banjo, Mandolin, Xylophone, Tuba, Bassoon, Horn, Cello, Trombone, Saxophone, Voice, Clarinet, Accordion, Trumpet, Funky Trumpet, Synthe Trumpet, Oboe, Violin, Recorder, White Noise, Scale Noise, Harmonics I, Harmonics II, Harmonics III."