MATRIXSYNTH

via this auction

inside a Sequential Circuits Six-Trak

"The Six-Trak was released by Sequential Circuits around 1984 (Model 610).
It is a 6-voice, Polyphonic, Multitimbral, Programmable Synthesizer that has MIDI, a built in Sequencer, an Arpeggiator, and a 4-Octave (C-C) keyboard.

The Six-Trak was one of the first multitimbral MIDI instruments designed to be used with a computer with software that was available for the Commodore 64. The software allowed programming of the six voices and the sequencing.
Along with the DrumTraks drum machine, SCI claimed that with the software and this synth that it was a complete MIDI system.

Each voice can be programmed to any of the 100 internal patches and played as a separate monphonic synth. It can be played either by the external keyboard controller or an external sequencer as well.
The Curtis CEM) 3394 chips were used for each voice which contains one VCO, VCF, VCA, and LFO for each. The VCO has fine and course tuning, glide (portamento) as well as saw, triangle, and pulse (with pulse width modulation) waveforms.
Each Oscillator can be mixed with a noise generator as well and the filter section features controls for Cut-Off Frequency and Resonance.

You can also set the key follow modulation to full, off, or half.

The filter is also self-resonating and can be modulated by each oscillator.

Each voice contains an ADSR Envelope for each the VCO, VCF, and VCA.

The LFO can be routed to the VCO, VCA, and PWM and consist of such waveforms as square and triangle.

There is a single data entry knob used for programming and all the programming is done through menus. However, you can select the knob to control such things as frequency cut off and effect the filter as you play.

You can choose between Polyphonic (with portamento), Unison, and Stack modes (which allows each voice to be set to a different patch and played as one complex mono sound. Mono and Stack modes are selectible between single and multi-triggering modes as well.

The Arpeggiator can be selected as Up, Down, or Assignable (which plays the notes in the order that they were played).

The keyboard can also be split into three areas.

The Pitch-Wheel is fixed at a range of a Mjor 3rd up and a Minor 3rd down.

The Modulation-Wheel controls the LFO amount.

All of the sequences and patches can be backed up via MIDI

The Six-Trak features an 800 note sequencer and 100 patch locations.

The rear of the synth consists of MIDI IN and OUT, a stereo audio jack which doubles as a headphone jack, a footswitch for sustain, and an accessible fuse f it were to ever blow.

The overall size of the Six-Trak is 28"x12"x4 1/2" and weighs approximately 18 pounds."

CLICK FOR MORE »

Baldwin Theater Organ with Synthesizer

via this auction
"Baldwin's Fantasia Organ has two full-sized keyboards and a full pedalboard. It has a synthesizer for the top rank (keyboard), which enables you to make sounds that you can create like a helicopter or a railroad train. The Organ, which has Leslie revolving speakers on the side, has a percussion unit and a learning tape cassette recorder with 12 lessons on tape and a lesson book and song book."

Casio CZ-101

images at this auction

Korg Kr 55 Rare Vintage Analogue Drum Machine/juno 106

YouTube via abertronic
"This is the korg kr 55 drum machine synced up to a juno 6."

images at this auction

"link to the manual"

Yamaha MR 10 Rare Analogue Vintage Drum Machine

YouTube via abertronic

images at this auction
"Yamaha mr10 vintage analog 1981 drum machine
This is very cute 5 pad analogue drum machine .This item for sale is very clean just normal wear and tear.100% working order but trigger pad for the bass drum is sometimes too sensitive and the snare drum also triggers the High tom (see the youtube video)
Trigger pads for bass drum /snare/High tom/ low tom /cymbal .Separate adjustable volume for Bass drum and cymbals . Tuning for toms and cymbals. 12 patterns with variations 4bar/ 8bar .
This would be the perfect machine for circuit bending as it runs off batteries .
link to manual
this is also interesting

Yamaha SK15 Symphonic Ensemble Vintage Analog Polyphonic Synth 1980

YouTube via abertronic

images at this auction

Access Virus TI

images at this auction

2006. That makes it nearly three years old.

Bagunça - Digital Set

flickr by Vida Extinta

full size

"coisinhas que não largo por nada! :)"

Bitnotic VX-323 Voice Synthesizer

"What is VX-323? A MIDI-controllable voice synthesizer application for Mac OS X 10.4. Use it as part of your digital recording studio or as part of your live rig. Compatible with all Mac OS X sequencers, audio editors, and controllers!"
http://www.bitnotic.com/ - samples on site.