MATRIXSYNTH

Vintage Solina Arp String Ensemble

via this auction

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Roland MPG-80 programmer for Roland MKS-80 Super Jupiter

via this auction

See the seller's other items for more.

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SEQUENTIAL CIRCUITS PRO ONE SYNTHESIZER

via this auction

SN 4791

This is the one in this recent post.

JUNOST-21 Vintage Soviet Analog Keytar

via this auction

"Junost-21 is a portable polyphonic keyboard EMI. A player can hang it on a shoulder. Timbre of sound can be changed in accordance with players desire by the use of controls or choosing one or 12 programed timbres with digital indication of chosen one. You can get a variety of interesting warm analog sounds when cut off the presets and shape the sound by controls ( filter, envelope, modulation etc.). The instrument changes sounding during playing composition using such effects as chorus, unison, transposition with continuous and coarse control, frequency and timbre vibrato with continuous frequency, depth and delay time control, fixed and dynamic change of timbre, attack and fading of sound.

Sliders on the main synth body: LFO depth, speed, delay, routing to filter or VCO. Presets: three banks of four. Two-digit LED. VCF and VCA each with AD envelope.

Controls on grip: volume, tuning and chorus.

CONNECTIONS: Line Out on a standart 1/4 mono Jack adapter; 5Din power supply socket.

Specifications:

Formation of envelope in volume with attack and fading duration control.

Formation of envelope in timbre with attack duration control, fading, level and depth of timbre control.

Frequency and timbre vibrato in depth, frequency, pre- delay control.

Transposing on an octave (continuous and coarse)

Tuning of the musical range.

There is a filter with continuous range, depth and sharpness control.

Possibility to control cutoff frequency of filter by the keyboard.

Fixed choice of chorus and unison sounding.

Volume control

Number of octaves in a keyboard (from "F" to "E") 4

In audible range 6

Number of programmed timbres 12

Power consumption max 11V*A

Dimensions

- without power unit and case max 85x260x860 mm

- in case max 130x330x945 mm

Weight

- without power unit and case max 6,5 kg

- in case max 13 kg

Amplitude output max 2,4 V

Signal/(Backgound+noise) in a pause max 55dB

Relative frequency instability of leading generator over 4 hours of working max 0,3 %

THE SET INCLUDES
All original factory set - synthesizer, power supply, manual with schematics, strap and hard case."

SN 16100

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Korg MS-20 Vintage Analog Synthesiser

via this auction

SN 147577

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MO-tron 2

YouTube Uploaded by Kaseo on Aug 2, 2011

"MO-tron 2

MO: Motor Oscillator

photo:
http://pikaseo.tumblr.com/post/8379686121/mo-tron2
http://pikaseo.tumblr.com/post/8379710681/mo-tron2

Dedicated to Yonemoto Minoru and Yuichi Onoue"

Monotribe has MIDI out hidden inside

YouTube Uploaded by Gameboygenius on Aug 3, 2011

"Someone suggested the "serial" connector on the Korg monotribe might spit out MIDI signals. That person was right!

Discussion on Muff Wiggler forums: http://www.muffwiggler.com/forum/viewtopic.php?p=531711#531711"

via nitro2k01:

"CONFIRMED! It is actually spitting out proper MIDI on the serial line! It gives you the following:

Note data.
MIDI sync, incl. start and stop messages.
Automation data for all of the LFO settings (both the knobs and the switches) and the EG shape. This suggests that the LFO and envelope may be created in software.

I have not yet hooked up an optocoupler and fed the thing MIDI from the other end, but I will. Shorting the serial out and serial in ports glitches the thing, so it most probably is capable of receiving MIDI.

Here's the pinout for the pin connector marked serial on the board.
Code:
CN12 MCU
1 Pin 20 PH0, TB0IN0, /BOOT
2 Pin 12 RXD0
3 Pin 11 TXD0
4 Pin 9 Vdd (3 V)
5 Gnd
6 Pin 29 PF6/SCK1

I believe this header was intended for factory programming of the firmware. When pin 1 is held low, the MCU enter a special programming mode, according to the datasheet. Pin 6 goes is routed up to somwhere near the power switch and is probably used to detect when a unit is turned on to begin the programming.

CN13 (which comes with no connector attached) would be used for debugging, but it is likely that debugging is disabled so you can't dump the firmware etc. Still haven't looked into that. (I don't have JTAG tools readily available, so...)

But what we're interested in is pins 2-5. Pin 2 is for receiving MIDI. Pin 3 is where MIDI comes out. If you're going to try to add an optocoupler, you'll also need Gnd and Vdd.

MIDI is a current loop protocol, so 3.3 V is no problem for standard MIDI gear given that you adjust the output resistors accordingly. Following the standard MIDI convention, I connected 3.3V and the output as usual, but replaced the usual 220 ohm resistors with 150 ohm ones. Works well enough.

I also got an idea: If the monotribe can receive MIDI, that may open up the possibility of throwing the internal oscillator out the window and using the it as a self-tuning MIDI CV interface for modulars. However, I've found that at least my monotribe tracks badly and sometimes drifts a little. This is especially obvious when comparing it to a well-tuned computer playing the same MIDI notes. Also, it's using just 5V internally for the analogue part (3.3V for the digital) and the CV range may be even less, so perhaps it wouldnn't be of much use for 1 V/oct systems.

More to come..."

New Modules from Curetronic

Clock Sequencer - ADSR
Attenuator - Dual SH
Quad VC LFO - Multiple
Quad Decay - Dual LFO
Quad Probability - VCF 121 LP
Quad VCA - CV Phaser
Dual Mixer - Dual Ring
Tool One - Divider
VCF 3379 - Switch
VCF Stonehenge - VCA
VCO - VCO Light
Quint LFO - Digi Noise

curetronic

BugBrand's Solar Powered Modular - Reflecting Four Years Later

"Four years ago I'd been DIYing modular stuff for a year or two at least and was having a lot of fun - but then I was faced with the challenge of how to take a system to Europe (on Easyjet). I ended up building this (built to the Easyjet musical instrument carry-on dimensions - of course, flying from the UK they totally DIDN'T let me carry it on...) and performed a 4am wobbly-techno set by a lake near Berlin for the Goldmund Festival - it was great."

See the full post on the BugBrandBlog