MATRIXSYNTH

Roland GR-500 Vintage 1970s Analog Guitar Synthesizer

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YouTube Published on May 12, 2012 by WayneJoness

http://www.joness.com/gr300/GR-500.html
"The Roland GR/GS-500 paraphonic guitar synthesizer system was introduced in 1977, and it laid the foundation for the very successful Roland vintage 24-pin guitar synthesizers, like the GR-300 and GR-700, that would follow a few years later. The GR/GS-500 uses the same 24-pin cable as the later synths, and many of the control voltages, string outputs, etc. are the same across all the synths. The different systems are not 100% compatible, but can be engineered to work together with a few modifications. The GR-500 has five sections: guitar, polyensemble, bass, solo melody, and external synth."

Playlist:
Roland GR-500 Vintage 1970s Analog Guitar Synthesizer - Introduction and Review

Roland GR-500 Polyensemble Section - Infinite Sustain Engage! - "The first synth section of the GR-300 is the polyensemble. In the polyensemble section, each string is processed through proprietary Roland waveshaping chips to produce a variety of sounds. The GR-500 brochure describes the different polyensemble outputs with terms like "wood," "soft reed" "brass" and "strings." But to me, they sound like four different kinds of buzzy guitar. The Polyensemble has a three stage envelope, identical to the envelope generators in the bass and solo melody section. You have control over: attack, decay, and sustain. With it's polyphonic effects, and smooth envelope generator, the Polyensemble may be one of the most musical sections in the GR-500."

Roland GR-500 Solo Melody Section - True Monophonic Vintage Analog Synthesis - "The most ambitious section of the GR-500 is the Solo melody. The Solo Melody is built around a last-note played priority pitch to voltage monphonic synthesizer. There are two waveforms available, a 16' pulse width modulation wave, 8' pulse width modulation wave, and 8' sawtooth wave. The width, or duty cycle, of the pusle wave can be manuall set, or controller by either the LFO or envelope generator. The Solo Melody has the same attack, decay, and sustain envelope genetator as the bass and poly snsemble sections. In addition to processing the mono synth output, the -24 dB per octvae solo melody filter can also process the polysensemble output. This is a great addition, enabling use of the low-pass filter with polyphonic input."

Roland GR-500 Bass Section - Floor Rumbling Analog Bass - "The bass section represents the first real, pitch to control voltage synthesis in the GR-500. Like the polysensemble, there are multiple voices: Percussion, soft and hard. For me, this translate to percussive effects similar to the percussion simulation on a vintage Hammond organ, the soft sound, which is like an upright bass, and the hard sound, calling to mind a pick bass. Like the polysensemble, there is a three stage envelope generator."

Roland GS-500 Guitar Controller for GR-500 (Introduction) Features - "The GS-500 guitar synthesizer controller is a solid and hefty instrument. Even with substantial parts of the body cut away to accomodate the electronics, this guitar still weighs around 11 pounds. The retail price on the GS-500 was somewhere around $1,000 in 1977, which translates into around $4,300 in todays currency. So think of the GS-500 as being in the Paul Reed Smith category of guitars, or the high-end Moog guitars, and not a mass-produced instrument."

Roland GR-55 and GS-500 Performance Video - Vintage Analog Guitar Synthesis - "In this demo I use all four sections of the GR/GS-500 independently and together: Bass, Polyensemble, Solo Melody, and Guitar,"

Roland GS-500 - Demo Video with GR-55, VG-99 and BX-13-VX Guitar Synthesis - "I thought it would be cool to play the latest Roland guitar synthesizer, the GR-55, with the first Roland guitar synthesizer controller, the GS-500. I custom built a BX-13-VX for the GS-500, and did some quick demos. It works surprisingly well!"

Roland GR-500s on eBay

Buchla - Patch 25

YouTube Published on May 13, 2012 by batchas

"Experimenting with the 291e being sequenced by the pendulum/ratchet (monomachine master tempo).

Patch focus: 258v + 259e + 291e

Other modules involved: 256e, 250e, 281e, 292e, 210e, p/r, pulse balloon, slew, adsr, 266e, 206e. No effects."

L-1 SYNTHESIZER MICROCOMPRESSOR - Compact VC Compressor for Modulars

http://greenexpo.by/synth/
via Aleksei Laman on
The MATRIXSYNTH Lounge

"Features:

Adjustable by potentiometers Treshold, Ratio, Attack, Release, Makeup gain.

Reduction LED which lights when signal level exceeds treshold.

Treshold and Makeup can be controlled by CV. -+5V covers all pots range.

Hard/soft knee switch.

Two timing modes are available -- auto and manual. In auto mode attack and release rates are linked, and depend on the non-linear capacitor circuit. In manual mode, variable, independent adjustment of the attack and release dynamics are possible.

RMS, Peak or Automatic timing detector options.

Two CV outs. CV1 after RMS-level sensor and Treshold control. CV2 after all controls beforeVCA.

Sidechain send and receive to external sidechain processing.

Two Microcompressors can be linked in stereo pair by Stereo 1 and Stereo 2 jacks. Master/slave switch off controls on slave unit. Stereo 1 to link the two RMS detectors. Such coupling results in true power summing and a more euphonic behavior. Note that, when linking detectors in this manner, means to adjust for the +/-3 dB tolerance on each detectors' 0 dB reference level must be provided. Stereo 2 to send CV from master unit to slaves VCA.

PCB has buffered Meter out pads for connecting external compression indicator.

15V and 12V versions can be made, board has EURO, MOTM, Dotcom and Modcan power connectors.

PCBs are hi-quality 2 mm thickness, gold platted.

MUFFWIGGLER forum thread http://www.muffwiggler.com/forum/viewtopic.php?t=51622"

You'll also find a THAT218x Based Quad VCA-Mixer on http://greenexpo.by/synth/.

Slomoblo

YouTube Published on May 13, 2012 by UncertainMusicCorps

"Exploring the expressive use of an Eowave ribbon controller.
Ribbon is set to 1v/oct on CV1 and Pressure on CV2.
Pressure is then multied to Maths chan 1 to shape the pressure voltage and control the lead VCA as well as modulating various other parameters on the A-137 and E350 to vary the timbre of both the lead and aspects of the drone background.

Live, one-pass, unedited. Uncompressed audio available on my SoundCloud page."

Make Noise QMMG Videos

Make Noise QMMG filtering.mov

YouTube Published on May 13, 2012 by AudioCentralMagazine

"Same oscillator goes into two channels of QMMG; big deal of feedback filtering, first channel in high pass mode, second channel in low pass mode."

Make Noise QMMG Loop Enveloping.mov

Published on May 13, 2012 by AudioCentralMagazine

"Make Noise QMMG under control of two 4ms Pingable Envelope Generator(s); four different sound sources, one for each channel: two Doepfer A-111 VCOs, one Harvestman Piston Honda (with wavetable sweeping from Doepfer LFO), one LiveWire AFG. On the summed output, the usual TipTop Audio Z-DSP mono delay."

Roland MSQ-700 Midi Sequencer with Original Box

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via this auction

"The MSQ-700 is an 8-track sequencer that holds up to 6,500 notes that can be stored. Several functions of the MSQ-700 include a chain function, multi-track function, overdubbing and a merge function. Use it to control your TR-909, or Juno-60 or any other MIDI equipment. The MSQ-700 is compatible with both MIDI and Roland's proprietary DCB sync methods,although it can't do both at the same time."

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Roland TR-808 Vintage Drum Machine+Midi Sync Converter

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via this auction

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Roland CompuRhythm CR-78 SN 966601 with WS-1 Programmer

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via this auction

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Döpfner Synthesizer-System VMS Cards

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via this auction

Googlish:

"Hello I am offering here from the company building systems for self-Döpfner the construction of a inviduellen synthesizer system

6 boards-operation and built-in modules. Note the blank and the control system must have all tested

are partially populated boards are purchased worden.Also to proceed as to the case of a reorganization Werk.Prüfen

check measure, and so on. The mech. Panel construction and Equipping the proposal meets on the plan.

Note to 2 Voice boards are still missing a couple of IC's demand. Please Doepfner at Fa, because that can certainly help.

Delivery to board: 4 LFO modulation oscillators operate independently

1Rauschgenerator board noise

1SAMPLE and-hold unit S & H

3Voice card with 2 votes

Each LFO can-Freqenz waveform amplitude can be set with full bus voltage control.

This triangle, rectangle, are increasing and decreasing ramp available. Each LFO signal can be switched to 8 bus lines.

The sample and hold unit is used for sound sampling. Laying plans and 2 plates with bei.Vielleich you can raise even more this fals system would be interesting."