MATRIXSYNTH: Saturday, July 30, 2022

Synth Jam 89: Roland T8 Aira Compact

video upload by Marcus Padrini

Another embed missing the thumbnail. Just hit the play button.

"A Roland T8 é um instrumento compacto, que combina uma drum machine com timbres de equipamentos clássicos( tr808, tr909, tr707 e tr606) e um sintetizador de baixo no estilo TB303."

Building a Fairlight CMI: Episode 10

video upload by Syntaur

"Cris Blyth is a brave man. He has a dream of taking a Fairlight MFX and upgrading it to a Fairlight CMI Series III. In this episode, Cris works on the caps, SCSI2SD card, rack ears and hinges 3D printed!"

Building a Fairlight CMI episodes

Error Instruments Hacks the Behringer TD-3 - ER303 hackt 303 clone

video upload by errorinstruments paul tas

"We decided to hack the most famous and loved 303 designs by Tadao Kikumoto. In the 80s
40 years later Behringer makes a clone
We look at this circuit and we changing something and we add some chips
Inputs outputs.. we want to make it sound over the top if possible no limit. Most crunchy so we at and makes between an overdrive and a delay . We change the filter and we have an extra input in outfits for the effect that you can also use separated on other equipment if you want the demonstration. We only have 10 of them. If you are into Acid over-the-top crunchiness over-the-top delay this is your friend see demonstration movies"

FusionLab ION Synthesizer

video upload by Toine Scholtz

"A little video demonstrating the Ion, a digitally controlled analog monosynth that I built a while ago. All the music in the video was created using the synth only (sequenced from and recorded into Ableton Live).

I started sketching the concept for the synth nearly 10 years before I began the build, but had a great deal to learn about analog and digital electronics before I was capable of actually building it. I arrived at the final design around mid-2020, began the build late 2020, and completed it a few months into 2021.

The synth is controlled by MIDI over USB. I used a PJRC Teensy 3.1 microcontroller and several DAC ICs to generate control voltages.

The Ion has 3 VCOs, each producing a slightly different selection of waveforms, and a noise source with its own state variable filter. Each VCO can produce a pulse width waveform, and each has a dedicated LFO to control PWM. There are two main resonant VC filters, each with continuously variable responses between LPF, HPF, BPF and notch. The filter configuration can be continuously faded between series and parallel.

The synth has a main VCA with dedicated envelope generator, and each VCF has a dedicated EG controlling cutoff frequency. A dedicated LFO can control the frequency of one or all three VCOs. Three other modulation sources, an EG and two LFOs, can be routed through the modulation matrix, a two channel matrix with 7 sources and 8 destinations available on each channel. Each VCO output can be also used as a mod source, as can the noise source. The matrix destinations include VCO pitch, VCF cutoffs, and AM of one of the VCOs and the main VCA.

The synth uses a Doepfer DIY synth board, which provides one of the VCOs, one of the VCFs and its envelope generator, the main VCA, the pitch modulation LFO, and the slew limiter used for the glide control. All the remaining modules are either completely discrete or make use of dedicated synth chips.

The design of VCO1 is adapted from Thomas Henry's astoundingly good VCO-1. The second VCF derives from Thomas Henry's beautiful VCF-1 design. VCO2 uses the AS3340 clone of the classic CEM chip. One of the mod source LFOs is based on a very elegant Ray Wilson design, and the other mod source LFO and envelope generator (as well as the main EG and the EG modulating the other VCF) are build using the fantastic modulation chips designed and supplied by Electric Druid. The noise source is also based on the Electric Druid noise generator IC.

In practice, the synth architecture is predominantly subtractive, but the mod matrix means it's also possible to do basic FM, although that's fairly limited by there being only two mod matrix channels (mod matrices are difficult and expensive to implement).

The synth cost about 5 months of spare time, more money than I have the courage to calculate, and some intense stress and frustration in getting it to work properly. Debugging hardware is much more difficult than debugging software.

It was an amazing journey of learning, and I'm one step closer to knowing how not to build a synth. It also gave me an even more acute and humbling appreciation of just how astounding is the work done by the synth electronics pioneers, and indeed contemporary designers. I stand, diminutive, on the shoulders of many giants.

https://www.pjrc.com/teensy/
https://doepfer.de/DIY_Synth_e.htm
https://www.birthofasynth.com/Thomas_...
https://www.birthofasynth.com/Thomas_...
http://musicfromouterspace.com/index....
https://electricdruid.net/product/env...
https://electricdruid.net/product/vcl...
https://electricdruid.net/product/noi..."

EEH Zaunkönig Brochure Scan and Front Panel Pic

New pics added to this post, along with some history.

//2022KORG Gadget2//Fairbanks＋Glasgow

video upload by TKU 7900

It would be interesting if Korg ported these into physical synths.

Fairbanks
Hybrid Digital Synthesizer
Glasgow
Superior PCM Synthesizer

The intro sound reminds me of the intro in the Moog Mavis video directly below.

MOOG MAVIS MONOPHONIC ANALOG SYNTHESIZER - MASSIVE SOUND ! DRONE & TEXTURES #1

video upload by Another Machines

Ambient Synthesizer Textures with the Moog Polymoog, Oberheim OB-X and Yamaha DX-7.

video upload by Remco Rones

"I first made a track with the Oberheim OB-X and Yamaha DX-7 synthesizers and recorded this on cassette. Then I processed the mixdown with lowpass and resonator filters of the mighty Polymoog. Live take, no programming."

ReBirth RB-338 - Red Stripe Mod Demo

video upload by peff .com

"The Red Stripe mod for ReBirth RB-338 was a collaborative effort with Thomas and Wolfgang Merkle of Bitplant. This project was organized as a branding campaign in 1999, through the beverage distributors' UK marketing agency, 5emedia, LTD.

In order to establish the fast drum roll effects, the transport is set to run at 338 BPM, and two pattern slots are required to complete a full measure of 32 steps. I had quite a few keyboard shortcut hacks set up on my version of ReBirth RB-338 which helped me quickly work around these complicated pattern arrangements."

Behringer Poly D - 20 Free Sequences

video upload by LFOstore

"LFO.Store presents a gift for all owners of Behringer Poly D.

Download: https://lfostore.sellfy.store/p/behri...

20 amazing sequences for your Behringer Poly D

Enjoy! And may creativity be with you!"

Dreadbox Erebus V3 w/ Original Box

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via SYNTH CITY Reverb

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Yamaha DX200 Loop Factory SN HJ01540

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via this auction

"Physically, it is in very good shape (little bump under power connector - pictured). Functionally: the data encoder is glitchy, while every other knob is rock solid. Like most DX200's, the data encoder on mine became glitchy in the early 2000's, so I ordered a replacement from Yamaha, along with a spare. Since replacing it, it went glitchy again and I never got around to opening it up again. By glitchy I mean - turn it slowly and it mostly increments in the right direction - turn it fast, and it goes the wrong way randomly."

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Green Panel Tiptop Audio Z-DSP

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via this auction

"Tiptop Audio Tiptop Audio Z-DSP Eurorack module with rare Green panel from Magpie. Module only, no cards included. Module is in perfect working order. There are no cosmetic blemishes aside from rack rash."