Guido Stolfi's Vintage Analog Modular Synthesizer - Brazil 1974/1975

Details in Portuguese here, Googlish here.


"The synthesis system sound (tone generator) was based on a panel of 16 slide switches, through which it was possible to "draw" the waveform. The positions of the keys were encoded in 4 bits per pixel, and could be stored in memory. This allowed quick access to various preset voices, during operation.

Then, the keyboard was developed. We left 12 LC generators individually tunable, which were selected and divided by the circuit of the keyboard, resulting in a final frequency that was sent to the tone generator. The oscillators used diodes "varicap" and accept an input of frequency modulation to provide vibrato.

Keys, wood, were achieved by Celso in Diatron (factory electronic organs). The contacts were taken from telephone relays.

To allow "glissandos" and behavior, we developed an innovative circuit "Phase Locked Loop" control exponential VCO. Thus, it was maintained the accuracy and stability of digital oscillators but providing linear behavior musical scale (logarithmic).

The other processing modules (filters, VCA, envelope generators) were basically analog, can receive commands from a computer via D / A converters for general use..."

via modular.br on Facebook

Old school Tribal House with TR 909, TR 727, Juno 60, and Midiverb

Published on Jul 5, 2013 SynthMania·254 videos

"A quick live jam in the early '90s Tribal House style."

YAMAHA CS01 SYNTHESIZER SN 37651

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via this auction

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Original Doepfer Dark Energy Synth

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via this auction

"Dark Energy is a monophonic stand-alone synthesizer with USB and Midi interfaces. The sound generation and all modulation sources are 100% analog, only the USB/Midi interface contains digital components. Dark Energy is built into a rugged black metal case with wooden side plates. High quality potentiometers with metal shafts are used and each potentiometer is fixed to the case (no wobbly shafts and knobs)..."

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S-CAT (0742) CIRCUIT BENT CASIO VL-1 with 10-MODs

via this auction
S-CAT on eBay (RSS)


Video of an older one at the auction and below.

"1 0 - M O D I F I C A T I O N S

1. Rhythm Filter
2. Rhythm Squanker
3. Voice filter 1
4. Note repeater
5/6. Squanker hi/lo
6. Voice filter 2
7. Voice drive
8/9. Rhythm Drive I/II
10. Pitch modulator

OPERATES JUST AS THE MAKERS INTENDED WHEN ALL OF THE MODS ARE OFF"

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Simplesizer – ein analoger DIY Synthesizer CV/Gate

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via this auction

"For sale is a Simplesizer - a DIY analog synthesizer developed by Thomas Welsch.  The external control functions via CV / Gate by Roland Standard (5V/Oct)... "

I believe Thomas Welsch is the man behind Anyware Instruments and the Tinysizer.

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Do you know (with Elektron Analog Four, Octatrack, Maschine)

Published on Jul 5, 2013 Khantipol Kasemsant·229 videos

"Do you know (with Elektron Analog Four, Octatrack, Maschine Mikro Mk2)
Vocal Sample from ภาพความทรงจำ by Tuniez83"

Maschine on eBay
Elektron on eBay

Sonic Poison LXR Drum Machine - 1st test

Published on Jul 5, 2013 Trooper Starship·9 videos

"Today my new drum machine LXR arrived, this is a first test-jam where i tried out some functions and only playing around with other synths... so no real music here, sorry :-)"

I believe it's Sonic Potions LXR. See the Sonic Potions label below for more.

iOS MARS - Nave Preset Bank

Published on Jul 5, 2013 RyanHemeon·78 videos

"This is just a quick demo to preview the sounds in my Nave preset bank. When I first got Nave I found most of the presets weren't my style at all, I started making patches to get the sounds i wanted and thought I'd share them with you. All the presets are made with custom wave files and are centered around Guitar and Bass mutations.

Please visit www.iOSMARS.com for the download."

iTunes:
Nave - Waldorf Music

PT-Audio Dual Digital Oscillator demo

Published on Jul 5, 2013 Stephen Drake·38 videos

"*WARNING* - most of this video features audio direct from this digital oscillator, some of which has LOTS of high frequency content - set your monitor/headphone levels safely!

This is a demo of some of the features and abilities of the PT-Audio Dual Digital Oscillator. This is a deep module - even at 22 minutes I only scratch the surface of what it can do. In actual usage, attach some envelope generators or slopes to the various cv inputs, and magic starts to happen!

This isn't a commercially available device, currently. If you have synth DIY skillz, you can build one now, or possibly find someone who will build one for you. For more on this device, see http://www.muffwiggler.com/forum/viewtopic.php?t=70449 or possibly http://synthcube.com/

The sounds at the beginning of the video are the DDO being driven by the Klee sequencer, and going through an Eventide Space, nothing else involved. Once I start the mode demos, the Klee and the Space are taken out of the signal, all you're hearing is the DDO directly. Only other modules used are a MOTM 390 LFO and a CVP to raise the lfo signal so it's all positive voltages.

Sorry about the excessive length of this video - I was having too much fun playing with the various modes - I thought I could get it all in under 10 minutes, but it didn't work out that way."