MATRIXSYNTH

ROLAND JUPITER 4 VINTAGE SYNTHERSIZER

Aelita vintage 3 VCO Soviet analog synthesizer

via this auction

SN 7981 99 03

"Vintage fliptop mono with rare midi input mod... in fact, it's the only one with midi I've ever seen! Really killer obese sounds with some of the best VCOs I've heard. Obviously influenced by the Minimoog in a lot of ways but radically different in others, it has a really unique unison/crossmod mode that is unlike anything Moog."

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Firstman SQ-01 Sequence Synthesizer

via this auction
"The Firstman SQ01, manufactured by Multivox, is said to pre-date the Roland TB-303 and has a deep analogue bass sound somewhere between the 303 and a Moog bass. The controls (left to right) are: Tempo, Release, Bar, Filter Cutoff Frequency, Filter Resonance, Oscillator Fine (tune) and Oscillator Frequency, Sustain and Power/Volume. Connections at the top rear are: DC12V in, CV in, Gate in, Clock in, Footswitch, Synchro out, CV out, Gate out, Clock out and Audio out. These connections really add to the fun-factor when hooking up with other analogue gear, or use a midi-cv converter to control it via midi."

Snow Fall - EMS VCS3 Filter Clone

via AMSynths

AM8071 Module - "Snowfall" Diode Low Pass Filter

"During the exceptionally snowy weeks of early 2010 I built a redesigned version of this classic filter which was used in the EMS VCS3 and AKS synthesizers in the 1970’s. With snow falling and the wonderful bubbly sound of the filter, I named this module - Snow Fall. It was a 4-pole diode ladder low pass filter using all discrete and rather old components. The Roland SH-3 filter (AM8003) and PE Minisonic 2 (AM8050) filters are close copies of this legendary design.

EMS originally (in 1970) described the filter as Low Pass and with a cutoff rate 12dB for the first octave and then 18dB per octave thereafter, with band pass filter response at medium Resonance levels and a maximum Q of 20. From early 1974 EMS updated the filter with an extra capacitor at the base of the diode ladder to provide a steeper 24dB per octave response, this appears to have changed the character of the filter. The filter frequency response is stated as 5Hz to 10kHz.

In terms of electronic design the standard filter is 4-pole but the characteristics of diode ladders makes this sound more like 18dB, and the 24dB version is really 5-pole. No matter, the filter sounds fantastic....

Visit the AMsynths web site for the full story here..." You will find samples there as well.
Be sure to see the rest of AMSynths for more DIY clones and projects.
via VICMOD

M-Audio Venom Demo by Khoral

via Khoral's Cafe 80

Khoral comments on the Venom's lack of access to all editable parameters via the hardware synth itself. If you are thinking of a Venom, be sure to read my review. I opted for a custom iPad TouchOSC template to get around the limitation. If you are accustom to working with a computer the Venom does come with a full blown editor.

SpiderWorker (M-Audio Venom Demo) by khoral

noise box

YouTube Uploaded by drmoonstien on Mar 27, 2011
drmoonstein on eBay

Update:

optical space theremin

Uploaded by drmoonstien on Mar 27, 2011

DUB CAT DUB SIREN by S-CAT

YouTube Uploaded by PHONICPOTION on Mar 27, 2011
S-CAT on eBay
"CIRCUIT BENT DUB SIREN WITH BUILT IN ANALOGUE DELAY"

THE DISINTEGRATION DELAY by S-CAT

Moog Little Phatty Stage II - "Red Dimension"

YouTube Uploaded by synthypnosis on Mar 27, 2011

"VELVET VOYAGE - "Moog Little Phatty Stage II - red dimension" - Recorded on 2 stereo-tracks in January 2010 by Bruno Ender Lee
...my first recordings with the Moog Little Phatty...taken from the CD "Live in space""

Arturia ARP 2600V - ...les dunes du Pyla 1...

YouTube Uploaded by synthypnosis on Mar 27, 2011

"VELVET VOYAGE - "Arturia ARP 2600V - les dunes du Pyla 1" - by Bruno Ender Lee, every sound was made with the Arturia ARP 2600V, taken from the CD "Mindsong" 2005 ...with some holiday-pictures from France..."

Squidfanny - circuit bent YAMAHA PSS-100

YouTube Uploaded by squidfanny on Mar 26, 2011
squidfanny on eBay
"Really nice little Squarewave Synthesizer from 1988. . . Bleep-Core Drums, Programmable Instruments and a little Sequencer.

Precision Oscillator provides pitch modulation, as well as LFO, 3 x Phat Bass / Screaming Feedback Oscillators, Glitch Knob and an Array of Glitch Buttons for generating random sounds, drum loops and abstract analog soundscapes.

Note the big flashing red Glitch button which indicates LFO rate.

As usual, wicked metal keys in lot's of shiney reflective colours."