MATRIXSYNTH

Roland TR-808 Rythm Composer with Original Box

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Roland Jupiter 8 with Encore MIDI

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"Roland Jp 8 14 bit model with Encore 5.2 MIDI in out."

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"Roland TR-909 Rhythm Composer Drum Machine, ser. # 415775. Only 10,000 of these monster boxes were made. This is the awesome sound of house beats, techno, and dance music. Used by Chemical Bros., Moby, Sound of London, 808 State, and many others.

Sounds are: kick, snare, hand clap, open hat, closed hat, low tom, mid tom, hi tom, rim shot, ride cym, crash cym. All sounds can be modified in attack, tone, tuning, decay, snap, accent. Includes manual and power cord."

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ROLAND JUPITER 4 VINTAGE SYNTHERSIZER

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Aelita vintage 3 VCO Soviet analog synthesizer

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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

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"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