Synovatron CV Tools Modules In Production

via Tone's
"CV Tools Specification
4-channel Polarizing Cascade Mixer
Channel 1
Input: 3.5mm jack IN1
Input impedance: 100kΩ (±1%)
Normalled input: VREF - jumper selectable to +5V, 0.5V-2.5V or none
Bandwidth: DC-16kHz (-3db)
Gain: LEVEL control variable 0 to ±2 (±3%)
Output: 3.5mm jack OUT1 - Normalled to Channel 2 output mixer
Output impedance: 1kΩ (±1%)
Output indication: ±LEDs
Channel 2
Input: 3.5mm jack IN2
Input impedance: 100kΩ (±1%)
Normalled input: VREF - jumper selectable to +5V, 0.5V-2.5V or none
Bandwidth: DC-16kHz (-3db)
Gain: LEVEL control variable 0 to ±2 (±3%)
Output: 3.5mm jack OUT2 - Normalled to Channel 3 output mixer
Output impedance: 1kΩ (±1%)
Output indication: ±LEDs
Channel 3
Input: 3.5mm jack IN3
Input impedance: 100kΩ (±1%)
Normalled input: VREF - jumper selectable to +5V, 0.5V-2.5V or none
Bandwidth: DC-16kHz (-3db)
Gain: LEVEL control variable 0 to ±2 (±3%)
Output: 3.5mm jack OUT3 - Normalled to Channel 4 output mixer
Output impedance: 1kΩ (±1%)
Output indication: ±LEDs

Channel 4
Input: 3.5mm jack IN4
Input impedance: 100kΩ (±1%)
Normalled input: VREF - jumper selectable to +5V, A-100 Bus CV or none
Bandwidth: DC-16kHz (-3db)
Gain: LEVEL control - jumper selectable to 2 (±3%) or 1 (set by RV7)
Output: 3.5mm jack OUT4 and Slew Limiter input
Output impedance: 1kΩ (±1%)
Output indication: ±LEDs
Slew Limiter
Input: 3.5mm jack IN
Input impedance: 1MΩ (±1%)
Normalled input: Channel 4 output OUT4
Slew range: TBD
Gain: 1
Output: 3.5mm jack OUT
Output impedance: 100Ω (±1%)
General
Dimensions
3U x 12HP (128.5mm x 60.6mm).
Power consumption
+12V @ 60mA max, -12V @ 50mA max, +5V is not used.
Reference voltage (VREF)
Jumper selectable at each mixer input. Channels 1-3: 5.00V (set by RV6), 0.5V-2.5V (set by RV8), Channel 4: 5.00V (set by RV6), CV from A-100 bus.
A-100 Bus utilisation
±12V, 0V, CV used; +5V and Gate are not used.
Contents
CV Tools Module, 200mm long 16-way ribbon cable, 4 sets of M3 cap head socket screws, nylon washers and a 2.5mm hex key."

Circuit Bent KORG KPR_77

YouTube Uploaded by magicmodulator on Apr 1, 2011

"Circuit bent KORG KPR-77 by mat the modulator England
bass drum pitch, zapp(p bend), decay
snare, pitch, decay, noise level
hi-hat and cymbal tone and decay controls
tom pitch
clap tone control"

SpectralWiz Revealed by Jordan Rudess

YouTube Uploaded by JCRUDESS on Apr 1, 2011

"SpectralWiz Revealed! Wizdom music enters the hardware business with a revolutionary product. Check it out..."

Jordan Rudess: Wizdom Music, LLC
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Yamaha CS01 II analogue synthesiser

via this auction

"includes the BC1 Breath Controller and original power supply... This mark 2 version features an improved 24db resonant filter (which self-oscillates) with adjustable slider control over resonance instead of switchable on/off resonance as found on the original."

Yamaha SK30 Symphonic Analogue Synth

via this auction

Siel Opera 6

via this auction

"It has 6 voices, each with two DCO's, which are detunable to give some fat sounds. Assign an LFO on the pulsewidth or DCO pitch and you have chorus.
It has 3 assignable LFO's
It has a resonant Voltage controlled filter on each voice.
It has a four stage envelope generator for the VCF and the VCA.
The MIDI responds to note on/off and velocity.
A good alternative to the Roland Juno 106 or Korg Poly 61M (neither of those were velocity sensitive)."



YouTube Uploaded by Orrsome1967 on Sep 3, 2008

"A quick demo of how to change sounds and save them on a Siel Opera 6 analogue polysynth"

KORG Mono/Poly vintage analogue synthesizer

via this auction

"Classic monophonic / polyphonic synthesizer. Play in poly mode for 4 voices, or else join all voices together in unison to make a nice FAT sound. Can also be triggered with cv and gate, and uses the 1v/octave system, so it is compatible with the Roland standard. Also has arpeggiator, can do cross modulation of voices, has a nice effects section, chord memory and heaps more."

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1974 Experimenting with Electronic Music, 1st ed.

via this auction

"Published the very same year electro-industrial pioneers Kraftwerk released their breakthrough album "Autobahn," here's a wonderful, rare book covering virtually everything you ever wanted to know about music synthesis and reproduction. Within its pages is an overview of the history of electronic music, from RCA's tube-based Mark I to modern solid-state synthesizers, with photos of the Minimoog and the Moog Sonic Six, as well as the Tonus ARP 2500, 2600, and Soloist consoles. For you tinkerers out there, the book also contains numerous construction projects, including two (2) separate transistorized theremins complete with detailed alignment instructions. All projects come ready-to-build with full schematics and parts lists.

Contents include:

Musical Electronics

History - Mechanical Tone Generation - Electronic Tone Generation - The Music Synthesizer

Sound and the Electronic Signal

Sound - Harmonic Motion - The Sine Wave - Additive Synthesis - Square Wave - Sawtooth Wave - Beat Notes - The Envelope - White Sound - Using the Complex Wave

The Instruments

Mechanical Tone Generators (string, wind, and percussive) - Experimenting

Microphone and Pickup Applications

Principles - Ceramic and Crystal Applications - Homemade Ceramic - Homemade Percussion - Dynamic Microphones - Magnetic Pickups - Homemade Magnetic Pickup - Condenser - Impedance

Building a Small Electric Organ

Tone Generation - General Construction - Tremolo Modulator - Mixer - Homemade Keyboards - Combining the Stages

The Electronic Modifiers

Tremolo Circuit - Envelope Control Circuit - Trigger Circuit - Attack Envelope Generator Circuit - Photoelectric Modulator - Reverberation - Chime Device - "Fuzz" Circuit - Sustain Circuit

Electronic Tone Generators

Multi-waveform Generator - Pink Noise Circuit - Two Theremin Projects - Automatic Percussion Circuit - The Almost Nightingale - Mini-Organ

Odds and Ends

Two-Channel Mixer - Three-Channel Mixer - Voice Selector - Variable Bandpass Amplifier - Active High-Pass Filter - Resonant Filter - Tube Filter - Tape and Echo

Apart from some moderate cover wear, the book is in very good condition. 180 pages. First edition, copyright 1974. This item ships WORLDWIDE."

Rare Dynacord EC 280 vintage desktop echo box

via this auction
"ow, this really is a unique specimen. It's pretty large, it's old, it crackles and sometimes pops, but everything works and when you get her tuned right, you will be in vintage audio reverbecho heaven. I'm sure Boards of Canada have one of these in their studio. It lets you route signals in all sorts of odd ways (I've used just this and a mixer to pretty amazing affect!) and create the most detuned, odd, dreamy and sometimes downright dreadful audio you ever heard. Because its some sort of weird hybrid, its pretty unpredictable, apart from that theres one knob that always delivers the detuned weirdness! you can feed anything into this and get amazing results, it sounds especially good after a preamp and before ableton live on a guitar signal. It's old, so there is some case damage, but she's 75% cosmetic. functionally its hard to say because its difficult to know what everything is supposed to do, but it all does what you'd expect, so it's 99% functionally perfect in my opinion. it's just got a lead coming out the back, no batteries, no PSU hassle. it works on UK voltage. not sure what else to say apart from that this is a close to unique opportunity to acquire a legendary and very rare desktop reverb unit."

Roland TR-606 drum computer with Analogue Solutions mods

via this auction

"The unit has been upgraded by the legendary Analogue Solutions with their tone mod upgrade. This upgrade box allows for huge tonal control over every single drum sound on this unit. This upgrade is £150 fitted.
The unit also has the full Analog Solutions MIDI upgrade. This mod is £150 fitted and it allows you to sync your analog beast with your ableton live for amazing sounds and fun."

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