video upload by CubuSynth Modular
"The CubuSynth Engine is a Dual analog VCO with wave shaping functions, internal modulations and a chaos generator. It is based around the 3340 chip and features 4 Waveforms per VCO and 4 Modulated Outputs, all simultaneously."
CubuSynth Engine Prototype noodling
"Been busy over the last months to develop a dual analog complex VCO for Eurorack.
This is a Prototype quite close to the finished module."
Build Guide - CubuSynth ADSR Eurorack Envelope Generator
"visual build guide for the CubuSynth ADSR"
Pics & module details via https://cubusynth.com:
"CubuSynth Engine
Complex analog dual VCO
Designed to bring a complex VCO, with a huge amount of possibilities and internal modulations to the DIY world, this module stands out for its visual appearence as well as its audible quality and possibilities
How it works
The CubuSynth Engine can work as 2 independent VCOs, or as a complex FM oscillator with its several modulated outputs.
With its inernal 'Chaos Engine' it creates semi-random voltages, generated by the 2 oscillator cores. This signal is then normalized to the CV inputs for Pulse width modulation and exponential FM.
Each of the 2 VCOs offers a switch to select one of the 4 waveshapes to be used by the wavefolders, and the linear FM input normalisations.
CubuSynth - ADSR

It also adds a PUNCH input which holds the maximum level for a few milliseconds before starting the Decay stage. This is very useful for adding extra punch to short percussive envelopes.
- size: 10hp
- GATE and TRIGGER inputs for retriggering
- MODE CV that allows selection of normal ADSR, Gated looping, or full LFO-style Looping mode
- LEVEL CV for additional Volume control / Velocity input (Volume on 100% when nothing plugged in)
- 16 pin power (uses 5V power)
16 mA +12V
16 mA -12V
70 mA 5V
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