Erica Synths DIY Polivoks VCO kit User Manual

Erica Synths Tools

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Erica Synths version of the Polivoks VCO uses the core of the original Polivoks VCO, and DIY kit, as all Erica Synths Polivoks modules, comes with a set of the

original Russian ICs and transistors.

Same time, there are plenty of changes in the schematics. We:

1) changed CVs to eurorack standard 1V/Oct (original has inverted CVs)

2) made all CV ins buffered in order to eliminate crosstalk and undesired detune (very few DIY kit producers buffer CV ins - mostly they are just summed on

resistors)

3) made optional adjustments to output signal amplitudes and offsets - you can have the original output signals (they are totally different waveform to

waveform) or make them standard 10Vptp

4) original Polivoks has interesting peak in the triangle waveform - we introduced optional filter to eliminate it or leave as it is

5) we significantly updated pulse wave circuit and introduced PWM - it sounds insanely great!

GUIDE ON ASSEMBLY OF THE ERICA SYNTHS SUPER-ENHANCED POLIVOKS VCO

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