CubuSynth Engine Manual de construcción - Página 3
Navegue en línea o descargue pdf Manual de construcción para Equipo de música CubuSynth Engine. CubuSynth Engine 20 páginas. Dual complex vco with wave shaping and modulation features
Imprimir páginaCubuSynth Engine - Build Guide
PCB V1.1 May 2022
MODS (optional but recommended)
Before you start, consider integrating these mods into your module. They will improve some of
its outputs significantly.
As the printing on the PCB still shows original resistor values, you should place these ones first to
minimize confusion.
WAVEFOLDER OUTPUTS:
R189, R190: change from 20k to 47K for higher Gain of wavefolder.
R236, R237: adjust for offset of wavefolder (usually 47k - 470k)
Leave them out until you Power up the finished module, then check the offset of the wavefolder
outputs on an oscilloscope with the wavefolding knobs on 100%.
If the Outputs are not centered around the 0V point, place 100k resistors and check again. Lower
Resistor values shift the output towards positive Voltages.
TRIANGLE OUTPUT:
R2, R3: change from 100k to 110k for offset of Triangle output, also improves sine roundness.
SINE OUTPUT:
R85, R92: change from 100k to 47k - 68k for better sine roundness.
Adjust R81, R96 to 220k – 270k for higher amplitude
PULSE WAVE (VCO1):
C20: replace with wire (cutted resistor leg) for a straight Pulse on VCO1.
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