VCO + PLL + SC Filter

Containing several pieces to a traditional synthesizer voice, the Synchrodyne is a powerful addition to any subtractive oriented system. However, it is designed primarily as an experimental sound source/filter, intended to push the limits of modular synthesis.

• Front End Linear VCA
• Switchable Four Stage WaveFolder
• TempCo Saw-core VCO
• Linear (AC/DC) & Exponential (DC) FM
• Bipolar Attenuators for FM
• Calibrated 1V/Oct Input
• Hard Sync Input
• VCO Range ~.02Hz - >=400kHz
• Phase Locked Loop
• PLL Frequency Multiplier/Divider
• Variable Slew & Damping in PLL
• Switched Capacitor Filter
• Multimode Filter Output
• -12 and -24 dB/oct Output Taps
• Stable Self-Oscillation at -24dB/oct
• Voltage Control of Filter Resonance
• Single Stage WaveFolder on Outs
• 100% Analog/Discrete/CMOS
• Expandable - see http://www.modulargrid.net/e/wmd-synchrodyne-expand

https://youtu.be/yw7Tg5DSdwM

https://www.youtube.com/watch?v=y7Oyi7H6gZY

https://www.youtube.com/watch?v=sjHdb8RN9Wo

power draw measured in 2021 with a joranalogue test3 - while idle, it hovers around +/- 80-90 mA, but will peak as high as +113/-100 under moderate cv control

https://www.wmdevices.com/collections/eurorack-modules/products/synchrodyne