MATRIXSYNTH: Roland Jupiter-6 Synthesizer Filter VCF Build - Demo 01

Tuesday, February 07, 2017

Roland Jupiter-6 Synthesizer Filter VCF Build - Demo 01

Published on Feb 7, 2017 gstormelectro

"Audio and Video by G-Storm Electro c.2017

This video demos a Roland Jupiter-6 synthesizer clone filter VCF. This breadboard build took two days, and for me is the largest one I've built yet. Does this circuit sound as good as the original? You be the judge. Anyway, I really wanted to hear what it sounded like before deciding about building my own module.

I came across schematics for the Roland Jupiter-6 at They actually sell completed modules and PCBs, however they seem to be perpetually out of stock. This will be a nice companion multi-mode filter to go next to my SEM module. IMHO the SEM sounds buttery and creamy, and the Jupiter-6 is a complete savage with outrageous low end."


Roland Jupiter-6 Synthesizer Filter VCF Build - Demo 02

Published on Feb 21, 2017 gstormelectro

"Audio and Video by G-Storm Electro c.2017

Just kick back and enjoy these wicked analog multi-mode filter sounds. Lots of little sweet spots on this filter, if you skip around you might miss something really good. It definitely has that Roland sound.

Today I am demonstrating the Jupiter-6 filter clone I just finished building. See demo #1 for all the details. Basically the circuits and chips are the same as demo 1 breadboard test, just now they are stuffed into a 10HP eurorack module w/ some illuminated sliders."

Prototype module inspired by the Jupiter-6 filter.
Uses two IR3109 OTA chips like the original.
24 db/oct low pass, 24 db/oct high pass, 12 db/oct band pass.
Two audio input jacks w/ signal attenuation/gain pots.
So the inputs can be over-driven just like the original.
Two CV input jacks w/ signal attenuation pots.
Illuminated Frequency and Resonance Sliders.
Trimpots on PCB for adjusting frequency and resonance response.
Each module is painstakingly prototyped and assembled by hand including PCB and face plate.

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