Saturday, August 11, 2018

Sunday, August 5, 2018

DELTA VCF + JUNO-1 (Progressive House) [Fair Weather]

Today I'm performing a Progressive House jam featuring my Delta VCF Eurorack Module.
The Delta VCF is a eurorack adaptation of the Korg Delta/Poly-61 synthesizers, and it's excellent for resonant bass pads!
And with resonance it will not dilute your bass frequencies like some filters do.
Click for more information on the Delta VCF
Delta VCF is conjuring up a Max Graham style bass pad using waveforms by the Pittsburgh Synthesizer Box PWM and Saw.
Stereo Widening using Eventide Timefactor

Synth Lead - Roland Juno-1, Big Sky reverb
Kick/Snare - Basimilus Iteritas Alter
Reverb-y Snare - Noise into Bastl Skis for a noise burst...
then my Reverb Tank Driver, then uBurst (MI Clouds)
Hats - Tiptop Hats909
Cowbell - Future Retro Transient
Sequencing - Arturia Beatstep Pro

Recorded direct to Tascam DR-05, some post processing in Cubase.

Saturday, July 28, 2018

101-VCF Filter Higher Pitch Sequence Demo 02 (Roland SH-101)

In my last demo of the 101-VCF 8HP Eurorack module we heard some big phat bass sounds.
So what does higher-pitch sequences sound like going through it?
Answer: Sugary sweet, like a dream.
Take my word for it but watch the video anyway it's a bit repetitious but fun.
Be warned - some delicious high-end pitch resonance ahead!

Oscillators - Pittsburgh Synth Box PWM + Saw, CEM3340 VCO Saw
Envelope Contours - 2xADSR dual envelope
Sequencing - Arturia Beatstep Pro Pitch CV + gate
Kick - Noise Engineering Basimilus Iteritas Alter
Hats - Tiptop Hats909
Delay - Timefactor
Small amount of Reverb - Strymon Big Sky

Tuesday, July 17, 2018

Introducing My 101-VCF Euroack Adaptation Roland SH-101 Filter

Today I am proud to show you my 101-VCF - my adaptation of the Roland SH-101 lowpass resonant filter in a slim 8HP Eurorack module. A filter described as somewhere between a Juno and a 303. Every effort has been taken to preseve the original analog circuit as much as possible. Be warned - some harsh resonance squealing ahead! Recorded direct via Mackie mixer to Tascam DR-05, no effects or post-processing.

Oscillators - Pittsburgh Synth Box Square, PWM, Sub Envelope Contours - 2xADSR dual envelope, Bastl Skis Sequencing - Arturia Beatstep Pro Pitch CV + gate

More details at

Monday, June 18, 2018

Oberheim Matrix-12 Synthesizer Percussion Demo

OMG that Snare sounds familiar. No drum machines or samplers were used in this demo. No, today you're getting a full dose of Oberheim Matrix-12 percussion sounds. Watch as I corral a group of freshly programmed percussion sounds together using MIDI assignments in multi-mode. The Beatstep Pro is in full trigger control. Muting tracks is done on the M12 channel volume page. Recorded direct to Tascam DR-05 via Mackie mixer. No effects mucking about whatsoever. I should be making the patches available sometime soon. Thanks for watching!

Saturday, June 9, 2018


Today a follow-up demo of my Uniox Minikorg w/ a Pitch CV + Gate mod controlled by the Arturia Beatstep, this time sans the annoying percussion. This synth is one big continuous sweet spot! Some delay by Timefactor, a touch of Big Sky reverb, recorded directly via Mackie mixer to a Tascam DR-05. Press play, kick back and let it ride.

Monday, May 21, 2018

2xADSR Dual Envelope DIY Project

And here it is...a dual 4-Stage envelope generator 8HP Eurorack. 2xADSR is a dual envelope module in 8HP Eurorack format based on the Arturia Minibrute. The schematics are openly published on the internet, so it would seem reasonable to have adapted a fun DIY panel/pcb project for educational purposes under fair use. Each envelope is an independent Attack-Decay-Sustain-Release linear contour. Each envelope takes a gate input, puts out a positive-voltage contour and a buffered negative-voltage (DC inverted) contour.

This is a DIY project, just a pcb/panel only, with surface-mount soldering required. You supply the parts components (not included), but it uses all very affordable and easy-to-find parts. I would not recommend this as your very first SMT build, maybe your 2nd or 3rd SMT build though. The BOM and Schematics for this project can be found on muffwiggler
PCB/panel are available in my Reverb Store

Friday, May 11, 2018

Testing Univox Minikorg CV+Gate Analog Synthesizer Mod

Testing out a Pitch CV + Gate mod for the Univox Minikorg, AKA Korg 700/700S. The arpeggio gets faster and ends up sounding inspired by Pink Floyd On The Run. The circuit one the breadboard is from E-Labs, Japan as shared by I added a buffer on the gate since the Beatstep Pro trigger did not push enough current to make it happen. Strangely, the gate does work w/ the original MS-20. Beatstep Pro can do Hz/Volt, this setting can be made in the Arturia Midi Control Center software. Recorded direct to Tascam DR-05, no additional processing. Here's the lowdown:
Synth - Minikorg
Percussion - Basilimus Iteritas Alter
Percussion Trigger - Varigate4
Delay - Timefactor
Reverb - Big Sky, Hall setting

Friday, April 27, 2018

Spring Tank Reverb Eurorack Prototype Module

Today I am showing my prototype Spring Tank Reverb module. It's a driver for old school spring tanks like those found in vintage mixers and guitar amplifiers. The driver module has controls for Drive, Tone brightness and darkness, wet/dry mix, and an input for sending CVs to control the wet/dry mix. I'm using an envelope for CV, Beatstep Pro for trigger sequencing, and beats are coming from the Future Retro Transient. I also run the signal through my dual channel compressor, using a trick where both channels are cascaded for additional compression. I also briefly punch in some delay from Timefactor. Audio was recorded direct to Tascam through a Mackie mixer. EDIT: I noticed some users are connecting this to things that are not eurorack systems. To assist you w/ your efforts here are the active pins on the power input.

Sunday, April 15, 2018

Spring Tank Reverb Breadboard Eurorack Demo

Try not to let your heads explode when this sickness fondles your eardrums. Got my hands on an O.C. Electronics Spring Tank Reverb. On the breadboard I've built a driver circuit with voltage control of the wet/dry crossfader. Who does that???!!....

I do that. And today's demo shows you why. The Future Retro Transient+ is going through the spring tank. The mix is set mostly dry, but I'm using a short envelope to send a burst of reverb wet mix when the snare hits. Using the Beatstep Pro for that. That's what I'm talking about. That. Is what it's all about.

How did I do this? I've frankenstein'd a couple of circuits/ideas together to make this happen. At its core is a Tombolas DIY Spring Reverb Circuit w/ EQ and Drive Control to accommodate a wide variety of tanks. It worked very well, but I was not yet satisfied. For the Voltage Control, I've slapped away the final amp mix stage and replaced it w/ the VC Crossfader circuit by Thomas Henry. I dumped his VCA control, that's another project for another day, and to made some minor changes so it would play nice w/ the Tombolas circuit.