STG Soundlabs Mankato Filter Frac Modified for Eurorack

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via this auction - cool white Moog knobs.

"This is basically the "frac-rack" design that has been modified to work in a Eurorack system. A couple things to note: there are a number of very small nicks in the surface which aren't really obvious except at certain angles. The circuit board is very deep, and measures very slightly under 6.75 inches from the back of the faceplate to the edge of the board. Please make sure to measure your case to ensure that it fits! Otherwise this module looks and sounds fantastic, and performs a number of duties beyond filtering - as an 8 phase LFO / VCO and with wave shaping capabilities when patching the outputs into its control inputs. This module is a one of a kind build for Eurorack and won't be found anywhere else! I have pasted the manufacturer's description below for your convenience. Please don't hesitate to contact me with any questions.

The Mankato Filter is a four-pole lowpass filter with positive and negative outputs at every pole, giving you slopes of 6 dB/oct, 12 dB/oct, 18 dB/oct, and 24 dB/oct simultaneously. the negative slope outputs allow you to use the Mankato as a quadrature sine oscillator with 8 available phases. the Mankato will self-resonate from subaudio to superaudio, and responds to one volt per octave through its unattenuated control inputs. the signal inputs are DC coupled, which allows you to use the Mankato as a voltage-controlled slew limiter..."

The Mankato was designed by Thomas Henry and named by Magic Smoke Electronics.

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Thomas Henry/Fonitronik ADSR/LFO Test

Published on Jul 28, 2013 cane creek·76 videos

"Testing a CMOS ADSR/LFO i've just built, still requires a 1uf Capacitor"

Thomas Henry AD-1 DRUM Synth module & Synthesizers.com Q119

Published on Jul 15, 2013 Ritchie DeCarlo·123 videos

"Just testing the Thomas Henry AD-1 DRUM Synth module with a Synthesizers.com Q119 analog sequencer. No effects, compression or anything added. You are hearing the one module"

Playing around with Thomas Henry Modules

Playing around with Thomas Henry Modules from fonitronik on Vimeo.

"Modules involved are the TH 555-VCO, the TH CMOS ADSR (with added stage gate outputs), the TH Controller LFO, the fonitronik ADC Sequencer, and the fonitronik triple vactrol resonators (prototype). A digital spiral hall module (Accutronics) helps to get the sound out in stereo..."

Thomas Henry Mega Percussive Synth Demo

Published on Jun 13, 2013 NoizeToy2·4 videos

"A little demo of the Thomas Henry MPS module, going through each voice and tweaking all the parameters. Not very musical but hopefully useful for anyone thinking about building/troubleshooting their build.

PCB from http://www.electro-music.com
Panel made by http://www.re-synthesis.com
Panel design and build by me http://www.noizetoyz.com"

Note this is noizetoyz and not noystoise. I believe this is the first panel design by noizetoyz posted here on MATRIXSYNTH so I created a new label. It's always interesting to look back and see where things started. When MATRIXSYNTH started in 2005, the current modular scene was in its infancy and modular posts were pretty few and far inbetween.

There was one previous post from NoizeToy2 featuring an MFOS 16 step sequencer and Raymond Scott's Circle Machine here.

Thomas Henry CMOS ADSR by fonitronik

flickr by fonitronik

"the new finished prototype of the Thomas Henry CMOS ADSR by fonitronik DIY, with added stage gate outputs and an end-trigger."

Thomas Henry 555 VCO by fonitronik

flickr By fonitronik
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Thomas Henry Mega Percussion Synthesizer

flickr By sduck409
(click for more)

"This is my version of the Thomas Henry - Electro-Music.com Mega Percussion Synthesizer."

Thomas Henry MPS = Mega Percussive Synth

via Mr.AcidMachine

"Here are a couple shots of a mr.acidmachine version of the Thomas Henry MPS. There are 8 1/4-inch jacks on the back for Noise Filter CV, Shell Pitch CV, Noise Trigger IN, Impact Trigger IN, Shell Trigger IN, Impact OUT, Noise OUT, and Shell OUT. Tons of controls! Cool and spacey synth drum sounds."

Link above takes you to Mr.AcidMachine where you'll find the second shot.

Thomas Henry's Controller LFO

Thomas Henry's Controller LFO from fonitronik on Vimeo.

"Again a very short demo of one of Tomas' new modules. This video shows just the LFO running in trigger mode, and then in gated mode.  There are only few LFO modules integrating a gate delay and a VCA to create this delayed and inceasing tremolo/vibrato that sounds so musical."

Thomas Henry's 555-VCO

Thomas Henry's 555-VCO from fonitronik on Vimeo.

"A short unedited demo of my built of Thomas Henry's latest 555 timer based VCO. The 1V/Oct input is fed by a Dopefer Quantizer to show how nicely it tracks.

NOTE that i left off the PWM in my build, but added a switch and a LED to switch from VCO to LFO mode. In this demo i only use the VCO mode, though."

fonitronik Thomas Henry 555 VCO

flickr By fonitronik

"my build of thomas henry's last 555 timer based VCO"

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Liquid HiHat V1 4 demo 2

YouTube Published on Aug 15, 2012 by Richarius Molindarius

Hi boys and girl! It's Unkle Ryk. Lol.
During a couple of hours of listening to the 2 voices in my Liquid HiHat whilst building another module, I kept fiddling with things through the patch during the build. About 15 minutes or so before I shot the video, I realized there were no CVs controlling the pitches of the voices! DUH! Lol. Within minutes of hooking up extra cables to do that, the 'beat' that I had already thought bizarre but liked, got even better and I thought - worth shooting a video of as another demo of the LHH V1.4. So here y'are kids! :D

Hope you enjoy. :) Full sorta, explanation of the patch, in the video. :)"

Hex Inverter Liquid HiHat: http://shop.hexinverter.net/

Thomas Henry LFO

flickr By fonitronik

Thomas Henry QuadBass++ bugbrand jamming

YouTube Published on Jul 19, 2012 by LowGainElectronics

"Just messing around with the thomas henry quadbass++
All sounds from quadbass and triggering and cv from bugbrand seq1
Such a fun module."

QuadBass++ modular 1st test

YouTube Published on Jun 17, 2012 by LowGainElectronics

"Testing out the Thomas Henry QuadBass++ module for the first time. Using the bugbrand seq1 for sequencing."

fonitronik DIY modular at HK2011

fonitronik DIY modular at HK2011 from fonitronik on Vimeo.

this is a short clip of the small mobile setup i had with me. here we hear the dual X-4046 VCOs...

Update: one more. I was going through foniks YouTube videos to see which on Vimeo I already posted here. It looks like the following did not previously go up. The description also identifies some of the modules in the system.

fonitronik DIY modular synthesizer 2011 from fonitronik on Vimeo.

Just a short sound sample of the Thomas Henry X-4046 VCO, the WoggleBug, a LoPassGate, and a SEM based filter - controlled by a baby10 sequencer...

Thomas Henry Mega Percussive Synth

via this auction
Pics of the inside below.
"The Mega Percussive Synth uses three subcircuits (Shell, Impact, and Noise) to create one big/nasty/tasty drum tone. Send and Return jacks at each subcircuit for even more sound shaping possibilites. A State Variable VCF, Ring Modulation, and Passive Mixer are just a few functions of the Mega Percussive Synth. This five unit wide module is PACKED with features/controls to create a vast array of analog drum tones.

Here is a comprehensive list of controls...

Pots

RM Balance
RM VCO Depth
RM VCO Pitch
Trigger Sensitivity
Shell Env Gen Decay
Shell Sweep
Shell Pitch
Shell Pitch CV
Impact Env Gen Decay
Impact Sweep
Impact Pitch
Noise Filter CV *
Noise Filter Env Gen Decay
Noise Filter Env Gen Sweep
Noise Filter Freq
Noise Filter Res
Shell Mix
Impact Mix
Noise Mix
Line Volume

Switches

Trigger / Lock
Shell Modulation: Impact / Noise
Noise Filter State: LP / BP

Audio/CV/Trigger Jacks

Trigger In
Shell CV In
Shell Send
Shell Return
Impact Send
Impact Return
Noise Filter CV In *
Noise Send
Noise Return
Synth Out
Line Level Out

LED Indicators

Trigger Level

* Due to the internal limitations of the Filter IC used in the Noise circuit, external CV's can not be used to manipulate the Noise Filter (Nosie Filter CV Knob and associated Jack have no effect on the sound). Not to worry there are still 19 other parameters you can tweak to get that lush analog vibe you're lusting for :-)

Assembled with:

Super Shallow Module - 2" Panel Depth
11 Switchcraft Jacks
20 Alpha Pots - 24mm Size
20 Alco Clone Knobs
3 Toggle Switches with Black Rubber Switch Covers
Red LED
Large Bridechamber Panel - 5 Units wide
Polyester Film Capacitors
Xicon Metal Film Resistors
Double Plated PCBs with Soldermask
MOTM Power Connector
Runs on +/- 15 Volts

Please note that there is a light scratch on the faceplate between the "Impact Pitch" and "Shell Pitch CV" knobs. The scratch is not through the paint and only visible at certain angles..."

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nonlinearity II

"Continued studies in nonlinearity, this time using cross-coupled XR-VCO [Thomas Henry] oscillators, Serge smooth/stepped generators and random voltages from the Wogglebug run through a series of Buchla Low Pass Gates and plotted on the oscilloscope. Recorded 14.09.11 at the Danish Institute for Electro/acoustic Music, Aarhus. Reminiscent of Jackson Pollock's action paintings, mid-century Modernism and a time before the information machines took over. A sketch quickly realized in the dark with improvised tripod and bad, in-camera microphone. To be expanded. Watch with the lights off."


"After touring 3 weeks with 25 Kg of heavy metal synthesizer in a suitcase, I came home wanting something a bit lighter and simpler. My back-to-basics approach uses one SoundBox built for workshops with gypsy children and Afghan refugees in Hungary a few months ago, one contact mic, a Germanium transistor distortion pedal and 10 years worth of found objects collected on trips around the world.

At the heart of this video lies the concept of nonlinearity, that most basic building block of chaos theory and the wonderful complexities of our natural world. The microphone/speaker loop forms a system into which the nonlinear irregularities of 9V electronics, beads, springs, moss, shells and bits of bone produce unique bifurcations and attractors. Shaking things up a bit resets the system and new chaotic patterns begin to emerge..."

Split Wave Modulator V1-20 alpha.3gp

YouTube Uploaded by dolphinicus on Sep 11, 2011

"The Split Wave Modulator V1.20 alpha is actually Version 4 of my 1995/1996 invention the Voltage Controlled Split Wave module where I had come up with the invention / innovation of taking an audio waveform and splitting it into it's positive and negative voltage halves. With that invention I had also mistakenly created a different type of WAVE FOLDING that the well known Electronotes Newsletter creator and author had also mistakenly done in December 1976.
Together these functions allow me to change the amplitudes of each of the halves with external control voltage modulation. Both of the halves after being processed or not are then summed along with a copy of the originally input waveform to give an extremely wide variation in harmonics that are produced.
As Bernie had said, the wave folding portion of this unit (as well as my Split Wave invention) can be considered an opposite type function of the regular Voltage Controlled Filter which REMOVES harmonics from an input waveform. The Split Wave Modulator ADDS harmonics to a simple input waveform."