NCOM prototype working - Low-Gain Electronics | 4U Modular

video upload by LowGainElectronics

"Took some trace hacking, but the NCOM is finally working. Just have to rev the PCB and order panels. Will also be doing dual comparator and Schmitt trigger I/O boards and Panels to support the main board as it’s a multi function pcb!"

System 73 exploration - Low-Gain Electronics | 4U Modular

video upload by LowGainElectronics

"Prepping for a short performance at our local synth meet this weekend. Showing off a little of what the System-73 can do!"

Modular Lunchbox Prototyping - Low-Gain Electronics | 4U Modular

video upload by LowGainElectronics

"Setup a small system to do some testing with. Working on a new desktop instrument… to be released sometime this winter."

Modular Lunchbox Prototype II - Low-Gain Electronics | 4U Modular


"More exploration of the lunchbox."

‘73 Filter gets a massive upgrade - Low-Gain Electronics | 4U Modular

video upload by LowGainElectronics

"Well I finally fixed my only complaint about the 73 filter… at high resonance settings it falls apart and clips to the rails. No clean sine wave when patched to oscillate…

Well that’s all fixed now… :-D and now I absolutely love this filter even more than before!!"

Modular Noise Lunchbox Synth - Low-Gain Electronics | 4U Modular Synthesizer

video upload by LowGainElectronics

"Prepping for knobcon getting some demo modules together. Didn’t think I’d have as much fun with this as I did! :) add some reverb we I could drone for days!"

Lunchbox Sequencer self patch - Low-Gain Electronics | 4U Modular

video upload by LowGainElectronics

"Quick self patching of the Lunchbox Sequencer before packing it up for KnobCon 2023!!"

Variable Bandwidth Filter Prototype 2 - Low-Gain Electronics | 4U Modular

video upload by LowGainElectronics

"Corrected some simple mistakes and have the VBF behaving much better! First half is with single oscillator (Squarewave) and two simple modulation sources. Second half has two square wave oscillators mixed into the input with same modulation sources."

Variable Bandwidth Filter Prototype - Low-Gain Electronics | 4U Modular

video upload by LowGainElectronics

"Far from ready/finished. But I’m very happy to finally have this thing passing audio!"

Elements of Melody - Low-Gain Electronics | 4U Modular Synth Pane

video upload by LowGainElectronics

"The Elements of Melody panel is just about complete. Few more tweaks yet to be made to the Pots & Pans module… but overall I’m very happy with how it’s turning out!"

Sequence of Events - Low-Gain Electronics | 4U Modular Sequencer

video upload by LowGainElectronics

"Sequence of Events is just about ready for #knobcon2023 !!"

Lunchbox Voice Prototype gets patched ! - Low-Gain Electronics | 4U Modular

video upload by LowGainElectronics

"Had a shop visit from the talented @helenastndc all the way from Spain/Sweden yesterday! We had a great discussion about synthesizers, design/diy and education. She got a little time to patch on the lunchbox voice system prototype on my test bench. We didn’t get a chance to get a proper recording of it but I fired it up where she left it and grabbed this recording of it this morning. Just turned a couple of knobs during the recording to see what sonic journey it would take! Hope you enjoy! Headphones recommend for full fidelity!"

Positive Slopes Complete! - Low-Gain Electronics | 4U Modular

video upload by LowGainElectronics

"Positive Slopes is finally complete! Will get on the website ASAP!

www.Low-Gain.com"

4U Modular - Prototype Module | Low-Gain Electronics

video upload by LowGainElectronics

"New thing in the works! :) the question is do I leave it as a basic function block or add a bunch of input processing to make it even better…"

Desk Jam No. 1

video upload by Slightly Nasty

"Live jam with the RITM-2, Slightly Nasty Modular, tape loop, Korg Monotribe & Monotron, Roland MKS-7, and Akai S3000XL.

Didn't really know where to go with this one, so there's plenty of desperate noodling on the RITM-2 to in an attempt to buy time."

Quad ‘73 Filter Bank + ‘73 Envelope Generator | Low-Gain Electronics - 4U Modular

video upload by LowGainElectronics

"Experimenting a set of 4 ‘73 Filters and an R7 ‘73 Envelope Generator"

Low-Gain Electronics / Barton Musical Circuits Dual Simple Quantizer Testing

video upload by LowGainElectronics

"Testing up the Dual #bartonmusicalcircuits simple quantizers in #4umodular ! Seem to be working as expected!"

Hollasynth Scanner - Low-Gain Electronics experiments

video upload by LowGainElectronics

"Just playing around confirming functionality of this Hollasynth Scanner pcb behind the Low-Gain Electronics panel. :)"

Details on the Hollasynth

"The Hollasynth four-channel scanning VCA is a version of Jurgen Haible’s Interpolating Scanner idea, in 4U Serge-compatible format, complete with a beautiful front panel by Loudest Warning

It is a four-channel voltage controlled crossfader. As the scan CV is swept from 0V to 5V, the mix output fades from channel 1, through a mix of channel 1 and 2, to channel 2, then fades to channel 3 and finally channel 4. In addition to the main mix output, there is an individual output for each channel. Front panel knobs provide an offset and attenuversion on the scan CV.

The gain of each channel is also individually controllable, so the module can be used as a four channel VCA as well. A switch allows the scanning control to be disabled so that only the VCA CV affects channel gain. Finally there are attenuator for the gain CV and initial gain knobs on the front panel.

What can I do with it?
Probably more than I can! But try some of these:

Crossfade between the wave shapes of a VCO for voltage-controlled morphing, e.g. from sine to saw to triangle to square and back. Like this.
Crossfade between up to four audio sources under voltage control. Like this.
Voltage controlled CV mixing. The inputs and outputs are DC coupled so you can use the module to mix and morph between CV sources
Voltage controlled signal switching. By appying stepped CV to the scan input, e.g. from a sequencer, you can switch between signals rather than fading… if you get the CV set up just right! Like this
Audio Waveshaping. Patch fixed voltages or LFOs or whatever you like into the signal inputs. Send an audio rate 0-5V sawtooth into the scan CV. Use the mix output as am audio signal. Like this. Or like this. (Thanks, Loudest Warning!)
How does it work?
The scanner contains four linear VCAs, one per channel, based on the LM13700 IC. Each VCA is controlled by the sum of two CVs: the direct VCA CV and the scanning CV. The scan CV is provided by a version Don Tillman’s beautiful scanner implementation, used with his kind permission. (But please don’t bug him if you have issues with the module!)"

4U Modular Synth Parts & PCB Serge CGS Clee Slightly Nasty

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"Serge, CGS, CLEE, Slightly Nasty, 4U Modular Synth Parts & PCB

This collection is all 4U format. These are not Eurorack format.


The front panels are all unique and custom made. The panels are based on the 'Loudest Warning' standard.

Panel height is 175mm and 2mm thick, made from anodised aluminium.

A lot of the panels already have hardware fitted, some have loaded PCBs (please see photos).

Everything in the photos is part of the whole auction lot.


Below is a list of items included.


The racks are listed and associated PCBs are listed nearer the bottom of the list (All Untested)

Not all the panels have complete hardware (see photos)

All panels are fixed to Eurorack rails(see photo)

CLICK FOR MORE »

Exploring the modular lunchbox | Low-Gain Electronics

video upload by LowGainElectronics

Low-Gain Electronics Lunchbox Modular session.

video upload by LowGainElectronics

"Put together a little system to take to a gathering of friends… excited to see what this selection can offer pared with the Matrix Mixer

Modules used:
Tri-Core VCO
Dual Slopes Compact
SSG
PVK Filter
Dual LPG + Mix + Pre

Visit www.Low-Gain.com for more info on the system."