ST Modular - HONEYEATER V3 (CEM3340 VCO)

video upload by ST Modular (Stefan)

"The sound examples are not intended to be musical, but merely to present the functions audio-visually.

For more information, please visit st-modular.de.

(The video mentions that the CEM3340 chips were used in the Roland Jupiter 6 and ARP Odyssey — this is not true and has been corrected in a later edit of the video.)

00:00 Intro
00:20 Features
01:52 Playing with Honeyeater #1
05:10 PWM and Dry Waveforms
06:12 Playing with Honeyeater #2
07:55 Frequency Modulation
11:19 CV PWM
11:55 Sub-Oscillators
13:02 Honeyeater & Dirty Dan"

Weston HV 1 Hybrid Oscillator (sound.report english)

video upload by Heiner Kruse - The Green Man(TGM) - sound.report

Timestamps:
00:00-02:33 Intro
02:33-04:20 Digital Osc
04:20-05:40 Aux CV-In Modulation WT Cluster
05:40-08:33 Scale and organize Modulation
08:33-11:10 Fold Algorithms and FM
11:10-15:09 Where’s the beef - + WT Chord Mode

HV1 is an oscillator that brings the best of both the analog and digital worlds: At the core is a super stable, great-tracking, analog triangle core VCO. The triangle is fed into a digital phase shifter, which outputs a phase-shifted triangle and morphed wavetable waveform. The phase-shifted triangle is also transformed into a complementary set of sawtooth, pulse, and sine waveforms using analog circuitry. The digital waveforms are both 16-bit / 150kHz resolution, with available anti-aliasing, making them right at home with the analog waveforms.

Features:
+ Detune ability to make HV1 act like 2 separate, parallel oscillators
+ True linear Phase Modulation & Through-Zero FM
+ 16-way morphing wavetable output with ability to load WaveEdit format and Serum files from SD card
+ Auxiliary CV assignable to wavefolding and bitcrushing effects
+ Built-In Tuner Function
+ Great tracking and stability with 8 octave switch

Creative Cross Modulating Eurorack Filters // Double Bubble by Thonk Synth

video upload by DivKid

"Here we have a new Eurorack DIY stereo filter from Thonk Synth. It's a stereo analogue multi mode filter made for creative modulation. Whether it's dual parallel channels, series filer routings, mono to stereo, stereo in and out or even mono filtering with a separate filter modulator (a filter modulator? What? - heads up, it's ace!). Check out the patches below."



"Double Bubble is a 16HP Eurorack dual analog multi‑mode filter designed for creative sound design and flexible signal processing. Each channel features an analog filter core that can operate in one of four modes – Low‑Pass, High‑Pass, Band‑Pass, or Notch. The input of Channel A is normalled to Channel B so its easy to create stereo filter patches from a mono sound source.

The two channels of Double Bubble can run as independent dual mono filters or be linked together for stereo operation. The filters can also be routed in serial configuration to create more complex signal paths such as a variable width bandpass or notch phasing effects. The SPACING control and wide range of CV inputs give deep modulation possibilities such as dynamic formant style filtering.

The FEEDBACK and XMOD (cross‑modulation) controls add further interaction between the two channels, ranging from subtle harmonic enhancement at low settings to more extreme, self‑modulating textures when increased. The dedicated V/OCT inputs for each channel allow the filters to function as FM oscillators or tone sources when pushed into self‑oscillation. This flexibility allows the Double Bubble to cover a wide range of roles, from precision cascading filter patches to dynamic stereo filtering and experimental feedback adventures!

Features:

Dual analog VCF with LP, HP, BP & Notch outputs
Resonance control per channel with switchable compensation
Mono, serial, parallel, stereo link routing options.
Cross modulation (XMod), FM and V/oct inputs per channel
Feedback with positive & negative phase
Frequency Offset Spacing with CV control
LED indicators for visual feedback on modulation and modes.
Designed in-house at Thonk"

Xaoc Devices Introduces Konin 1963 Amplitenuator

video upload by Xaoc Devices

Check with dealers on the right for availability.

"We've got a new small utility module for you - Konin Amplitenuator! It is only 4HP and fits into any case. It is designed for precise manual control of gain and attenuation across two channels. Whenever you need to boost a weak signal by up to +20 dB or tame it down to just 1% of its original amplitude (or even less!), Konin is ready to oblige. It also serves as a versatile voltage source, spanning the full range from -10V to +10V, or fine-tuning to 10mV, all adjustable with a single, smooth turn of the knob. Oh, and it can be a simple dual attenuator as well. This one doesn't break the bank, but will certainly feature in many of your patches.

Main features:
width 4HP
depth 32mm (including cable bracket)
precision attenuator
attenuverter
signal amplifier up to +20dB
dual adjustable voltage source
PRICE: 90 EUR, available now!"

Check with dealers on the right for availability.

CLICK FOR MORE »

RaceRunner Phaser introduction

video upload by Kanawha Music

"A quick video introducing our new Phaser module, and exact replica of the 'chorus' effect from the Crumar RoadRacer electric piano."

Divergent Waves Sycamore playing Four Seas and Friends

video upload by Molten Music Technology

"A quick demo of my newly built Sycamore melody generator. It's running into the Four Seas wavetable thingy, which is being filtered via the Riot VCF, into the Trifecta effects. Meanwhile an Ona VCO is pumping the second channel through a Gemini Vintage filter. There's some modulation too!"
Divergent Waves - Sycamore Demo

video upload by Divergent Waves Mar 1, 2024

"Sycamore is a looping, quantized, randomised sequencer with 45 scales to choose from, as well as a few tricks up its sleeve...

Sycamore is based on the (Cancelled) Mutable Instruments Seeds module, which itself was likely an exploration of Turing Machine like sequencing with a little more control."

"Sycamore is a random looping sequencer with quantization and a wide range of scales. The quantized loop can be shifted, mutated, tweaked and otherwise fiddled with in a number of interesting ways.

With CV over almost all the internal parameters, Sycamore allows for tight control over the loop, while maintaining performability with comfortably spaced knobs.

Some advanced features are accessible through a one-layer menu to allow for more deep tweaking of harmonies, delay, and scale quantization - however, Sycamore is perfectly usable without touching these at all!

Sycamore makes use of CircuitPython for its program code, allowing for easy modification and tweaking should you wish to do so. The module also features an i2c expansion port reserved for future use, or for you own hacking.

Melting Point Vactrol Filter

video upload by Ground Grown Circuits

"Short demo of a sequence running through the Melting Point vactrol filter. Now available on my Reverb page"

via this Reverb listing

"THIS IS A FULL DIY KIT

This kit includes everything required to build the Melting Point vactrol filter. This is a character filter that will add a lot of color to the sound.
There is a low-pass and hi-pass audio input, an audio output, 2 CV inputs and a variable level “Strike” CV input.

The feedback/resonance will begin self oscillating slightly past noon, and will continue to add more drive and color if you push it further.
Trim pot on the rear allows adjustment of CV response.

Includes a power cable and 4x M3 screws.

There is a qr code in the kit that will take you to a page with build instructions.

Please note the knobs included in the kit are different than the knobs in the finished module image."

CLICK FOR MORE »

ST Modular - CUERLY (3-Channel Stereo Mixer with Cue)

video upload by ST Modular (Stefan)

"The sound examples are not intended to be musical, but merely to present the functions audio-visually.

For more information, please visit st-modular.de.

00:00 Intro
00:16 Functionality
00:59 Website
01:10 Cuerly in Action!"

cuerly / 3-channel stereo mixer with cue / 6 HP

Cuerly is a compact 3-channel stereo mixer with cue functionality, allowing you to pre-listen to signals before sending them to the main mix. It’s the perfect mixer for live performances in a small Eurorack setup.

key features
3 Stereo-Channels
Level Control per Channel
Cue Buttons for Pre-Listening
Heaphone Output
Headphone Level Control
Mix to Headphone Control
Max. Gain +20dB
Wrong polarity protection

CLICK FOR MORE »

SYNTH-WERK to Release SW MOON 505 Multimode Filter

via SYNTH-WERK:

"The moon has risen...

Our first Moon Modular module after the sudden and unexpected death of our friend Gert Jalass.

The SW MOON 505 Multimode Filter is available and can be ordered from us now.

It is the first product in the Moon Modular filter series. More will follow…

Price: 430 Euro plus TAX"

Check out the only demo of the original Moon Modular branded 505 featured on the site here.

PDF spec sheets below.

CLICK FOR MORE »

[$11] DIY eurorack modular synth 5step Sequencer | Arduino nano based

video upload by HAGIWO

"My 88th original eurorack modular synth DIY projects.
Arduino nano based 5step CV/Gate sequencer , Buchla Easel inspired.
Digital control , Analog output.

working documents (schematics,code)
https://note.com/solder_state/n/nf6c2...

Please support me to continue projects.
In patreon you will find content about my background , technical information.
/ hagiwo

-------------------------------------------------------------
Repository of HAGIWO's DIY Modular Synth
https://note.com/solder_state/n/n54e0..."

New BEHRINGER BQ-10: It Will Leave You Speechless!

video upload by Behringer

"The Behringer BQ-10 is a 24-step analog sequencer that captures the essence of classic sequencing with the flexibility of modern modular workflow. Designed in Eurorack format, it’s hands-on, immediate, and built to spark ideas without screens or menus getting in the way.

Key features:
• Single 16-step or dual 8-step sequences
• Dedicated 8-step CV channel for filter or amplitude control
• Per-step trigger outputs for custom reset patterns
• External trigger input for clock sync
• Full CV control for deep modular integration

From evolving sequences to tight, synced pattern changes, the BQ-10 brings vintage character and real-time control straight into your setup.

Available now through Behringer distributors worldwide."

Michigan Synth Works MSW-820 Incoming

via Michigan Synth Works

"So several ppl reached out about MSW-830 [see previous posts], and that device is on hold for now.

However! I do have something to announce:

MSW-820
2 VCOs with Saw and Pulse
16 Mode VCF based on the Caveman Totem filter
2 ENV, Noise and syncable LFOs, External In
Onboard MIDI
Eurorackable
Pretty much the analog section from 830.
Coming real soon. Price TBA"

CLICK FOR MORE »

Tsunami v0.1 Voltage-Controlled Wave Folder test.

video upload by flightofharmony

"17 minutes of noodling with the almost-ready Tsunami.

two-stage wavefolder, with low and high breakpoints of each stage variable by potentiometers and collectively by a control voltage. Also with voltage-selectable inversion (invert/not invert)of input mix and voltage-selectable (limit/no limit) output limiting.

No editing, just raw upload."

RYK TimeSlice Quad Looper and sampling laboratory - sound demos and technique tutorials

video upload by RYK Modular

"CHAPTERS:

0:00 – Time Slice !

0:08 – Drum loop and synth with FX
Track3: Drum loop with Delay FX, and Pitch Shifting. End Of Loop Pulse sent from drum loop to pulse an envelope in ENVY Machine. The envelope is patched to amplitude mod on ALGO.
ALGO output is patched into Track 2, with Delay and Pitch Shift effects applied

01:07 – Ambient Piano treatment
Track 1 Jazz piano loop. Tracks 2,3, & 4 are resampling from Track 1, and are set to Live Loop mode. Each track has random trigger from ENVY Machine, for resampling input from paino loop on Track 1.

01:58 – Live Keyboard loop recording, with drum loop and granular scanning trumpet solo !
Track 1: Using DAW loop style to record VECTOR WAVE keyboard sounds, then Track 2: using RETRO loop style to record bass line also from VECTOR WAVE.
Drum break loaded from internal storage, Decimate FX applied.
Flute sample sliced, slowed down, Wave Folded, and sliced-scanning modulated by knob recording on ENVY Machine.

CLICK FOR MORE »

New SEOK Eurorack Modules - DRIPS, AT, M22, & ROTARIES

SEOK - DRIPS – Voltage Controlled Analog Filter [DEMO no talk]

video upload by SEOK synthesizers

via SEOK Eurorack Modules

DRIPS

A warm and bubbly 12 dB/oct analog Eurorack filter with dual voltage control of frequency. Low-pass, band-pass, and high-pass outputs in one compact 8 hp module.

With external signals, the filter stays soft, clean, and precise. Adding resonance gives a liquid acid tone (like a good filter coffee). When driven into self-oscillation, it produces sine waves perfect for deep bass, kicks, and percussive sounds.

An integrated VCA placed after the filter lets you shape both tone and dynamics in a single path – precise when clean, saturated and raw when pushed.

Raise the offset to move seamlessly from rhythmic sequences to heavy drones.

Background:
We wanted to build a versatile Eurorack VCF/VCA with a balanced function-to-HP ratio. For us, ergonomics are as important as function – it should feel intuitive and spacious around the core controls.

And since we’re from Sweden, we couldn’t resist adding a little warmth.

CLICK FOR MORE »

Olivella Modular Furia | Discrete transistor filter & VCA

video upload by Tom Churchill

"Olivella Modular's Furia is a 4-pole transistor ladder filter, based on the E-mu Modular 2100 LPF designed by Dave Rossum in the 1970s, paired with a discrete transistor VCA with tons of gain. There are no ICs anywhere in the audio path, so it has an authentically vintage sound, and it distorts in a really musical way. In this video, I give an overview of Furia’s signal path and controls and build a few patches to demonstrate how it sounds.

Chapters:
00:00 Intro & patch previews
01:42 Furia overview
07:41 Pinging the input
09:41 Overdriven acid
13:54 Furia as a low-pass gate
16:39 Dirty drum machine preamp
22:00 Audio-rate cutoff modulation"

"FURIA is a discrete 4-pole ladder filter and a transistor VCA with a variable response CV curve control. It isn't 'just' a filter, but an all-around vintage-sounding sculpting and performing tool.

The filter section is based on the venerable E-mu Modular 2100 LPF, but unlike it, there're no ICs in the audio path - even the output stage op-amps are transistor based, both in the VCF and VCA sections.

As its name suggests, FURIA has plenty of gain on tap: the INPUT LEVEL knob starts distorting around 9 o'clock and interacts with the resonance in interesting ways, while the VCA and its X10 input switch can transform the filtered sound into nasty acid basslines - no external distortion required.

You can use the filter and VCA independently or in series, with an AMP CV input that's normalled to the FREQ CV input to facilitate a LPG-like configuration.

The AMP IN allows you to mix a signal into the VCA after the filter - for example, a higher register FM'd or wavefolded sine wave with a bassier filtered sawtooth from the LPF stage.

Unlike most ladder filters, FURIA's LPF is fully DC-coupled, though internal offsets may produce slight clicks at the VCA stage.
To remedy that, the DIP switch on the back lets you selectively AC-couple the VCF and VCA inputs and outputs, reducing clicks and offsets for audio purposes. It also allows you to change the VCF -> VCA normalling for series, parallel or independent use."

Hello Drummertime - Tubbutec

video upload by Stazma and Tubbutec

"This was the very first patch I did when I got the Drummertime in the studio (30 minutes ago hahaha). I just played around and that's the result. Bass triggered by the accent, drums from the amazing 6mod6 also by @tubbutec and @lpzwmodules

You can connect these two with special cable on the back so you don't have to use patch chords but well I was in a hurry and wanted to jam ;-)

More infos about the Drummertime & Tubbutec here: https://tubbutec.de/drummertime/

Have fun!!!!"

"Tubbutec Drummertime is a TR-x0x-inspired step sequencer for drums.
It is available in different Eurorack form factors, features large, tactile buttons, and has many powerful features.

Drummertime is optimized for live performance and allows quick programming and editing of drum patterns.

Big sibling of 6equencer."

Djupviks Systral: MS-20 Filter Gone Feral

video upload by Lesjamusic

"Djupviks (‪@vikingsade‬ ) Systral is an MS-20 topology stereo filter that refuses to behave. Built with red LEDs instead of the traditional green (because Djupviks), this dual-channel chaos machine gives you shared frequency cutoff with independent resonance per side, a continuously variable blend control between low-pass and high-pass, and analog noise normalled into the CV inputs that whispers instability through every self-oscillation peak.

🔴 KEY FEAT

URES:
Dual MS-20 topology filters red LED nonlinearity
Shared frequency cutoff, independent resonance per channel
Blend control: morph continuously from LP to HP
Analog noise normalled to CV inputs (audible at high resonance)
Independent gain controls per channel
Stereo tension 😵‍💫"

Bathymeter Gesture Recorder Quick Preview

video upload by Robots Are Red

"A quick preview of Bathymeter by Decapod Devices and Mega Modular Corp."

BF2144 test

video upload by centrevillage

"Comming Soon..."