MATRIXSYNTH: River Creative


Showing posts with label River Creative. Show all posts
Showing posts with label River Creative. Show all posts

Wednesday, December 27, 2017

New River Creative Technology Marble & Dendrites


Published on Dec 27, 2017 River Creative Technology


"Marble - Dual spectral tilt tone control

dual channel tone control
optionally stereo-linked, and CV controlled
switchable between spectral tilting (3dB/oct) and mid-range bell EQ
feedback control and soft saturation
designed with discrete transistor OTA cores

Dendrites - A multi-character multimode VCF / phaser

16 filter/phaser modes (4 LP, 4 BP, 2 HP, 2 phaser, and 4 mixed modes)
3 distinct resonance characters: Q-comp, Vintage, K-style
switchable organic sounding overdrive
linear and exponential FM
CV control over modes, resonance and frequency
designed with discrete transistor OTA cores
pleasantly saturating input stage with level trim and LED indication
envelope and modulation inputs with independent attenuvertors

Prices
Marble: EU: DIY Kit €195, Built €215, Outside EU: DIY Kit:  €161,16, Built:  €177,69
Dendrites: EU: DIY Kit €290, Built €325, Outside EU: DIY Kit:  €239,67, Built:  €268,60

* prices exclude shipping
** prices exclude shipping and customs duty/tax (if applicable in your country)

Availability
Both modules can be ordered now via http://www.riversynths.com/, first units will be shipped on February 1st, 2018. Both modules are available in ready-made and DIY versions (partially assembled with SMD)."

Sunday, February 19, 2017

The River, gestion des modulations issues du clavier


Published on Feb 19, 2017 laurent

"Présentation rapide de la gestion des modulations issues du clavier : pression, velocités d'attaque et de relâchement et molette
ainsi que le mode pseudo polyphonique...."

The UI screams Axel Hartmann's Waldorf designs. See the River Creative label below for previous posts.

Wednesday, January 13, 2016

Nucleus DIY instructions


Published on Jan 13, 2016 River Creative Technology

"DIY assembly instructions for the River Nucleus, a voltage controlled filter with discrete OTA core for the Eurorack format."

See the Nucleus demo video here.

Tuesday, January 12, 2016

River Creative Technology Nucleus Demo

Note: Auction links are affiliate links for which the site may be compensated.
Published on Jan 11, 2016 River Creative Technology

"Video demo of the River Nucleus, a voltage controlled filter with discrete OTA core for the Eurorack format.

For details see:
http://riversynths.com/product/nucleus/"

River Creative Technology Crux DIY Instructions


Published on Jan 11, 2016 River Creative Technology

"DIY assembly instructions for the River Crux, a dual voltage controlled amplifier with discrete OTA core for the Eurorack format.

For details see:
http://riversynths.com/product/crux/"

Wednesday, December 23, 2015

River Creative Technology Crux and Nucleus Eurorack Modules

Two new eurorack modules from new eurorack maker River Creative Technology.

Crux Dual voltage controlled amplifier with discrete OTA core:

"dual VCA around discrete transistor OTA core

switchable linear or exponential VCA response

switchable between Audio (AC) and CV (DC) use

starts to pleasantly saturate beyond levels of 10Vpp (clips at 20Vpp)

envelope (unipolar) and modulation (bipolar) CV inputs

smart normalization of unused envelope inputs to allow for full-range bipolar modulation

Design overview

After overlooking VCAs for many years, I began to appreciate the huge range of functions they can serve up. They’re really everywhere, in simple loudness contouring circuits, tremolo effects, tone controls, filters, overdrives, mixers, amplitude modulators, panners, cross-faders, and CV performance controllers. I also learned that VCAs put their subtle signature on the overall sound of an instrument.

The VCAs in the Crux are built around newly designed operational transconductance amplifier (OTA) circuits, built from discrete transistors. If you need a super-accurate VCA, this is not for you. However, if you appreciate the warm and lively nature of discrete electronics, the Crux will serve you well.

A phrase often used among modular musicians is “you can never have enough VCAs”. Probably followed by “I need more rack space”. That’s why the Crux is a compact module, simple and straight, a short signal path, and no frills. As there are no frills, there’s little fancy text here. It can do what a VCA does. It can do it twice. It can do it linearly or exponentially, and does it on audio or CV. And that’s it!"

Nucleus Voltage controlled filter with discrete OTA core:

"designed around discrete transistor OTA cores

switchable resonance character with optional ‘Solid bass’ behaviour.

switchable filter slope: 12 or 24dB/Oct

pleasantly saturating input stage and resonance with higher levels

linear and exponential FM options

envelope and modulation inputs with independent attenuvertors

soft-touch knobs and quality hardware (mostly Alps)

Design overview

After discovering analog synths, modulars and the beautiful original and cloned analog filters of Moog, Korg, Roland, Sequential, and the likes I felt I wanted to try something a little different and see if I could come up with something that sounds unique and musical in its own right, rather than being a retake on proven circuits from the past. Furthermore, I was hoping to overcome dependency on (nearly) obsolete components, and benefit from the quality of modern components.

The core of the Nucleus contains a newly designed operational transconductance amplifier (OTA) circuit, built from discrete transistors. While there are technically superior alternatives, a discrete circuit excels in providing a warmer and more lively sound.

My wish was to make the sound of the Nucleus as versatile as possible. After studying many different filters to identify the key to their unique sound, I decided to include a filter slope switch (12 or 24 dB/oct), and a resonance character switch with three distinct modes (see box).

In each of these modes, the low-frequency resonance behaviour can be further tailored with the ‘Solid bass’ feature, cleaning and firming up the low-end, or leaving it to boldly resonate.

Resonance character:

Neutral – Classic resonance, reminiscent of vintage 4-pole designs. Inherently with a loss of low-end at high resonance.

Q-comp – Similar to neutral, but compensated for loss of low-end. Providing a firm and stable resonant sound, with slightly different saturation character.

K-style – The beefiest of all modes, with a thick mid range and fat low-end, and an aggressive resonant sound.
nucleus_mod

Concluding the design, I added a variety of modulation options for linear and exponential frequency modulation (FM), envelope modulation, and keyboard tracking (1V/Oct)."
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