Quick Test After Korg MS2000R MIDI Switching Modification

video upload by John L Rice

"In this custom case of eurorack modules and a Korg MS2000R I have a custom interface module that brings all of the MS2000R’s inputs and outputs to the front. Last year I added a switch to the panel to select MIDI from either the panel’s input jack or what ever is plugged into the Synthrotek MIDI To Cv module. Today I added a behind the panel connection from the Division6 / Mattson SQ816 sequencer to the custom panels’s MIDI input so I can dispense with using an external cable. #eurorackmodular #modularsynth #korg"

Quadrangle Kit Released! - Quad Eurorack Envelope / Function Generator - Modular Synthesizer

Published on May 18, 2018 synthrotek

"The Quadrangle is now in Kit form!

The Quadrangle is quad cascading triggered envelope generator with bipolar output attenuversion. Each channel has voltage control over attack and decay/release, end of attack and end of cycle trigger outputs, and mode (AR, loop and AD). Each channel's EOC is normalled to the next gate input, resulting in interesting rhythmic opportunities. Channel 4 has a "stop" or "continuous looping" switch which allows either a "one shot" cascaded envelope or continuous cycling. The SUM output allows for longer and more dynamic bipolar envelopes, perfect for interesting modulation. Users also have voltage control over all of the attacks and decay/releases simultaneously when using the ALL A and ALL D/R input jacks. Massive function generation, modulation, rhythm and versatility sets the Quadrangle in a class of its own.

Features:
4 Cascading envelope generators
Attenuverters for each envelope output (dial in that secret sauce!)
Attack, Decay/Release and Loop modes per channel
Super fast ~2 mS (Audio Rate) envelopes
CV over Attack and Decay/Release per channel
CV over ALL Attack and ALL Decay/Release
Bipolar Voltage SUM output of all envelopes
End of Attack & End of Cycle trigger outputs per channel
Normalled EOC to next channel Gate input (broken when jack is patched)
One Shot or Continuous Looping of all channels
Specifications:
Module width: 20HP
Module depth: 15mm
Current draw:
+12V: 64mA
-12V: 44mA
Comes with power cable, 2.5mm and 3.5mm screws"

Synthrotek Ambient Music - Vol. 1 - MST System 104, VERB Quadrangle

Published on May 16, 2018 synthrotek

"Ambient performance by Steve Harmon"

And some PNW sacrilege on the other end of the spectrum:

Synthrotek:s ROBOTOize Pop Music! - Nirvana - Smells Like Teen Spirit

Published on May 16, 2018 synthrotek

"Do you desire to have a vocoder, pitch shifter, speak-n-spell effect, vibrato, 8-bit modulator and a bit crusher sounding module all in a lo-fi heavily CV controllable package? Well surprise! we read your mind! The Roboto module is all these and more (and it has a neat Cylon looking graphic that lights up). Check it out!

Features:
Can be in either Robot mode or Pitch mode, but not both. Handy LEDs tell you which mode you're in. The ROBOT button toggles between the two.
Vibrato toggles on and off. Works in either Robot mode or Pitch mode.
Robot and Vibrato CV inputs activate those modes (and deactivates in the case of vibrato) upon receiving a gate pulse. Gate pulses in these inputs are just like pushing their corresponding buttons. Expected transition is from 0V to +5V (and back to 0V), but it will handle any voltage within the power supply range without damaging the module. Transition between what is considered "off" and "on" is at approximately 2.3V.
Rate pot/input control the clock speed in the chip. A CV input of 0-5V will mimic the range of the pot, but voltages outside of this range will push the rate setting further.
The CV input is mixed with the voltage coming from the pot.
The pitch pot is used to pitch the audio up or down when in pitch mode. It has 7 zones/pitches; 12:00 is normal pitch, and there are 3 steps up and 3 steps down from there.
0-5V fed into the Pitch jack mimic the full travel of the pot (0V is lowest, 5V is highest, normal is ~2.5V). Voltages outside this range are tolerated but won't provide any added functionality.
The pitch pot is disabled when a plug is inserted into the CV jack.
Roboto is fun at parties.
IN LVL adjusts the level of the incoming signal.
MIX:
CCW=input signal only
CW=processed signal only."

ROBOTO Eurorack Robot Vocoder LoFi Module - Synthrotek Demo

Published on Mar 3, 2017 synthrotek

via Synthrotek

"Do you desire to have a vocoder, pitch shifter, speak-n-spell effect, vibrato, 8-bit modulator and a bit crusher sounding module all in a lo-fi heavily CV controllable package? Well surprise! we read your mind! The Roboto module is all these and more (and it has a neat Cylon looking graphic that lights up). Check it out!

Features:
Can be in either Robot mode or Pitch mode, but not both. Handy LEDs tell you which mode you're in. The ROBOT button toggles between the two.

Vibrato toggles on and off. Works in either Robot mode or Pitch mode.

Robot and Vibrato CV inputs activate those modes (and deactivates in the case of vibrato) upon receiving a gate pulse. Gate pulses in these inputs are just like pushing their corresponding buttons. Expected transition is from 0V to +5V (and back to 0V), but it will handle any voltage within the power supply range without damaging the module. Transition between what is considered "off" and "on" is at approximately 2.3V.

Rate pot/input control the clock speed in the chip. A CV input of 0-5V will mimic the range of the pot, but voltages outside of this range will push the rate setting further.

The CV input is mixed with the voltage coming from the pot.

The pitch pot is used to pitch the audio up or down when in pitch mode. It has 7 zones/pitches; 12:00 is normal pitch, and there are 3 steps up and 3 steps down from there.

0-5V fed into the Pitch jack mimic the full travel of the pot (0V is lowest, 5V is highest, normal is ~2.5V).
Voltages outside this range are tolerated but won't provide any added functionality.

The pitch pot is disabled when a plug is inserted into the CV jack.

Roboto is fun at parties.

IN LVL adjusts the level of the incoming signal.

MIX:
CCW=input signal only
CW=processed signal only.
Cool Robot LED indicator.
Current Draw:
+12v @ 65mA
-12v @ 15mA
+5v @ 0mA
Depth: 34.5mm (1.36in)
Comes With:
Keyed Power Cable.
2.5mm and 3mm rack screws.
Super cool sticker."

The Roboto was first mentioned here.

Synthrotek RND Eurorack Module - Full Demo CV Random & CV Clock

Published on Feb 14, 2017 synthrotek

"http://store.synthrotek.com/RND_c_159...

Introducing the Synthrotek RND! It's like a math.random() function for modular gear!

This handy module is a feature rich random voltage generator that is shallow and super powerful. It outputs random voltages (similar to a sample and hold) in time with either its internal clock, or with an external clock you can patch in. An external clock will bypass the internal clock, and the CV jack over the clock, so your random voltages will always be in sync with whatever you patch in. With CV control over both the clock speed and the range of your output voltage, you could create anything from a wildly fluctuating blur of notes all the way to a slow, lilting tune. The RND can also be used as a clock source with it's clock out jack.

*Note: due to the voltage drop of the LED in the slide pots, the Range LED wont light up unless the output voltage is above 2v.

Features:

Clock Speeds:
Slow: 0.5Hz to 10Hz
Medium: 2Hz to 40Hz
Fast: 16Hz to 320Hz
Linear CV Control over clock speed and range.
Over and Under voltage protection.
CV inputs take 0 to +5v.
Output voltages range from 0v to +5v.
4HP
Depth: 40.3mm (1.58in).
Current Draw:
16mA @ +12v
0mA @ -12v
0mA @ +5v"

New Synthrotek RND Module Now Available

Published on Feb 4, 2017 synthrotek

via Synthrotek

"Introducing the Synthrotek RND! It’s like math.random() for modular gear!

This handy module is a feature rich random voltage generator that is shallow and super powerful. It outputs random voltages (similar to a sample and hold) in time with either its internal clock, or with an external clock you can patch in. An external clock will bypass the internal clock, and the CV jack over the clock, so your random voltages will always be in sync with whatever you patch in. With CV control over both the clock speed and the range of your output voltage, you could create anything from a wildly fluctuating blur of notes all the way to a slow, lilting tune. The RND can also be used as a clock source with it’s clock out jack.

Features:

Clock Speeds:
Slow Range: 0.5Hz to 10Hz
Medium Range: 2Hz to 40Hz
Fast Range: 16Hz to 320Hz
Linear CV control over clock speed and range"

Synthrotek MST VCO Now Available!

You've seen the videos first here and here. The Synthrotek MST VCO based on George Mattson's Mattson Mini Modular VCO design is now available here. This completes the Synthrotek MST eurorack line of modules and offers a complete system. Previously a George Mattson system was only available in the proprietary Mattson Mini Modular format along with a few individual eurorack modules from Division-6.

The new MST VCO is available in complete, kit, and PCB/Panel form.

Here's what Synthrotek has to say about the release:

"The circle is complete!

We are super stoked to announce that we now have the first very complete Eurorack monophonic voice in both kit and complete form. The VCO was the last of the modules that are essential to this complete voice. Customers can now build or purchase complete this module to either make a very complete monophonic ‘east-coast’ style voice or add this 100% analog beautiful sounding oscillator to their current system. Like most of the other modules in the MST line, the VCO was designed by synth legend George Mattson."

MST Noise / Sample & Hold / Track & Hold Eurorack Module Video Demo - Synthrotek

Published on Feb 20, 2015 synthrotek

http://www.synthrotek.com/products/ms...

"The MST Noise/ Sample & Hold / Track & Hold Module supplies you with all the noise and random goodness you need in one small 4HP package. White, pink, and slow-random noise are just a patch away. The white noise is normalled to the signal input or input your signal of choice and break the normalled connection. To activate either the S&H or T&H, just supply the module with your clock source to start generating stepped random control voltages.

Features:

White, Pink & Slow Random Noise Output

S&H sample signal input

S&H clock input

S&H or T&H output

Sample & Hold / Track & Hold select switch

Specifications:

Current draw: TBD

Width: 4HP Depth: 4.8 cm (1.88 in)"

New Synth Gear and Makers in January 2015

After this year's massive New Years post, I thought it might be interesting to see how many new makers and new gear announcements we received in a single month.

This may or may not become a monthly theme on the site depending on interest.  If you think it's worth while, leave a comment.

At a high level we had 12 new makers, one new old maker previously never featured on the site, and a whopping 193 new synth related products. Check out the module list below.  The list is a combination of what was either announced or released this month.

The list in order of appearance:

CLICK FOR MORE »

Happy New Year From MATRIXSYNTH! - A Look Back at 2014

Happy New Year everyone!

I want to start by thanking everyone that comes to MATRIXSYNTH and helps make it what it is - the readers, the supporters, and of course all the sponsors on the right.

THANK YOU and have a GREAT 2015!!!

This site is a labor of love and a ton of work. This site is ultimately meant to be an testament to everything synth in the making. We have over nine years of daily synth history captured here, 119,983 published posts. I can't wait to see what the future brings us in 2015!

That said, here are a few interesting bits from 2014 in the longest post of the year. ;)

CLICK FOR MORE »

EITHER-OR Synthrotek Eurorack OR combiner Module Synth DEMO 1

Published on May 23, 2014 synthrotek·130 videos

"The Either-OR is an 8-channel switchable OR Combiner logic module. The Either-OR allows the user to switch between 2 signals per channel, or combine both of the channels for an OR logic output.

There are also 2 jumpers per channel on the back of the module that allows the user to select between a center OR combiner or a center mute function, or 'off.'

The Either-OR allows the user to combine gates, triggers and other logic signals into a single combined OR output.

There are 8 numbered rows that can be daisy-chained in order to input many multiple logic sources, resulting in complex gate or trigger outputs.

This is a passive module and thus does not need a voltage connection or power cable. The passive diodes produce a slight voltage drop between the input and the output of each channel. As a gate combiner it will combine 2 gate inputs to produce an OR function on the output. When combining CVs, the highest positive input will appear at the output with about 0.7 volts of drop.

The Combine-OR is available as a fully assembled module or in kit form. The kit can also be assembled to switch between audio signals with a center mute. To make the center position a 'mute' or 'off,' remove both jumpers from rear header pins (on each channel).

Specs:
- 14HP
- Power Consumption: 0 mA
- Module Depth (from back of front panel): 1 inch"

synthrotek.com