CCTV.fm Simple Gates Eurorack Module Build & Demo

video upload by

"This is a really cool and simple module from CCTV in Canada. This dual low pass gate is sold as a DIY kit and is quite simple to put together. In this video, I share the build process, some sound samples, and my thoughts on the module.

Intro - 0:00
Build Process & Details - 0:59
Sound Samples w/short envelope - 2:11
Sound Samples w/longer envelope - 2:55
Sound Samples w/slow envelope - 3:32
Sound Samples w/both gates - 4:33
Final Thoughts - 4:51

You can purchase one here: https://www.cctv.fm/product-page/simp..."



"Simple Gates is a dual low pass vactrol gate 4HP module with 3 filter types and a 2-pole mode in a 4HP DIY Kit. Inspired by classic Buchla designs, Simple Gates is entirely passive, drawing power from the incoming CV only.

Each low pass vactrol gate (2 in the module) has an input (on the left) and an output (on the right). Both are DC Coupled. The CV input is below and indicated by an LED and a lightning bolt symbol. CV can be applied to the CV input to open the gate (positive voltages above 1.2V open the gate). The gate can be more or less open depending on voltage applied. Short gates can be used to create plucky, percussive bursts of sound, or gradual, slow CV can be used to subtly shape the sound.

The three position switch switches between 3 different modes:

LPG - A classic low pass gate frequency response. Fully closed, the cutoff is at 20Hz, fully open the cutoff is at 6KHz. Useful for audio sources and percussive sounds. This is the traditional sound most associated with LPGs.
VCA - This mode applies no filtering to input signal, the frequency response is mostly flat. This is useful to add an additional VCA to your system, when waveshaping is to be applied elsewhere. This mode is also great for Amplitude Modulation and Frequency mixing - sending one frequency into the input and another into the CV input to obtain unusual signals on the output. Great for CV too.
LOW - an Extremely Low Pass Filter - This mode has an off-state cutoff frequency at 0.1 Hz and a on-state cutoff frequency of about 800Hz. This is fantastic for bass synths or kick drum synthesis.

Once patched, it's easy to switch between the three modes to experience how each shapes the tone. You will fall in love with this flexibility.

The bottom CV Input is normalized to the top CV Input, and the top Output can be normalized to the bottom input (via a solder jumper on the rear). This allows a 2-pole mode where a source is connected to the top input, a control voltage signal to the top CV Input, and take the output from the bottom gate's output. This mode allows 2 poles of filtering, the filtering done by first the top vactrol gate and then the bottom. This allows 9 different modes of gating to further sculpt your sound.

The Simple Gates Kit contains all parts needed to assemble this module. This kit is appopriate for beginners, there are no surface mount components and all parts are large and easy to solder."

Setonix Synth and Bastl Dual Filters

video upload by John Schussler

"I've already looked at the Setonix Synth Marsupial. Really liked it, and was accordingly quick to order the Macropod when it became available. At about the same time I got ahold of an Ikarie from Bastl.

Between the three of them, I have a hard time choosing a favorite, and all are definitely keepers.

This is a short comparison to get a feel for their respective sounds. I'm not spending a lot of time on the Marsupial since I already covered it (see link in description/above), but do want it here so I can have a clear ear on how it differs from Macropod.

Source VCO is a Dannysound Cali Osc. Envelope from Zadar. Sequence from Stochastic IG. And a touch of Valhalla reverb at the end.

00:00 Intro
00:20 Marsupial
03:44 Macropod
11:28 Ikarie"

8hp Eurorack Filters

video upload by

"So you have 8hp available, and want to fill it with a filter. Here are some options. They aren't all the options, there are many, many more. But a few new 8hp filters have arrived recently (the XAOC, CCTV, and SetonixSynth), so it seemed like a good time to compare them with some other 8hp filters I have close at hand. For the most part I'll be listening to low pass outputs only.

Source audio is an Intellijel Dixie II+, with a mix of several waves. Envelope is from Zadar. Sequence from Stochastic SIG. A touch of Halls of Vallhalla reverb at the end.

00:00 Intro
00:20 Zagrzeb
09:52 Filther
17:14 Marsupial
24:30 Vorg
32:02 Coiler
40:42 Ripples"

CCTV-Quadtec 101 Digital dual quadraphonic oscillator first sound

Published on Aug 8, 2019 Dziam Bass

"Today I have the first sound from the Quadtec 101 digital dual oscillator.

This is a module offering a quadraphone, but initially I did not use the full show when I wave through the pan placing it on the speakers. this patch was more about the sound itself and also quite interesting sequences when one sequencer controls this patch and the sound from one oscillator I raise and lower almost like transpositions ...
This is a great module because it extends the possibilities of creating new sequences or spaces and moving between two oscillators"

more info here: https://www.cctv.fm

"THE GARDEN CITY ELECTRONIC MUSIC COMMUNITY CREATED A TIMEMACHINE USING RARE TESLA BLUEPRINTS AND WENT INTO THE FUTURE TO GATHER DATA OF THE DAY; SEEKING OUT INSTRUMENTS FROM THE CREATIVE YOUTH OF THE FUTURE. UPON RETURNING TO 2019 THEY BROUGHT THOSE IDEAS TO FILIP PIETRUSZEWSKI TO RE-ENGINEER, DESIGN, AND REALIZE THIS FUTURISTIC INSTRUMENT USING MODERN AND ANTIIQUE TOOLS AT HIS MAD SCIENCE LAB AT CAPITAL CITY TRANSISTOR AND VALVE.

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