MATRIXSYNTH: Metasonix RK5 Dual Low Pass Gate

Monday, December 30, 2019

Metasonix RK5 Dual Low Pass Gate

Published on Dec 30, 2019 CatSynth TV

"We explore the Metasonix RK5 Dual Low Pass Gate. A lowpass gate is essentially a low pass VCF configured to behave like a VCA. The RK5 is a unique take on the LPG with two independent channels that have their own sonic characteristics. It is extremely simple, with just input, output and a single CV per channel. We demonstrate it with envelopes as CV and a variety of input spirses.

0:12 Introduction
0:37 Basic demonstration with noise input
1:41 With Sputnik Dual Oscillator
3:06 With Metasonix R54 Supermodule
4:20 Putting everything together

Pitch and trigger from Arturia MiniBrute 2
Sequencing from MiniBrute 2 and Make Noise Rene

'Since part of our remit is to explore an electronic-music history that didn’t actually happen, one inevitable product would have been a lowpass gate. Our version is a dual unit, dead simple Sallen-Key filter with just input, output and CV input for each channel. The tube used is a “high-perveance” dissimilar dual triode, the 17JK8. It was apparently intended for use as a “cascode” RF front-end amplifier in cheap consumer FM radios.'"

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