Very Simple Dual Active Mixer 3 x INPUT 1 x OUTPUT

Very Simple Dual 3xINPUT 1xOUTPUT for Eurorack/Kosmo Synthesizer System

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Just a Very Simple Double 3xINPUT 1xOUTPUT. Mixer Module for Eurorack/Kosmo Synthesizer System. Low parts and easy to understand.

Schematic_3x Input 1x Output Mixer Building Blocks_2021-02-09.pdf What Mixer Building Blocks Adobe Portable Document Format - 395.37 kB - 02/09/2021 at 22:33	Preview	Download

Schematic_Simple Dual Mixer_2021-02-06.pdf Adobe Portable Document Format - 78.80 kB - 02/06/2021 at 23:05	Preview	Download

Simple Mixer
Neil Mundt • 02/06/2021 at 22:45 • 0 comments

Half of the schematic for a Simple eurorack mixer. You can Use a TL074 or TL072. Depends on how many Op amps you decide for your mixer.

The First op amp(U1.1) Inverts and Amplifies the mixed voltages with a Gain of 1.

Then that is fed into the second op amp(U.1.2) Inverts and Amplifies the mixed signal phase back to the Original Phase with a Gain of +1.

You can add as many Inputs as you want. I am probably going to make 4xInput 2x Output Version for my Rack. You can never have too many mixers.
Simple starter Module For Euro Rack
Neil Mundt • 11/01/2020 at 23:31 • 0 comments

This is a really good starter module. Video made by Synth Diy Guy SDIY Class # 10 - Building a dual Mixer . He Explains how Op amps Function and shows the Basic schematic. Based around the TL074 Quad Op amp. Here is some other layouts for the panel that I ended up not using.