How To Build A Eurorack Modular Synthesizer

 In, How-To's, Synthesizers

Eurorack is a modular synthesizer model which lays out a system’s electrical and form factor characteristics such as signal standards, width, height, and power connector for case components and module used in development of a synthesizer device.

Developing A Eurorack System

A Eurorack System

The procedure involves structuring and studying a personalized electronic musical gadget comprehensively. It is important to note that individuals do not require prior experience or expertise to be able to build a Eurorack system.

However, studying already existing systems gives one an overview of what is required to execute the process. Today, there are numerous channels where beginners can carry out extensive research such as websites.

Required Modules

Many systems consist of a series of modules such as; a sequencer, Lopass Gate(LPG), VCO(Voltage controlled oscillator), and modulation sources.

Modules come in various types such as clock manipulators, filters, voices, digital effects, and controlled voltage mixing surfaces.

Voltage Controlled Oscillator(VCO)

The VCO forms the basic source of sound in an instrument. While there are numerous VCOs, the best type should have inbuilt timbral animation within the module.

Lopass Gate (LPG)

Lopass gate is a merge of Voltage controlled amplifier and Low pass filter which are available in monosynths.

The LPG plays two major roles which are; regulating an instrument’s amplitude dynamics, and carving the timbre. Lopass gate is a merge of Voltage controlled amplifier and Low pass filter which are available in monosynths.

Modulation Sources

Modulation sources move the modular synthesizer. Individuals can use a function generator at the beginning then follow it up with a random voltage generator when necessary. The FG enables users to execute predictable changes in the instrument’s sound. It can also be used to build LFOs and envelopes

Random Voltage Generator

The RVG develop unpredictable voltage controls.

However, an effective RVG should regulate the development of unpredictable voltages.


A sequencer enables users to execute changes in the timbre and pitch.

A sequencer enables users to execute changes in the timbre and pitch while building musical events in order to create musical passages. See how to create a sequence. It basically is an integral part of an instrument. Individuals who use the MIDI to control voltage complete with a Digital audio workstation, then the sequencer is not necessary. Even then, users who aim at building an instrument which can function in the absence of DAW, must incorporate the sequencer.

While it is not necessary to sequence melodies, voltage controlled effects such as tempo and timbre can be sequenced.

Cables And Power Supply

Apart from an effective collection of modules, users will require a 10 patch cables at most nd a cabinet complete with power supply. Patch cables are readily available and quite reasonably priced. It is important to carry out extensive research before choosing cables and power supply. While some options come at a lower cost, they could have some limitations.

These components make an integral part of the system and it is important for every user to study them to ensure that they purchase the best available ones. An efficient power supply and a good case format that caters for the user’s requirements not only allows the modules to function adequately, it makes its operations convenient and interesting.

Finally, frequent travelers who intend to take their systems with them may want to invest in a portable case. While it may be expensive, the magnitude of convenience it offers surpasses the cost.

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