Monday, May 20, 2013


Similar to the Oberheim SEM, "The VEM or Voice Expander Module provides the Core Element for a synthesizer voice. It is part of the Luna Modular CORE SYSTEM series. Designed to integrate into an existing Euro Modular synthesiszer system or as the core element. The VEM also provides an affordable polyphonic solution.

The module is comprised of 3 sections;
VCO - Voltage Controlled Oscillator
VCF - Voltage Controlled Filter
VCA - Voltage Controlled Amplifier

This module has been designed to provide a standard synthesizer signal path. Both the VCO and VCF have a normalized output to allow isolation of each section for external use or processing to be returned back to the module through the Mix-Inputs.

Presented with minimal essential controls and with maximum control inputs. All inputs and outputs are direct and need an external attenuator if level control is required.

The absence of attenuators for the signal and control levels lowers costs and frees up valuable HP space. This design feature allows better use of space as attenuators can then be used for other signals.

The VCO is a full range oscillator sporting Saw and Pulse waveforms.

The VCF is a 2pole Multi-Pass filter with self-oscillation at high resonance.

The VCA is a clean and fast VCA with zero CV feed through.

This is the 'TYPE-1' module. This indicates the style of the module, 1 VCO, 1 VCF & 1 VCA."

You'll find additional details at


  1. I can say from first hand experience:

    Run away from Somatic Circuits
    as fast as possible.

    I sent Mijoe (the guy who runs somatic circuits in Australia) a VC-303 module to be fixed over a year ago and despite him emailing me every few months to say he "just sent it out, and to expect to receive it soon" I have never received the module back from him. Do yourself a favor and steer clear of Somatic Circuits.

  2. Love mine, had it in my rack for almost a decade at this point! Fantastic sounding filter it’s a bit power hungry on start up. But I’ve been using this daily for so long. Really enjoy it.


To reduce spam, comments for posts older than one week are not displayed until approved, usually same day. Do not insult people. For items for sale, do not ask if it is still available. Check the auction link and search for the item. Auctions are from various sellers and expire over time. Posts remain for the pics and historical purposes. This site is meant to be a daily snapshot of some of what was out there in the world of synths.


Patch n Tweak
Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.