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WMD Manuals & User Guides

WMD designs Eurorack synthesizer modules and boutique guitar effects pedals, giving musicians tools for sound synthesis, modulation, distortion and creative processing.

Tip: include the full model number printed on your WMD label for the best match.

About WMD manuals on Manuals.plus

WMD, also known as William Mathewson Devices, designs Eurorack synthesizer modules and boutique guitar effects pedals in Denver, Colorado, USA.

Find manuals for products such as Synchrodyne, Geiger Counter Pro, Subway, Orion and Legion, covering controls, connections, power requirements and setup.

Choose documentation matching your model and hardware revision before installing modules or configuring expansion, MIDI and expression connections.

WMD manuals

Selected manuals from manuals+ curated for this brand.

WMD Synchrodyne Eurorack modular synthesizer User Manual

April 14, 2026
WMD Synchrodyne Eurorack modular synthesizer Specifications Filter Type: 4-pole (-24dB/octave) Switched Capacitor Filter 2-Pole Output: Available, mellower sound Self-Oscillation: At high resonances on both outputs (more prominent on 4-Pole) Filter…

WMD Synchrodyne Expand Enhanced Control User Guide

May 5, 2024
WMD Synchrodyne Expand Enhanced Control Specifications Core: 4 pole (-24dB/octave) Switched Capacitor Filter circuit Output: 2 pole output for mellower filter sound, self-oscillates at high resonances VCO Frequency Range: .02Hz…

WMD support FAQ

Common questions about manuals, registration, and support for this brand.

  • Which WMD manual should I use?

    Choose the manual for your exact product and hardware revision. Synchrodyne documentation, for example, distinguishes revisions with different clock input and expansion settings.

  • What should I check before installing a WMD Eurorack module?

    Check the module's power consumption, rack depth and power cable orientation in its manual. Follow the revision-specific instructions for expansion cables and jumpers.

  • What power supply does the Geiger Counter Pro R7 require?

    The R7 manual specifies 9V DC, center-negative power, with 180mA draw and 300mA peak input. Input must be between 8 and 10V, and startup may take up to 15 seconds.

  • How do I reset the Geiger Counter Pro to factory settings?

    Hold the TONE ON and MIX DRY buttons while powering the unit. The WAVETABLE display reads Fr when the original settings and presets have been restored.

  • What warranty is stated for Synchrodyne?

    The supplied Synchrodyne manual states a 12-month warranty after purchase. Consult your product documentation and contact WMD through its official website for current terms or help with a problem.