The Waldorf Microwave XT represents a pinnacle in digital wavetable synthesis, emerging in the late 1990s as a powerful evolution of Waldorf’s Wavetable Synthesis technology. This rack-mounted powerhouse, instantly recognizable by its distinctive orange (or black) housing, revolutionized the approach to digital sound design through its comprehensive hands-on control interface.
Core Architecture and Sound Engine
The Microwave XT’s foundation rests on a sophisticated digital engine that delivers exceptional sound quality and flexibility:
- 10-voice polyphonic architecture (expandable to 30 voices)
- 8-part multitimbral capability
- 20-bit digital-to-analog conversion
- 256 internal sound patches with 64 external card storage
At its heart, the synthesis engine employs dual wavetable oscillators per voice, accessing 64 different wavetables that range from basic waveforms to complex spectral content. This powerful combination enables sound designers to craft everything from classic analog-style sounds to unique digital textures that define the Microwave XT’s signature character.
Sound Demos
Interface and Control Design
The Microwave XT’s most striking feature is its thoughtfully designed interface, which revolutionized how musicians interact with digital synthesis. The front panel presents an impressive array of real-time controls:
- 44 continuous encoder knobs for immediate parameter access
- Clear 2×40 character LCD display
- Logical control grouping for intuitive sound design
- 16-slot modulation matrix for complex sound sculpting
This hands-on approach eliminated the menu-diving common to digital synthesizers of the era, making the Microwave XT exceptionally performative and immediate in both studio and live settings.
Sound Shaping Capabilities
The synthesizer’s sound-shaping capabilities extend far beyond basic synthesis, offering a comprehensive suite of filtering and modulation options:
Filter Types:
- Dual multimode filters with various configurations
- Low Pass/High Pass combinations
- FM Filter implementation
- Sin(x)-LowPass for unique timbral shaping
- Band Pass and Band Stop options
Built-in Effects Processing:
- High-quality chorus and flanger
- Multiple delay types with modulation options
- Distinctive autowah and overdrive effects
- Dynamic panning capabilities
Performance Features and Musical Application
The Microwave XT excels in performance situations through its thoughtful design and extensive control capabilities. The synthesizer’s real-time control features make it an exceptional instrument for both studio production and live performance:
- Smooth MIDI controller transmission from endless encoders
- Complex modulation routing possibilities
- Extensive pitch and volume control options
- Mathematical “modifiers” for advanced sound manipulation
Models and Variations
Two primary versions were released to cater to different user needs:
- XT: Standard rack-mounted unit
- XTk: 49-key keyboard version
A limited black edition (666 units) was produced exclusively for the German market, adding to the instrument’s mystique and collectibility.
Sound Character and Musical Identity
The Microwave XT’s sonic palette is remarkably diverse, capable of producing:
- Rich, evolving pad sounds
- Aggressive lead and bass timbres
- Complex rhythmic textures
- Unique wavetable-based soundscapes
Its distinctive character has made it a favorite among electronic music producers, particularly in genres requiring complex, evolving sounds.
Technical Maintenance
Modern owners should consider several maintenance aspects to ensure optimal performance:
Encoder Maintenance:
- Regular rotation recommended (approximately 50 turns)
- Periodic internal cleaning may be necessary
- Proper storage conditions to prevent lubricant hardening
Legacy and Contemporary Relevance
The Microwave XT’s influence continues to resonate in modern music production. Notable artists who have employed the synthesizer include:
- The Crystal Method
- Astral Projection
- Mirwais
- Cirrus
Operating System Evolution
The synthesizer received multiple operating system updates throughout its lifespan:
- Version 2.33 (XTk)
- Version 2.29 (XT)
These updates enhanced functionality and resolved operational issues, demonstrating Waldorf’s commitment to the platform’s development.
The Waldorf Microwave XT stands as a testament to innovative digital synthesis design. Its combination of powerful sound generation, intuitive interface, and distinctive sonic character continues to make it a sought-after instrument for electronic music production. Whether crafting complex evolving textures or punchy, aggressive leads, the Microwave XT delivers a unique voice that remains relevant in contemporary music production.
Soundbanks
- Official Sound banks from Waldorf
- A large collection of different banks on Preset Patch
- Paul Nagle XT Patches
Waldorf Microwave XT Emulation
In 2024, the open-source project DSP56300/The Usual Suspects released Xenia, a free plugin emulating the Microwave II hardware. Unlike traditional emulations, Xenia replicates the DSP56300 chip itself, enabling precise reproduction of the original’s sound engine, including its digital filters, which are critical to the synth’s gritty, evolving textures. This hardware-level approach ensures the emulation sounds spot-on, mirroring the Microwave II’s raw, metallic tones and dynamic wavetable sweeps. Users must install the original Microwave II operating system (OS) for the plugin to function, preserving its authentic firmware behavior. Currently in beta, Xenia supports VST, AU, and CLAP formats across Windows, macOS, and Linux.
Your can download the plugin here
Mastering the Waldorf Microwave II/XT: Essential Resources & Tips
Tips & Tricks
Unlock the full potential of your Waldorf XT with these expert tips:
- A Quick Tour of the Microwave II/XT – A beginner-friendly guide to get you started.
- The Waldorf Microwave II/XT Cookbook – An official guide by Waldorf, packed with humor and wisdom.
- An Extra LFO from Modifiers – Learn how to create a third Low-Frequency Oscillator (LFO) for more complex modulation.
- Wavetable Browser – Build a patch that allows you to explore all of the XT’s wavetables effortlessly.
- Formant Shift Through Windowed Sync – Achieve smooth hard sync effects for rich, formant-like timbres.
Workshops: Deep Dives into Sound Design
For those eager to refine their sound design techniques, these workshops provide step-by-step insights:
- Vocal Sound Workshop Part 1 & Part 2 – Learn to create human voice-like textures with detailed programming tips.
- Waveshaping Workshop Part 1 – Understand the mathematics and theory behind waveshaping for unique sonic transformations.
Wavetables & Reference Charts
Wavetables define the Microwave XT’s signature sound. These resources help you navigate and utilize them efficiently:
- Microwave II/XT Wavetable Reference Charts – A visual guide to all of the XT’s built-in wavetables.
- Four “Filter-UPAW” Wavetables – Custom wavetables simulating high-resonance filter responses for experimental sound design.
- Four Vocal Phrase Wavetables – Wavetables featuring distinct vocalizations, including words like “mi-cro-wave” and “mu-zik.”
XT Links: External Tools & Resources
Enhance your Microwave II/XT experience with these useful links:
- Waldorf Music – Official website for Waldorf synthesizers, including firmware updates and manuals.
- Soundtower’s µWaveEdit – A professional editor-librarian for the Microwave II/XT, making patch management a breeze.
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