# Korg — Volca FM2 - [Manual PDF](../../manuals/volca-fm2_OM_EFGSCJ3.pdf) --- [**Korg Volca FM2 – Manual PDF**](https://cdn.korg.com/us/support/download/files/9863546a1d7b52332efbfc68870ea464.pdf) --- # Korg Volca FM2: Creative Modulation Strategies for Eurorack Musicians The Korg Volca FM2 is not a direct Eurorack module, but its highly flexible FM engine can be integrated into a modular setup for wild, unique sound design—especially via MIDI, clock/sync, and audio routing. Here’s how you can achieve distorted percussive sounds, basslines for genres like dubstep/DnB, and haunting atmospheric pads by modulating this FM synthesizer. --- ## Quick Reference: Modulation & Connectivity - **Sync In/Out**: Sync the Volca FM2 to your modular clock or use its clock output to drive modular sequencers. - **MIDI In/Out**: Extensive MIDI control over parameters (via external MIDI modules or eurorack-to-MIDI interfaces). - **Motion Sequencing**: Record parameter movements for evolving sequences. - **Multiple Voices & Operators**: Deep FM editing for modulation and complex textures. - **CV to MIDI**: Use eurorack CV-to-MIDI modules to control FM parameters in real time. --- ## 1. **Distorted Percussive Sounds** **Key Concepts:** - Fast EG (Envelope Generator) attacks & decays - Overdriven modulation indexes - Sequenced operator modulation for rhythmic textures **How-To:** - **Sharp Envelope Settings:** - Set MODULATOR and CARRIER **attack and decay** knobs to minimum for super-snappy transients. - Use the built-in sequencer or MIDI triggers to play short, percussive sequences. - **Operator Feedback for Distortion:** - Edit FM algorithms to maximize feedback. Algorithms with operator self-feedback create more harmonics and can sound distorted. - In EDIT mode, experiment with feedback parameters—crank them for harsh metallic or noisy percussion. - **Motion Sequencing:** - Record distortion-inducing movements on your operator envelopes and feedback during the sequence. - Use FUNC + MOTION SEQUENCE ON to capture real-time knob tweaks for glitchy, mangled rhythms. - **External Distortion:** - After output, route the Volca FM2 into a wavefolder, distortion, or bitcrusher eurorack module for even more aggressive drum hits. --- ## 2. **Crazy Basslines (Dubstep/Drum & Bass)** **Key Concepts:** - FM for growls and wobbles - Quick, extreme MODULATOR/CARRIER parameter changes - Real-time modulation (via MIDI or Motion Sequence) - Velocity & envelope shaping **How-To:** - **Wobble Bass:** - Assign LFO (RATE and P.DEPTH) to pitch or index modulation for classic wobble. - Use Motion Sequence to automate the movement of the LFO’s RATE while the sequence plays—this gives “talking” or formant bass FX. - **Growling Bass:** - Use complex FM algorithms (8, 21, 23, 27, etc.) with multi-stage operators feeding into each other. - Modulate FM index and carrier levels for “wet” bass dynamics. - **MIDI/CV Control:** - Use a CV-to-MIDI module (like Mutable Instruments Yarns, Expert Sleepers FH-2, etc.) to map Eurorack LFOs or envelopes to MIDI CC messages controlling LFO rate, feedback, velocity, or algorithm selection. - Map your modulation sources to the pitch or operator envelope parameters via MIDI Learn or DAW automation. - **Transient Variation:** - Use the internal sequencer to vary note velocities (VELOCITY slider), and record that motion for dynamic accents typical of DnB/dubstep. --- ## 3. **Haunting Atmospheric Pads** **Key Concepts:** - Slow attack/release on envelopes - Subtle LFO modulation - Motion Sequence for evolving timbres - Layering internal FX (chorus, reverb) **How-To:** - **Envelope Settings:** - Set MODULATOR and CARRIER ATTACK/DECAY to medium-high for slow, swelling pads. - Layer long-release times for pads to “bleed” into one another. - **Chorus & Reverb:** - Activate chorus (FUNC + CHORUS) and reverb (FUNC + REVERB) for rich stereo depth. - Adjust chorus/reverb levels with FUNC + ARP TYPE (Chorus) and FUNC + ARP DIV (Reverb). - **Modulate Algorithms:** - In EDIT mode, Motion Sequence slow sweeps of the algorithm or feedback parameters for constantly-shifting harmonic content. - **Sync & Layering:** - Sync Volca FM2 to a slow external clock. Sequence chords or drones with eurorack MIDI control. - Stack several motion-sequenced pad programs in a CHAIN to create sustained, evolving ambient soundscapes. - **Atmospheric FX:** - Use FUNC + PROGRAM RANDOM to occasionally randomize sound programs for weird, evolving backgrounds—in a controlled, sparing manner for “ghostly” layers. --- ## **Extra Patch Ideas/Integration** - **Layering:** Use the Volca FM2 as a voice in a multi-timbral setup with other Eurorack sound sources. Layer its digital FM with analog VCOs for hybrid textures. - **Realtime Performance Tweaks:** Exploit the Touch Keyboard to inject pitch runs, trills, or glissandos amidst modulated sequences for more humanized, expressive performance. - **Sample and Reprocess:** Record Volca FM2 output, slice up in a sampler, and trigger with percussive sequencers—or pipe back through resonant filters, granular FX, etc. --- ## **Tips When Integrating with Eurorack** - You *must* convert your modular signals—use MIDI or clock interfaces, as the Volca FM2 does not have native CV inputs. - To control program parameters from Eurorack, use a MIDI-to-CV converter capable of automation or CC transmission. - Consider battery or isolated power to avoid ground loops when integrating with large Eurorack rigs. --- For detailed MIDI CC mappings and parameter explanations, [download the full Korg Volca FM2 manual here (PDF)](https://cdn.korg.com/us/support/download/files/9863546a1d7b52332efbfc68870ea464.pdf). --- [**Generated With Eurorack Processor**](https://github.com/nstarke/eurorack-processor)