Erica Synths Bassline Module Manual (PDF)
Based on the manual for the Erica Synths Bassline, here are several approaches you can use to create unique and expressive sounds with this analog synth Eurorack module. Techniques are tailored to build distorted percussion, crazy basslines, and haunting pads/atmospheres.
The Bassline module offers the following modulation options: - VCO FM In (1V/oct & FM) – Frequency modulation - VCF CV In – Voltage control of the filter cutoff - VCF Env In – External modulation of the filter envelope - Accent In – Accent dynamics/grooves - Gate In – Trigger the envelope/VCA - VCO SUB/LEVEL, TUNE, DETUNE – Add weight and detuned dirt
Below are targeted patches and ideas for each sound design goal:
Patch Tips: - Set the oscillator to pulse or saw for harmonic richness. - Crank the VCO Level and use the SUB Oscillator for added punch. - Use a very short VCF Env Decay for sharp, snappy transients.
Modulation: - Overdrive with Resonance: Increase VCF Resonance to near self-oscillation. Modulate Cutoff via VCF CV for aggressive filter pops. - FM Percussion: Patch envelopes, LFOs, or fast random CV into the FM In for pitch modulation at audio rates, creating metallic/distorted timbres. - Accent Input: Use a sequencer or random gate source to accent alternate hits—crank up gain to push the VCA into saturation. - Patch a noise module or another VCO into the VCF CV, slightly, for dirt and unpredictable snappy energy.
Patch Tips: - Push the TUNE into lower registers for sub-bass power. - Use SUB Oscillator for additional weight and movement.
Modulation: - Wobble Bass: Sync an LFO (triangle/sine) or step-sequencer to the VCF CV for rhythmic filter sweeps (“wobble”) at musically synced rates. - Filter FM: Use audio-rate FM into the VCF CV In for aggressive, vocal-like growls—route another oscillator or noise in here. - Envelope Shaping: Adjust the VCF Envelope Decay for plucky or drawn-out shapes; modulate this decay time with external CV if possible. - Accent Input: Sync to the ‘off-beats’ or drums for pumping/groove effects.
Patch Tips: - Detune the oscillator for chorused width. - Use both the saw and pulse waves plus SUB for dense harmonic content. - Long VCF Decay for slow-moving filter morphs.
Modulation: - Slow LFO/Envelope to VCF CV: Slowly move the filter cutoff for evolving ambient drones. - FM with slow LFO/random source: Subtle FM (into FM In) for ghostly, shifting timbres. - Manual tweaking of Resonance & Cutoff: Perform live sweeps for organic, haunting edges. - VCF Envelope Input: Patch an external envelope (from another EG or complex modulator like Maths) for complex opening and closing of the VCF. - External Effects: Run the output through long reverbs/delays, but pre-feed these by modulating the Bassline for constantly transforming pad soundscapes.
| Mod Source | Patch To | For What Sound | Result |
|---|---|---|---|
| Fast Envelope | FM In | Percussion | Metallic, snappy attacks |
| LFO/Seq | VCF CV | Dubstep, Pads | Movement/Wobble, evolving sweeps |
| Audio-rate Osc | VCF CV / FM | DnB Basses, Distorted Hits | Vocal, growl, harsh textures |
| External Envelope | VCF Env In | Ambient | Evolving timbral changes |
| Accent Gate/Pulse | Accent In | Groove, Emphasis | Accented notes, dynamics |
Use these ideas as starting points for custom patches—let your modulation sources run wild!