Erica Synths — Black Delay


Download the Erica Synths Black Stereo Delay Manual PDF


Creative Erica Synths Black Stereo Delay Modulation Techniques

Module in Focus:
Erica Synths Black Stereo Delay (BSD)
A deep, stereo, DSP-powered delay module – perfect for pushing into experimental, gritty, and atmospheric sonic realms!

Below are sound design strategies based on the BSD features, tailored for distorted percussive sounds, wobbly/crazy basslines, and haunting pads.


Modulating For Distorted Percussive Sounds

  1. Feedback Overload & Self-Oscillation
  2. Turn FEEDBACK fully CW to drive the delay into self-oscillation.
  3. Use short DELAY TIMES (3-30ms) to generate metallic, dirty slapback tones.
  4. Patch an Envelope or Sequencer to FBK CV: Percussive envelope modulation at feedback CV in can create clicky, saturated sound artifacts.

  5. CV-Controlled Glitch & Stutter

  6. TRIGGER INPUT > HOLD/ADD: Use a fast/random rhythm trigger to loop and overdub short audio fragments for granular, choppy effects.
  7. Reverse Trigger: Randomly reverse slices for glitch effects.

  8. Extreme Tape/Spread Effects

  9. TAPE MODE introduces pitch artifacts at short delay times.
  10. Stereo Spread: Hold ADD + turn TIME to max for big left/right jitter. Route percussion through and automate spread for stereo tearing.

  11. Wavefolder/Distortion Combo

  12. HOT INPUTS: Drive hot drum or glitch signals into the IN LVL knob past 12 o’clock for in-circuit “saturation.”
  13. Feedback Path: Use a CV modulator (sample & hold or LFO) to wiggle FBK CV rapidly, creating digital distortion bursts.

Creating Crazy Basslines (Dubstep/Drum & Bass Tones)

  1. Wobble via Delay Time Modulation
  2. TIME CV Input: Patch a bipolar LFO or envelope follower to TIME CV. Set a medium delay time (60-200 ms) in DIGITAL MODE (no pitch shift) for “tearing” comb-filter bass when fed with sub-bass.
  3. ADIABATIC Feels: Slow manual tweaks in TAPE MODE will pitch-shift the repeats for classic dubstep LFO movement.

  4. Feedback Crunch

  5. CV-Controlled Feedback: Use an LFO or stepped-random source to modulate FBK CV, automating drive/chaos.

  6. Syncopated/Polyrhythmic Effects

  7. TAP or Ext Clock Input: Sync delay to groove, then unsync (move TIME) for “shrinking” bass stutters or breaks.

  8. Reverse Bass Mayhem

  9. Reverse Trigger: Momentarily flip the REVERSE mode for mangled, reversed reverb tails on bass, giving DnB breaks a live feel.

Haunting, Atmospheric Pads & Soundscapes

  1. Slow CV Modulation: Pad Smear
  2. MIX CV Input: Use slow random LFO or S&H to fade between dry/wet for subtle pad morphing.
  3. TIME CV: Slowly modulate TIME or manually nudge for ghostly spectral shifts.

  4. Hold Buffer Drone

  5. HOLD Mode: Sample a pad or chord, then switch hold on for looping ambience.
  6. ADD Overdub: Periodically overdub new fragments (with manual IN LVL) for evolving drone pads.
  7. Stereo Spread: In Hold Mode, set stereo spread wide for a super-wide atmospheric field.

  8. Ping-Pong & Multi-Tap

  9. Ping Pong with Spread: Set PING PONG mode ON, then widen stereo spread for engulfing, L/R bouncing echoes that create intricate textures.

  10. Reverse Shimmer

  11. Reverse in Hold: Layer HOLD + REVERSE for ghostly, backward-moving pads, especially with shimmer/chorus upstream or downstream in your patch.

  12. Feedback Texture Generator

  13. Feedback On the Edge: Set feedback just below oscillation—slowly raise for endless, decaying washes that evolve over time. CV slow modulation makes the texture undulate.

Additional Tips


For reference, see the official manual PDF here.


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