CG Products
design — construction — sound

Eurorack Module


Analog BBD Delay with voltage controlled feedback

Delay1022 frontal view
Delay 1022
  • Delay times from 2.5 ms to 50ms (without T CVin)
  • CV controllable delay time (≙ feedback frequency)
    • Good 1V/oct. tracking
  • Feedback CV control input
  • 2nd delay output behind feedback-contolling VCA
    • Delay muting
    • Noise reduction
    • Effect inserts
  • Manually controllable output lowpass (12dB)
    • Noise reduction
    • Sound control
  • Switchable highpass mode (from Rev.6)
  • Width: 12 HP
  • Dimensions: 128,5 mm x 60,6 mm
  • Depth: 52mm
  • Supply voltage: ±12V
  • Current: +12V: ≈78mA; -12V: ≈55mA
  • Optionally available in banana version
The Delay1022 is no classic echo, but a delay designed for audio rate feedback and sound sculpturing (Karplus-Strong). The 1V/oct. tracking and a feedback CV input makes it suitable for many VCO-like applications, for creating drum and string -like sounds and/or for room ambience. There is a certain amount of noise, as to be expected from analog BBD delay modules, however the Delay1022’s clear and brillant sound in combination with the manually controllable output low pass filter makes this completely tolerable.
  • Delay1022 panel drawing


  • Delay1022 side view right I

    Right side view I

  • Delay1022 side view right II

    Right side view II

  • Delay1022 side view right III

    Right side view III

  • Delay1022 side view right IV

    Right side view IV

  • Delay1022 side view left I

    Left side view I

  • Delay1022 side view left II

    Left side view II

  • Delay1022 banana version

    Banana version


In1: Short decayed noise/squarewave…rhythm machine (with 2 Delay1022s) 1V/oct keyboard (/with Portamento) to T CV in2 1V/oct…envelope generator to Feedback CVin

In1: Dynamic impulses; Delay Time ‘T CV2 in 1V/Oct.’ controlled by sequencer; different ‘Hicut’-filter and BBD1/BBD2 settings

In1: LFO triggered short decayed noise/squarewave; different lowpass filter settings Sample+Hold with LFO to T CVin 1;

In1: Rhythm machine with XR22VCO – 2 Delay1022s; different CV ins

2 Delay1022s; Inputs: Filtered and gated noise. (Background sound: rhythm machine)<

Or listen on

Audio routing

(Without timebase CV)

Audio routing schematic


Simple patches with other (CG Products’) modules

Delay1022 impulse triggered

1. Delay1022 triggered with short impulses

The dynamic pulse output of the PEAK+HOLD (or any other impulse source) feeding the Delay1022 is a simple way to create percussive drum and string-like sounds.

Delay1022 with noise bursts

2. Delay1022 triggered with noise-bursts

Better, because allowing more dynamic range and more sound options, is using short noise-bursts or another short envelope-shaped sound source to trigger the delay.

The X multiplier in this example is working as a linear VCA.

Delay1022 & XR22VCOFT

3. Delay1022 & XR22 VCO

The combination of the Delay1022 with the XR22 VCO opens up a wide variety of fascinating sounds.

XR22 VCO AM in: Rhythm machine; XR22 VCO frequency modulated with PEAK+HOLD; Delay time modulated with sequencer & 2nd VCO:

Delay1022 X modulated

4. Delay1022 X modulated With the delay’s FB loop in inversion mode (Switch in lower position ‘inv’) and the delay’s output amplitude-modulated by itself, a 2nd ‘voice’ with interesting timbres and exponential dynamic can be produced, useful e.g. in stereo applications.

Delay In: Rhythm machine

Delay1022 & Pre

5. Delay1022 & Pre

Embed acoustic instruments and sounds via microphone or pickup.

Delay effects, flanging, phasing etc.

Pre In: Microphone/Trumpet …Delay time modulation with sinewave

Please note: The panels of the modules are made from untreated natural aluminium, hand printed and varnished. Due to this manufacturing process, their surface may have little scratches or unregularities or may slightly differ in their color appearance.


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