circuit-abbey-gravity-well

Circuit Abbey Gravity Well

Voltage-controlled asymmetrical wavefolder & warper

12 HP Eurorack module

Circuit Abbey's original 2010 Eurorack module: a voltage-controlled asymmetrical wavefolder built around a DC-coupled Diode Breakpoint Warper. A main signal runs through an input attenuator into the warper while four bipolar CV channels — Inclination, Eccentricity, Longitude and Latitude, each with attenuator and bias — are summed to warp the positive and negative halves of the waveform independently. Results range from subtle asymmetry to heavy folding and voltage-controlled 2nd/3rd-harmonic distortion.

Features

  • Asymmetrical wavefolder / wave warper based on a Diode Breakpoint Warper
  • Four independent CV warp channels: Inclination, Eccentricity, Longitude, Latitude
  • Per-channel attenuator (Atten) and Bias offset on every CV channel
  • Inclination warps both waveform polarities equally
  • Eccentricity increases positive warp while decreasing negative warp
  • Longitude increases positive-half warp only
  • Latitude increases negative-half warp only
  • DC-coupled throughout — warps audio, LFOs, envelopes and pitch CV
  • All inputs bipolar: negative CV reduces the Bias-set warpage
  • Main Input has its own attenuator and can also accept CV or DC
  • Doubles as a voltage-controlled distortion device (2nd/3rd harmonic)
  • Summing matrix mixes all four CV channels to drive the warper

Controls & Jacks (15)

  • Latitude CV In
  • Latitude Atten
  • Latitude Bias
  • Longitude CV In
  • Longitude Atten
  • Longitude Bias
  • Eccentricity CV In
  • Eccentricity Atten
  • Eccentricity Bias
  • Inclination CV In
  • Inclination Atten
  • Inclination Bias
  • Input
  • Input Level
  • Output

How-To Guides

  • Voltage-Controlled Wavefolder
  • Static Bias Fold
  • Voltage-Controlled Harmonic Distortion
  • VCO + Sub-Octave Cross-Warp
  • Warp a CV / LFO

Explore the interactive Gravity Well panel on BleepDex — tap any control to learn what it does.

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