after-later-audio-benjolin

After Later Audio Benjolin V2

Self-patching chaos oscillator with built-in Rungler

20 HP Eurorack module

The Benjolin V2 is a chaotic Eurorack synthesizer featuring two oscillators, a Rungler stepped CV generator, and a multimode filter. The oscillators feed data and clock into a shift register whose R2R DAC output can be mixed back into the oscillators, creating a self-referential chaotic system constantly seeking balance. It is a generative, unpredictable instrument capable of evolving textures, chaotic melodies, and experimental noise.

Features

  • Two oscillators with frequency and fine tune controls
  • Rungler stepped CV generator using R2R DAC from shift register
  • 8/16 and 127 step modes for Rungler
  • Single and double internal clock rate modes
  • Externally clockable via Clock Input
  • Multimode filter (lowpass, bandpass, highpass)
  • External filter input with blend control
  • Reworked oscillator and filter sections adjusted to Eurorack levels
  • Support for Turing Machine expanders
  • Rungler CV output for modulating external modules
  • Rungler Data and Clock outputs for external patching
  • Individual Osc1 and Osc2 outputs

Controls & Jacks (37)

  • Osc1 Fine Tune— Fine frequency adjustment for oscillator 1
  • Osc2 Fine Tune— Fine frequency adjustment for oscillator 2
  • Filter Resonance— Controls the resonance/emphasis of the multimode filter
  • Rungler CV Amount— Controls the amount of Rungler stepped CV modulation applied to the oscillators
  • Clock Rate— Controls the clock speed for the shift register and Rungler
  • External Input Blend— Blends between internal oscillator mix and external filter input
  • Filter Cutoff CV— CV input for modulating filter cutoff frequency
  • Osc2 Frequency— Controls the frequency of oscillator 2
  • Audio Output— Main audio output from the filter
  • Osc1 Frequency CV— CV input for modulating oscillator 1 frequency
  • Rungler Steps Mode— Selects between 8/16 or 127 step modes for the Rungler
  • Filter Cutoff— Controls the cutoff frequency of the multimode filter
  • Rungler Clock Output— Clock output from the Rungler
  • Osc1 Output— Raw output from oscillator 1
  • Osc2 Frequency CV— CV input for modulating oscillator 2 frequency
  • Clock Rate CV— CV input for modulating the internal clock rate
  • Osc2 Output— Raw output from oscillator 2
  • Rungler Data Output— Raw data output from the shift register
  • Osc1 Frequency— Controls the frequency of oscillator 1
  • Mixed Oscillator Output— PWM mixed output of both oscillators sent to filter
  • XOR
  • PUL 2
  • STEPS
  • RATE
  • Clock Input— External clock input for the Rungler shift register
  • External Filter Input— External audio input for the filter section
  • Filter CV Amount— Controls the amount of CV modulation applied to filter cutoff
  • Rungler CV Output— Stepped CV output from the Rungler shift register
  • Output Level— Controls the output level of the module
  • Filter Mode— Selects between different filter modes (lowpass, bandpass, highpass, etc.)
  • RATE
  • DBL
  • Steps Mode— Selects between 8/16 or 127 step modes for the Rungler
  • Clock Rate / Double— Controls the clock speed for the shift register and Rungler
  • Ext Blend— Blends between internal oscillator mix and external filter input
  • Steps Mode Switch— Selects between 8/16 step and 127 step modes for the Rungler shift register
  • Clock Double— Selects between single and double clock rate for the shift register

How-To Guides

  • Basic Self-Patching Chaos
  • Slow Evolving Ambient Texture
  • Rungler as External CV Source
  • Synced Rungler with External Clock
  • External Audio Through Benjolin Filter
  • Percussive Rungler Blips
  • Highpass Chaos Shimmer
  • Expanded Rungler with Turing Machine Expander
  • CV-Controlled Clock Rate Sweep

Explore the interactive Benjolin V2 panel on BleepDex — tap any control to learn what it does.

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