bastl-instruments-cinnamon

Bastl Instruments Cinnamon

Multi-flavored state-variable filter with unique character

5 HP Eurorack module

Cinnamon is a Bastl Instruments state variable filter with simultaneous low-pass, high-pass, and band-pass outputs. It features self-oscillation, two character switches for tonal shaping, overdrive mode, V/Oct tracking, and a compact 5HP form factor.

Features

  • Voltage-controlled cutoff frequency
  • Simultaneous low-pass (12dB/oct), band-pass (6dB/oct), and high-pass (12dB/oct) outputs
  • Volt-per-octave CV input for pitch tracking
  • Second CV input with attenuator knob
  • Input level knob with Drive switch for 0-2x or 0-10x gain
  • Resonance control up to self-oscillation
  • Two Character switches for resonance waveform shaping (sine, edgy, sawtooth, combined)
  • Self-oscillation produces phased sinewaves (0/90/180 degrees) at LP/BP/HP outputs
  • V/Oct trimmer for fine tracking adjustment
  • PTC fuse and diode protected 16-pin power connector
  • 5HP width

Controls & Jacks (17)

  • Cutoff Frequency— Sets the base cutoff frequency. The actual cutoff is determined by the sum of this knob and the two CV inputs.
  • High-Pass Output— High-pass filter output (12 dB/octave, 2-pole).
  • Low-Pass Output— Low-pass filter output (12 dB/octave, 2-pole).
  • Input Level— Controls the gain of the input signal. When Drive is OFF, ranges from 0 to 2. When Drive is ON, ranges from 0 to 10 for overdrive effects.
  • Left CV— Volt-per-octave CV input for cutoff frequency control.
  • Audio Input— Audio signal input to the filter.
  • Right CV— Secondary CV input for cutoff frequency modulation.
  • Band-Pass Output— Band-pass filter output (6 dB/octave, 1-pole).
  • Resonance— Emphasizes the cutoff frequency in the spectrum. At maximum, the filter self-oscillates at the cutoff frequency, functioning as an oscillato
  • Character Lower— Character switch for resonance response. When ON, adds saw-tooth character to the resonance oscillation. May disrupt V/Oct tracking.
  • Drive— Overdrive switch. OFF: Input gain 0-2. ON: Input gain 0-10 for overdrive effects. Dramatically affects output when combined with Character s
  • FM— Attenuverter controlling the depth of FM modulation from the Right CV input applied to cutoff frequency
  • Right CV Attenuator— Controls the intensity of modulation from the Right CV input. Fully counter-clockwise disables the Right CV input.
  • Character Upper— Character switch for resonance response. When ON, adds edgy sharp character to the resonance oscillation. May disrupt V/Oct tracking.
  • Cutoff— Sets the base cutoff frequency. The actual cutoff is determined by the sum of this knob and the two CV inputs.
  • Attenuator— Controls the intensity of modulation from the Right CV input. Fully counter-clockwise disables the Right CV input.
  • V/Oct Trimmer— Internal trimmer to calibrate volt-per-octave tracking of the filter

How-To Guides

  • Classic Low-Pass Filter Sweep
  • Sine Wave Oscillator via Self-Oscillation
  • LFO-Driven Cutoff Modulation
  • Overdriven Character Filter
  • Sawtooth Self-Oscillating Bass
  • Three-Band Parallel Processing
  • Keyboard-Tracked Filter Resonance
  • Gentle Ambient Band-Pass Formant

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

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