Mutable Instruments Ripples Eurorack Filter Module

Mutable Instruments Ripples Eurorack Filter Module

Product code: mblripples

Ripples from Mutable Instruments delivers a classic, big-sounding analogue four-pole filter in a small 8-HP Eurorack module.


  • Mutable Instruments Ripples Eurorack Filter Module

    Ripples from Mutable Instruments delivers a classic, big-sounding analogue four-pole filter in a small 8-HP Eurorack module.

    Main Features

    • Fully analogue filter
    • Three different filter modes
    • Self-oscillation available in all modes
    • 4-pole LP output available through VCA
    • 8 HP Eurorack module

    Ripples continues Mutable Instruments' lineage of warm and tasty filters started by the Shruthi SMR4 mkII and 4-Pole Mission.

    Read More


    3 filter modes are available: 2-pole band-pass, 2-pole low-pass, and 4-pole low-pass.
    Self-oscillation is available for all modes and produces a clean sine-wave on the LP4 output. Unlike many classic 4-pole designs, this filter does not suffer from 'loudness drop' when resonance is increased. The resonance loudness compensation circuit brings a slight tone coloration reminiscent of the Roland SH/Jupiter filters, with a very round and 'liquid' resonance.
    The 4-pole low-pass output is additionally sent to a VCA. This makes Ripples a good 'final stage' module for an inexpensive/space-constrained subtractive synthesis synth voice.

    Specifications
    Inputs
    Signal in
    Frequency CV 1 (1V/Oct)
    Resonance CV. Self oscillation starts at 4V. Control voltages above 5V are non-linearly compressed, for fine control of resonance overdrive
    Frequency CV 2 (with bipolar attenuator, from -1V/Oct to 1V/Oct)
    VCA level. Control voltages above 5V are non-linearly compressed.
    Controls
    Cutoff frequency, 18Hz to 18kHz
    Resonance (self oscillation at 80%)
    Attenuverter on Frequency CV
    Outputs
    2-pole BP
    2-pole LP
    4-pole LP
    4-pole LP attenuated by VCA
    Technical Characteristics
    Fully analogue, based on SSM2164 low noise/distortion quad VCA chip, and LM13700 OTA for that extra bit of non-linearity.
    Frequency CV inputs impedance: 100k.
    Audio input impedance: 75k.
    Resonance and VCA CV input impedance: 30k.
    Open-source hardware.
    8-HP.
    Current consumption: +12V: 35mA, -12V: 35mA.

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    UK Non-Mainland: £ 12

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  • 1 Recommended Accessory

  • Additional Information

    Brand Mutable Instruments
    Condition New
    On demo in store No
    Documentation http://mutable-instruments.net/modules/ripples/manual

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