FB | IG

Altar
is a voltage controlled 3-pole, 18dB/octave state variable filter.

Altar
The configuration of the filter can be smoothly crossfaded from BP to LP to HP. This unusual filter type arrangement brings out very nice harmonics and nuances. It is really suited to CV control. The CV input has an attenuverter.

Resonance is under voltage control with attenuverter as well allowing for great timbre modulations. It is particularly useful to recreate accent patterns à la 303 which boost the resonance a bit.

There is a gain at Altar's input to beef up your signal which then distort the filter core.

The filter tracks 1V/oct for 4-5 octaves and can turn into a very sweet sine oscillator. Try using it with

Miasma
as a waveshaper!

Altar
has been designed by Mathieu Fröhlich (creator of Squarp's Hermod) as part of a dream synth he is working on.

Altar on Modulargrid

Video demos on Instagram

Controls
  • Gain control to distort the filter core
  • Color to go from band pass to low pass to high pass filter
  • Resonance
  • Frequency with 1V/Oct
  • Attenuverters on Color, Resonance and Frequency CV
  • Technical characteristics

    3-pole filter

    18dB/oct cut

    1V/Oct with trimmer on the PCB, tracks up to 4-5 octaves

    Current consumption

    +12V: 35mA | -12V: 30mA | +5V: 0mA

    Size

    12HP | 25mm deep

    Price

    TBA

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