LOW

Analog Low Pass Gate with Filtering Support.

difference?
$20
LOW

This is an analog low pass gate incorporating Vactrols. It uses 2nd order RC filter as the core of the circuit.

Functionality

  • Better suited for thick bass sounds.
  • Has no resonance.
  • Frequency can be modulated via CV.
  • A momentary BLAST toggle to make the CUTOFF reach the highest frequency (which sounds great.)

Here are some ways to use this module:

1. As a Low Pass Gate

  • Use a GATE signal as the CV.
  • Make sure the GATE is very short.
  • Use the CUTOFF control to limit the frequency range.

2. As a Low Pass Filter

  • Feed a fixed voltage to the CV. (Probably 3.3V from the +V in the input section)
  • Use the CUTOFF control to set the cutoff frequency.

Inputs

  1. AUDIO Main audio input to be filtered
  2. GATE/CV CV or GATE input to trigger the Low Pass Gate
  3. V+ 3.3V outlet (this is not an input, but can be fed to CV input to act as a low pass filter)
  4. NC Not connected
  5. NC Not connected

Outputs

  1. AUDIO Filtered audio output
  2. AUDIO Filtered audio output
  3. AUDIO Filtered audio output
  4. AUDIO Filtered audio output
  5. AUDIO Filtered audio output

Controls

  • CUTOFF: Controls the cutoff frequency of the filter.
  • BLAST: A momentary toggle to make the cutoff frequency the highest possible.

Additional Parts

This section is only relevant if you are buying the semi-assembled module. You have to source & solder the following parts. You can check our guide on common parts for where to source these components.

  • 2.54mm Header Pins (5-pin) - 2
  • Circular Pin Header Sockets (5-pin) - 2
  • 50K Potentiometers - 1
  • Vactrols - 2