Ripples Assembly Instructions

Important note: This is a guide to assembling our finish-it-yourself kit. The SMD parts are already populated, and the firmware is pre-programmed.

Trimmer

Install side-mount trimmer into PCB as shown. Turn it over and trim excess leads.

Mutable Ripples Trimmer Pot
Mutable Ripples Trimmer Pot

LEDs

Place the 9mm spacers onto the LED leads. Then place them into the PCB: pink top, green bottom. Align the cathode (shorter lead, flat side) toward the closest side of the PCB, as shown below.

Ripples Cathode Lead
Ripples Cathode Lead
Ripples Placed LEDs
Ripples Placed LEDs

Jacks

Place the jacks into the PCB as shown below. Carefully turn the project over to solder in place. You can use the panel to ensure the jacks stay aligned.

Mutable Ripples Jacks
Mutable Ripples Jacks

Slide Switch

Place the slide-switch into the PCB as shown below. It goes in either way. Make sure it is laying flat against the PCB, then carefully turn the project over to solder in place.

Mutable Ripples Slide Switch
Mutable Ripples Slide Switch

Power Header

Place the 10-pin power header on the rear of the board exactly as shown below, with the notch aligned with the notch in the silkscreen. Carefully turn over and solder in place.

Mutable Ripples Eurorack Power Header
Mutable Ripples Eurorack Power Header

Potentiometers

Place all of the pots into the PCB as shown below for the Ripples Eurorack Module. Carefully turn the project over to solder in place. Again, you can use the panel to make sure that the pots all stay in place.

Mutable Ripples Potentiometers
Mutable Ripples Potentiometers

Panel

Place the panel over the project carefully.

Mutable Ripples Panel Placement
Mutable Ripples Panel Placement

Place the panel over the project. Gently tighten (not too much!) the pot and jack nuts.

Mutable Ripples Pot and Jack Nuts
Mutable Ripples Pot and Jack Nuts

Now place the Rogan knobs on the D-shaft Pots. You are now ready to test your module! Plug it in and make sure it’s working ok, then proceed to the calibration instructions.

Mutable Instruments Assembled Ripples Eurorack Module
Mutable Instruments Assembled Ripples Eurorack Module

V/O Calibration Procedure

  1. Set the FREQ knob to 10 o’clock (exact position does not matter).
  2. Set the RES knob to its maximum position. Disconnect any input signal or FM modulation CV.
  3. Connect the note CV output of a well-calibrated keyboard interface or MIDI-CV converter to the V/OCT input.
  4. Listen to the tone at the low-pass output.
  5. Adjust the trimmer resistor on the side of the circuit board until the musical intervals played on the keyboard are correctly reproduced (actual note values do not matter, but when playing an octave, it must sound like an octave).

The filter is designed to track well over 4 octaves, but is not temperature-stabilized.