This module is a 12-stage phaser or all-pass filter with resonance control. When the filter’s output is mixed with the input, this creates notches in the frequency response. Classic phasing sounds are achieved by modulating the frequency control with an LFO. It can also be used as a 4-stage filter by removing the top PCB and jumpering pins 1 and 2 of the pin connectors together.
This module uses two circuit boards sandwhiched together. It's designed for 12V systems and can be easily modified for use with 15V systems.
For complete descriptions of the way the module is used, and how to build it, including schematics and parts list; download this PDF file.
Boards and panels are available now. Price for a 2 PCB set is $10.
Unfinished eurorack
panels are available for this project, they are 6HP and cost $8 each.
There is
more information here about panels. If you're interested in drilling your own panel for
this project, feel free to use my
drill guide. That image should be printed at 300dpi for proper
scaling.
