When designing my Moog Ladder PCB it was a goal to bring out the 6, 12 and 18dB filter poles. I have done it with an additional PCB of the same size. You can easily stack the PCB on each other. The connectors are lined up for easy connection. The schematic follows the same way as the output stage of the basic PCB. With the circuitry to compensate for the gain loss with increasing emphasis. I added a basic level indicator and a linear VCA as well.

Moog Ladder Filter Add On PCB

Moog Ladder Filter add on schematic:

Moog Ladder Add On schematic

Connecting the PCB’s:

Moog Ladder Filter connecting the PCB’s

Moog Ladder Filter basic PCB mounted:

Moog Ladder Filter basic PCB mounted

Moog Ladder Filter add on PCB mounted:

Moog Ladder Filter Add on PCB mounted

Moog Ladder Filter Faceplate:

Moog Ladder Filter Faceplate