Quad output module

Quad output module
Quad output module front

This is my first step into the quad world. I want to build a system capable to deal with 4 channels. The tone control is derived from “Small Signal Audio Design” by Douglas Self second edition chapter 15. The maximum output volume is adjustable to protect your PA. You can connect the output directly to active monitors.

Specs and features

  • Bass, middle, treble tone control
  • Adjustable maximum output volume
  • Direct connection to active monitors
  • Runs on +/-12V and +/-15V
  • Power consumption around 85mA each rail

The documentation and the Gerber files for download can be found in my website.

Quad output module schematic control board
Quad output module schematic control board
Quad output module backside view
Quad output module schematic main board

A detailed description can be found in “Small Signal Audio Design” by Douglas Self second edition chapter 15.

Quad output module backside view