Background
In one of the articles, we outlined a new way of designing speakers using the 3-way WiFi/DSP board. For this project, we will show how to apply that design approach by retrofitting some passive speakers with these new boards. The author has a large collection of passive speakers that were designed over the years, so this article will document the design process for 3 different designs. And yes, these should all be done and ready as gifts for Christmas of 2018.