I have had this speaker project in my head for many years. It started around 2006 when I was working with Soundeasy to design my parents some speakers.
Well it is 2020 and i am going to pick up where I left off.
This project was born from just the drivers I had on my shelves. DIY speaker builders tend to have a collection of drivers on shelves. When you see an interesting driver go on sale it is very tempting to pick a few up. Well I had some passive radiators and two identical subwoofer amps that I wanted to put into a system.