I had a lot of trouble believing that a 15" 2-way system could sound the way everybody said they did, but they surely do. All the sweetness of my tweaked Buschorn MK2s, and they may be as accurate or more so, I need lots more listening time. Of course they have more range and play much louder.

I went back and forth between WinISD and Wayne's PiAlign software, using his emailed box plans as a reference, to arrive at the box tuning. I mitered the panels, taped them together, glued them, then rolled them up a la Terry Cain because I couldn't think of any other way to hold all 8 sides together and straight. The sheen comes from 8 rubbed-in coats of Tung oil. No compound or wax yet. The horn flare is the PE el cheapo wrapped with Duct Seal. The port's in the back, which is finished like the fronts.
Many thanks to everyone who answered my questions over the last few months while I got geared up to do this project.

John