I've re-surrounded the LE15A's, read the books, wasted WAY too much time browsing this site and have knocked out a box design for my beloved drivers. I've decided to post the design in hopes that smarter people will point out dumb things before I start cutting wood and wasting even more time!
My design factors are this: Make them small so my lovely wife will let me put them in the living room (they will be stereo speakers). Make them simple to build (no time for fancy joinery). Don't spend too much money. Vertically align the 075 and 375 for better imaging. I'll be using 1" MDF. I've used WinISD for the math.
Comments welcome! Thanks.