As often happens, I got carried away with cool ideas and overdid it. The speakers use an active crossover and have separate woofer and midrange/tweeter enclosures. The midrange and tweeter units can be used by themselves, if portability is required, by changing a few jumpers inside the crossover.
The woofer boxes are 14" wide by 18" deep, and stand 30" high. The midrange/tweeter boxes sit on top of the woofer boxes, and are 7" square by 12" high. They are painted gloss black (DuPont IMRON epoxy-based paint).
Of course, the ultimate test is to listen to them. It was definitely worth the work! Get in touch if you would like to come hear them...
I recently (April 1999) upgraded the tweeters from Vifa brand aluminum domes to Focal brand titanium oxide inverted domes. The mounting plates for the Focal tweeters were cheezy, so I machined some nice aluminum mounting plates [picture]. The photo on the left is pre-upgrade, and the one on the right is post-upgrade.
Specifications for audio geeks
References which I found useful in designing and building the speakers