I'm over 40, how
dare you ask?
Keep going, this is giving me great ideas.
I've been reading about horn designs. Some of the rear-loaded horns using a small full-range driver seem reasonably sized, practical to build, and certainly interesting. They do seem to roll off in the high end, above 13-15K or so. I suppose a tweeter could be added (a horn tweeter, natch). And I could use a flea-power amp. Anyone play with these? Something like a DIY Buschhorn.
http://www.apah69.dsl.pipex.com/buschhorns/buschorns.htm
http://melhuish.org/audio/index.html