Looking for something to put these in. wouldnt mind building some, but would have to be wood/ filler, as that is all i know how to do as of now. Specs can be found here:
. The JBL 2380 horns keep breaking on me and are getting rather expensive to come by, as are the clones.
A smith horn wouldn't really be a good choice for PA due to it's directional characteristics (there's a reason why you see them used on studio monitors only really)...they can't really array conventionally.
You have to calculate the plans (it's similar to how I designed my biradial).
Buying a horn would be the easiest and most sensible route, but since this is a DIY forum, I'll echo Tony : calculate a horn, built it out of ply, and use a lot of wood filler to get it nice and smooth.
\'bits of ply round a driver\'
Try the Eminence 3006 horn. I have used them on several of my 15"/2" traps and they sound great. Its a 60x40 horn, very solidly built, shouldn't have aproblem with breaking. Maybe ad a brace to support the 2" comp driver in your box as well.