Hey mike, How about the 40Hz Horn on your site?? Seems fairly simple to build and looks like it would have a great kick. How about the plan below??? According to the designer, it can go down to about 50 hertz with excellent kick with the E140 (and I assume it might be able to go lower with the 2226) This Box seems extremely simple to build.... too simple for a folded horn. tell me what you think.
-Don