I have a preference for the MLTL and Fostex FE127e based on the numbers given
by GM at the full range driver forum.
This is my best build to date. The MLTL is wider and more shallow. The driver is
mounted 8 in. down from the top and a port tube extends out the bottom about 6 inches.
The MLTL plan calls for a 45d baffle at the port tub end (bottom) in a similar
design for the Jordan 92s. I've done a variation this which is still acceptable by
but required less wood and woodwork. No meter results available but I enjoy the
sound-- even on organ recitals.
I've also recently found a discontinued vtl (I think) design from Fostex. It looks
like a fun build.
I had overlooked this thread when it was first started. The FE127 was the first
single driver pair I bought and it's still the favorite. Lots of styles and build possibilities.