Are these what you are trying to clone?
[IMGHTTPDEAD]http://pic3.audiogon.com/i/c/f/1279327093.jpg[/IMGHTTPDEAD]
'Nice looking speakers! One review I read priced them at close to $10K. With that in mind, it makes a lot of sense to want to make a similar design for much less.
Please keep us posted as to how this goes! I really like the look of those types of drives, such as the Morel's. The measurements I've seen around the net suggest they often have higher distortion numbers when compared to a more traditional design. With multiple drivers, that might not be an issue. They sure look nice. And I bet you'll have great low end extension for the foot-print these take up on the floor. Multiple smaller drivers has always been a neat idea - best of luck, I can't wait to see how these turn out!
Jim