EON woofer wave guides?

I'm interested in trying these 15" waveguides. I'm using that term loosely...
Can I buy these from JBL pro? Any suggestions?


http://www.jblpro.com/images/default..._nogrill_r.jpg

How do they work,,,?

I've wondered about those too. Maybe they work on similar principles to the Karlson enclosure?

I thought of that too,,,A side by side comparison audition would be interesting,, Or polar plots,,

http://www.diyaudio.com/forums/multi...they-work.html I'll know soon. I just ordered one for testing.