Originally Posted by mayhem13
If someone can show us how to fit a horn lens on this baffle without pushing driver C to C spacing out of range, i'm all for it. There's an exponential horn from Eminence that could work with a dual midrange alignment but i have absolutely no idea how that would work. Zilch might as i think i've seen them in the background of some of his posted photo's. Maybe he'll chime in.
I wouldn't use an exponential unless someone built a mighty good case, as long as there is some desire for these to be able to two-channel. In the background, you are seeing JBL OASR 90°; I don't know the flare profile, but if there's diffraction in there, it's not apparent. They are 8.625 across the widest dimension, and 7.250 in the cutaways, into which an 8" or 10" round driver nestles nicely to minimize CTC spacing. JBL makes several products using it. It's a thread-on, but not $10 cheap.
Also in the pics, you may have seen the 18-Sound XT120 elliptical, a personal favorite. There are several inexpensive drivers available which mate with it. Sorry, I don't have a bunch of comparative data, though I do have a couple of different suitable drivers.
I posted a bunch about the JBL AE Compact systems earlier, and pics of the components. There's a nice (and cute) shallow 6" square 90° axisymmetric waveguide, thread-on, $6 each, as I recall. The 8" square 90° or 120° x 50° is significantly deeper:http://www.jblpro.com/catalog/Genera...x?FId=63&MId=2
I'm a constant directivity designer, and domes don't do it for me, unless they're on waveguides. The little tweeter in AC15 is one....