I bought a pair of the Polish IWATA 300 fiberglass horns. That's a JBL 2035 driver below it in a stock JBL Cinema cabinet. I am really, really pleased with how nice these sound! In my case I am using JBL 2446H compression drivers loaded with aftermarket 'cheapy' aluminum diaphragms crossed at 24dB per octave at 550Hz. I am toying with the idea of buying a pair of Truextent beryllium diaphragms.
http://theeasyview.com/members/carl_...0703175227.JPG
http://theeasyview.com/members/carl_...0703175221.JPG
I used an AP20 as active crossover and Dirac Live to optimize the room. below are the before and after room plots. As you can see a super tweeter could be easily justified, but even without the end result is very pleasant to listen to.
http://theeasyview.com/members/carl_...0703175223.jpg
http://theeasyview.com/members/carl_...0703175224.jpg
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Best Regards,
Carl Huff