Has my feeble memory finally failed me, I vaguely recall a 7Pi-18, but may well be mistaken.

I was recently looking into the "how high up can you use an eighteen" question. I like the idea of the increased directivity of an 18 over a 15, but have never played with an 18. The JBL 2241 certainly looks smooth enough on paper to try fairly high up - what are your thoughts on that? Do you have suggestions for an 18 that would sound good crossed over high enough (ballplark 800 Hz) to be used in a two-way?

Thank you!

Duke