I've seen very favourable reviews of the 2245 based cornerhorns using the 2123J 10" midrange handling the midrange between the 18" woofer and compression driver. Has anyone made the Professional Series 15" variants a three way in this manner? It would seem to offer the same advantages to the 15" system as the 18", though I'd assume it's more necessary with the larger driver to avoid beaming, breakup, etc. I'm getting ready to draw my final "psuedo-pi" configuration, and am considering building the cabs with the midrange sub-enclosure in place, so I can add the midrange as an upgrade path. I'll be using a JBL 2226J, 2426J, and 2370A horn per cabinet. Any experience, thoughts, or random comments appreciated. Take care! Jerrod