I have a hydra 26 and mount which is perfect for the 24" x 24" footprint of the 60.
I have both listed for $395 total, way less than the Radion 15 on its own.
FS: AI Hydra 26, EXT mount system and AI Director
http://www.canreef.com/vbulletin/sho...d.php?t=111598