I think you can find adapters(sp) for mating the driver to the horn. Do not rule out used as a source for TAD td-4001 drivers. I paid $1150 for my pair of used 16 ohm 2" td-4001 compression drivers. Look at Agon, and try local pro sound dealers in your area. A pair needing diaphragms can be had for small change. Then you can buy Radian replacement diaphragms for short money and you have some killer compression drivers. I am using my tad td-4001 in 31" x 31" JBL 2360a biradial horns. There is no horn shout. This is a killer combo with my 1.8 wpc 45 mono block amps driving the horns. Good luck! John C.