Bill,
I used the desgin for the Tuba 24 for the bottom half of this cab, using 2 10" BP101 Eminence spkrs, and 2 more for the top half, front loaded at an angle. Cab is 25" wide over all. The top half is vented through the gap in the face, and the spkr chamber has an angled back to avoid reflections or standing wave problems. Not sure if the design makes sense, but on stage I have great volume and out front the projection is pretty astounding. Your thoughts?
Rick
I think one thing Bill will point out is the drivers placed side by side.
I think if it was an XF210 design on top of the T24 that it would be pretty gnarly granted that they had a crossover and two different channels powering them.
I imagine that 20 inch T39 and SLA pro could get together to one monsterous hybrid