LineSource said:Some of the latest 3-way designs use modern speaker and crossover technology to put most of the human vocal range on one slightly larger midrange (Linkwitz 8" ~ 120-1,400Hz)...
...Magnetar and Lynn Olson are experimenting with 12" midrange.
A 12" used as a midrange would start beaming for it's higher frequencies... Does anyone know what is the exact relationship between a driver's diameter (or radius) with the frequency at which it starts beaming?
Deep male voices can go as low as 80-90 Hz so you should crossover no higher than that to be safe. For non vocal material it might sound ok a little higher but I would l would not count on it. I would shoot for 80Hz or lower.