So- I built one of the mid horns, using 3/4 ply, a 12X12X10 rear chamber, using one of my peavey scorpion 10", and it plays very well, indeed. Very nice and smooth. Now for some integration questions- If I stack two vertical, I get:
Better pattern control (increased directivity)
3 to 6 db more output
lower cutoff freq
...right?
So I'm going to try a 2" EV driver, on a big ol HP940 horn,
two stacked mid horns, and possibly a 4Pi cabinet/woofer for the bottom. Now thats looking like nice PA stacks to me...
Larry Acklin