Originally Posted by
Hanginon
Lets not forget that the OP's intention is to build these physically light (so they can be pole mounted) and (probably) add subs later.
The cabinet designs that produce a more concentric wave front are all complicated and add weight. Going to a larger horn for the tweeter adds weight (if not the horn itself, the cabinet to accommodate it), and I wouldn't go near 500Hz with that driver with high power.
When the OP first started thinking of this, the idea of using a passive xover was quickly dismissed. High order passive xovers, Zoebels, etc., even with computer modeling, IMHO are nightmares, they add weight, and changes are expensive. Give me a nice, big, solid state, low-impedance output amp hooked right to that voice coil!! Even with active, high order filters are a challenge. I only suggested using a 24/db oct on the tweeter for power handling.
I think the concept of using an only 50% larger (to accommodate a second woofer, again for weight, and therefore stuffed), ported box with neo woofers has merit. I am all for perfection, but out in the real world, very very good is OK.