[I find I never have enough crossover parts from my experiments!]
This coming spring, got half a dozen experiments lined up for both home and PA. Most will fail. NP

One is to experiment with dual ALPHA 6C (4 ohm) in series for 8 ohms and 97db sensitivity. Stuck with the APT 80 so far, as there is little else at foreseen project price. Woofer or sub woofer undecided.

The new Bms 4524 looked promising but can't find it anywhere.
http://www.bmspro.info/index.php?show=item&usbid=10278&id=5059987

When crossed over in the 3100Hz range I preferred the Alpha 6 to the Beta 8. Find the sound more "open". Need to try 2800 to 2900 on the Beta 8. [The limit of the apt 80].

I think dual alpha 6c's with an APT 80 could make a heck of a nice little satellite for home theater (left, right, center)! [panel TV of course]

Not quite the level you are working on though.
Would like to here how your projects turn out. I'll stay tuned.

Barry