Re: apogee 3x3s2 vs eaw 650z
I can't speak to the Meyers, but I have first hand experience with the old Apogee SR1 and SR2 systems, and the processors for those definitely used sliding, or at least shifting, crossover points. At low power levels, the crossover point from 15s to horn was very low, probably in the range of 500 Hz. Once you pushed them harder, the crossover point moved higher, letting the 15s do more of the work. They went from sounding pretty good, to rather nasty, when this happened. I haven't used the 3x3s, so it's possible they didn't use the same technology, but the SR series certainly did.
GTD
Uh-oh, I must be losing my mind! It's been too long. The SR2s were Renkus, not Apogee. Please disregard most of that crap above :blush: (The part about about the SRs sounding OK at low level, and getting harsh as they got loud was correct.)