>>Since the EP-500 has a brick-wall cross-over implementation, there is no extension of output above the cross-over, thus making the EP-500 even more difficult to localize (easier to place) in a room.

I thought the brickwall filter was used to cut off extreme low frequencies (10Hz-type stuff), and that the crossover to mains was a conventional 24 db/8va filter. Not 100% sure though...

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8