These are pretty poor measurements(I mean my technique/care not the speaker's output).
I had it set to 15kHz upper limit and a lot of clutter around the speaker which I mostly windowed out. Anyway, enough fat:
No surprise that taking the grill off improves things a bit, but none the less these are great either way. Just to compare it with the AX5:
The difference is pretty small really. Wish the A5X was rear ported. I prefer its more industrial looks.