Bass thump is frequency related - not the type of driver. And yes, they definitely can.
they both have a earwax filter, right?
the curves are more or less customs (as far as I could see on their site), it looks like they dont have any
edit:
Brooko, is it possible to provice a FR graph with FLC8s (red, black, gold), A4 (Black back, bluenozzle, ES2, A83 combined?