The big baffle is a two dimensional horn… complete with coloration and distortion… you can test this at home with a square of cardboard, cut a hole and speak thru it w observer or recorder… compare…
To the OP the Magico you speak of used renown Scanspeak ring radiator… sort of a large two dimensional moving baffle… ha.
my preference, expressed as $ and emotional investment are for minimum baffle designs.. TAD and Vandersteen… my Apogee keep me quasi… honest..