As I read it when I was investigating the W371 it is GLM which helps you to decide the best frequency to cross over to the coaxial depending on the room and the mode you choose. It isn't guaranteed that 500Hz is optimum so not using the woofers in the "one" is not guaranteed.
It can be specified
either to be cardioid
or to fill in bass nulls - the reason the cabinet is tall and the drivers as far apart as possible.
My personal interest was more in the evening out the bass than the directivity.
In any case, it seems that when the sweeps are analysed and the user preference taken into account the crossover frequency to the W371 is one of the variables.
The two mode choices are outlined in this
video