People often say that on this site - anyone care to explain?
Somebody please clarify but I'm gonna take a shot w/ what makes sense in my own head. In XY, the mics are coincident (basically taking sound from ONE point in space, roughly), whereas other stereo patterns are taking from TWO points in space, therefore having the ability to sum the amount of bass up from those two points (as opposed to both mics pulling from the coincident spot).
I've also read many times that OMNIs are more prone to bass pickup. If my theory above holds true, then think of OMNIs pulling from more of a 'spacial area' than, say, cardioids...therefore, picking up more bass.
I know nothing though....so don't etch my words in your heads..