I tried to set Mains to small and Center to Large, but MCACC wouldn't let me, so I have them all set to Small with a 50hz crossover.
The first thing I'm playing is Police, Certifiable, because I never was satisfied with the bass. Now I can hear much more detail in the mid to upper bass that I felt was missing before. And when low notes are hit for an extended period for effect, it's sounds amazing.
Notice that it's the box that isn't square.