Phasecorrect,
I agree with Audiofeil. There must be something wrong with your set up. You dont say what you have, but maybe you are not completely phase corrected!
Macdadtexas,
I see you use Maggie 3.6r, so bass information should not a problem for you.
There is a world of happiness awaiting you if you have not modified the 3.6r xover/wiring and fuse in them from stock. See MUG. Although doing these mods will blow your mind, surely you have a set up issue too as you have a very capable speaker regardless?