To stack or not to stack cabs

[Wireking1]

Mike Gordon stacks. Something about line array and having more clarity straight out from the speakers. I guess it gets boomy as you get off the axis. I love the guy, but I don't understand half what he says when describing his rig. Plus, he rocks the scarf! About 5 minutes into this video he briefly explains why he keeps stacking his cabs higher:

http://www.youtube.com/watch?v=8NDxginP3fk

For the record, I flip 2x10's so they are vertical an stack also.

 

[Bass_Pounder]

Sometimes I have found it useful to split my speakers and put one on each side of the drummer. That spreads-out your sound field, the guys on the other side of the stage hear you better.

Also you get a better idea of the blend with the other instruments rather than so much of your own bass.

Your bass & amp often sound better farther away than when you're right in front of the amp too. (Some people say mine sounds best way-way far away)

Two separate low end sources (splitting up your cabs) is the worst thing you can do for the people trying to hear you out in the room.