I never got into the split idea...like GM said we worked
on a 210 that could fit through a standard doorway.
These speakers can be taken apart...
The subs are 4x4x2, the mid bass side walls bolt to the wings and back chamber and voile!
Voice of the Theater anywhere....
http://www.superbadcat.com/images/stereo/511e_18.jpg

I can never go back to wife friendly speakers...