http://www.birotechnology.com/FAQ/boxsize.html#floorstand
This article talks some about bookshelf/monitor v. floorstanding design.
"I'm wondering if it is easier to integrate a sub with a more full range speaker, than with a bookshelf that may only go to 40 or 50 Hz"
The deeper down low you can cross, the phase and directionality issues become easier to integrate to a certain extent--longer wavelengths. The question is still to tough to answer given all the variables.
This article talks some about bookshelf/monitor v. floorstanding design.
"I'm wondering if it is easier to integrate a sub with a more full range speaker, than with a bookshelf that may only go to 40 or 50 Hz"
The deeper down low you can cross, the phase and directionality issues become easier to integrate to a certain extent--longer wavelengths. The question is still to tough to answer given all the variables.