In theory, what is the best way to mount two sub woofer drivers in one encloser? All on one face? Or on opposite sides of the box? If you were mounting four drivers, would you want them all on one side, on four opposing sides, paired on opposite sides, etc.? I assume all drivers are wired in phase with each other. Is there any advantage in wiring out of phase(if mounted on opposite sides of the box)? Thanks for the education.