facing your subs in different directions will change the sound coming from them.

this all depends on the box you have, the sub, and your car and cabin.

to get the best results....spend a few hours trying out different positions.

i have a sedan and like to have my sub facing the rear bumper.

in my friends hatchback, he faces it towards the window, so it will deflect right into the cabin.

try different positions yourself and see which you like the most.