I just bought a sub and the specs say that it needs a 1 cu. ft. box. I
would think that the company would allow for the space that the driver
takes up in the box. Is this a proper assumption.

Also, when I mount my driver should I cut away the carpet that is glued
to the box? In a 1 cu. ft. box should I bother with coating the inside
with a sound deadening spray?