there is a box i saved from the inhuman website and i would like yall to tell me the equation to find how many cubes it is.

it is slot ported and lxwxh is 28.25 x 23.25 x 16

the port is 28.25 inches long and 2 inches wide and goes down like 14 inches and then curves at a right angle 7.5 inches long and if your still stumped it is on www.beyondaudio.ca.tc
under boxes and it is the prelude box

also how would 2 brahmas or 2 xxx's sound in it .they are 12's