It was pain tryin to read it.my diagram is the ****...it was made with OLD SCHOOL MS PAINT!
that is an estimate for internal volume. correct me if i am wrong, but it is probably closer to 3.5 with the subs in it. the box empty is close to 3.8 or 3.7those are all external, 3/4 MDF...and the people at GS are dicks!