ive just got a sony 15" pentagon sub and i need to know how to work out the size of the box in cu ft or litres ive got the spec but carnt work it outhhttp://www.sony-europe.com/view.x?prod=31708&cat=20609&tech&loc=euhhttp://www.sony-europe.com/view.x?prod=31708&cat=20609&tech&loc=eu
can anyone help