Cubic Ft of this sub tub? Im a little rusty on my math for finding the volume of a cylinder tube?

Question

http://www.crutchfield.com/App/Product/Item/Main.aspx?g=510&i=023GT1200T&tp=112&tab=features_and_specs

13-1/16"W x 19-1/16"L x 13-1/16"H

Answer 1

Just divide that number by 1728 (12 x 12 x 12) will give you the cubic feet.  This number is about 1.477 cubic feet.  You need to remember that those are the outside measurements so the internal volume is likely much less.  Also you need to consider the sub displacement.

Good Luck!!!