surprisingly, he was almost 100% accurate, but he calculated the volume wrong. and the 'baffle' where the subs are gonna be mounted was like 15.93" instead of 16 //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
like i said, he was VERY accurate. and thats hard to do with pencil and paper. props jelly.
if the box is 37" wide, its just about 5.9 cubes. the tuning is closer to 25hz.
everything is just about dead on. angles are exactly as in your picture. if you want, i can dimension all the angles for you so you know how you have to cut them too.
and if i knew how - i could extrude this shape to make a '3d box' but i forget how that works. so feck it. //content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gif