Making an enclosure for an idmax12 v.3

ok first thing dont put a round port in, makes it look cheap, make a slot ported box. u usually use a 4inch dia port so to work out the area of this u need to multiply 4 by pie (3.14) this gets you 12.56. so now we know the length u want the port to be. so say ur port was to be 6 inches in length, u would divide the number 12.56 or 12 by 6 and u wud get 2 and so this is the 2D dimensioons of ur port.

now from ur box size which is 2.75cubic feet and the 12volt calc, the lenght of the port  at 32hz cums to around 9 inches. so ur port will hav to be 9 by 6 by 2.

If u dont want to do this then remember the 12.56 still equals a 4inch diameter circle so ur port wud have to be 9 inches in length if a round port. but i wud personally go with a slotted port.

now positioning is totally of ur choice. just make sure the port has around 1-2 inches of clearence at the end inside the box and u will be fine. the positioning needs to be thought out because remeber u might get stuff blockjing the airways so keep the port well out of the way of any obstacles. jus put it at the front, best place in my books.

k go to this page to get an idea of wat  a slot port looks like http://www.audiooutfitter.com/images/items/abb121n.jpg.

k the measurements i gave you were 6 by 2 by 9. so dat means the front square section dat u can see shud be 6 inches tall and 2 inches wide or it cud even be 12 inches and 1 inch wide. to work out da tallness of ur slot jus divide da required tallnes by 12 so if u wanted a 6 inch tall port u wud divide 12 by 6 and get 2..........and so on.

the extra 9 inch dimension means dat da port shud reach 9 inches from surface into the box. so ur box will be a 13 inch deep box and da port will reach 9 inches into da box

the dimensions of the port are interior dimensions. so if u add da mdf, from one side to another the port will make 2 inch plus 0.75 by 2= 3.5inches wide.

but dont just use a whole new port, use the sides of the box to make part of the port

look again at the link of how the port is just the front piece cut short and an extra part added along inside which forms the port

nooooo

datrs wrongfrom da front da port will be 2 by 6 and da legth will be 9. so a prism of 6 by 2