I will be acquiring a 3510e from another member and i need help designing a box. I have over 3.5 cubes of space available. I need to know the size of the port in square inches. This will be my first attempt at a ported box, so all the help i can get will be greatly appreciated. Does the shape of the box effect the shape of the port? Does the box need a double baffle? sorry i sound like a noob, im just looking for some professional help. thanks