thanks shoof, okay heres my info:
1 Digital Designs 3512
in a slot ported enclosure

the box needs an internal air volume of 2.5cuft. tuned to 35hz
I got that info from here: http://www.ddaudio.com/twelveInchOP.htm
the mounting data for the sub is here: http://www.ddaudio.com/mountData.htm
its occupid volume is .09

using WINISD (a box design program..which I dont know how to use correctly yet)
I got these numbers:
W=1.68 cuft
H=2.6 cuft (2.6 is as high as I can go)
D=1.0 cuft

port=10 x 2.68wide and 11.42 in long

the numbers just arent adding up if you could help me get the correct measurements for the box that would be great. I guess I also need to take into account the wood used in the port.

any help/guidance would be great as its the first ported box Ill be making.

Inspin