ok, i did what u said and entered in manually all of the parameters for the sub. The port for the box came out to be 4 inches in diameter and 13.9 inches in length which seems to be correct. However the volume it gave me was 4cf and the tunning frequency was 22.4hz. This numbers dont seam to be right. A 4cf box is way to big for this box, and tunning it to 22hz, isnt that a little low??
Any help much appreciated