i am bulding a sub box for my subs.... it is suppose to be 7 cubic feet... and i need my pors to be 6 inch by 14.2 long.... now i have never build a ported box and i was wondering if i just build my 7 cube box then drop the ports in or do i have to minutes all the air space of the port to end up with 7 cubes
thanks for the help

 

If the box is supposed to be 7cuft net, you have to add the volume of the ports and the displacement of the subs themselves to get the total box volume....