Thats with the ending net volume being 3ft^3. So it could be external or in the enclosure. you would just need to adjust your gross volume while building it for all displacements if you build it with it inside the box.is that with an external port??
alright i'll just do that. let me know how long you need the ports and i'd be willing to help a brotha out, just cover shipping.If your using 6" PVC with no flared ends the port needs to be 16.35"
2.5 is also what IA reccomends, so i'll just adjust the box to that...I also wouldn't do 3 cubes NET though...
2.5 TOPS...
nG