Hey guys whats up. I have a friend that can make me a box, but i'm lookin for a box design he can work off of. Im lookin into a ported box. My subs are Fi SSD 10 with flatwind coil. I listen to everything but more into Rap and techno the most. I have them in a ported box but its too small (air Space) for my subs. I think 3+ cuft box is what im aimin for (SQ). And also whats the advantage of haven a big mouth port then a slim one.