I working on finishing up a subwoofer box for my VW. I'm keeping my spare tire under the box so I'm getting a little creative with the design. I'm have the subwoofer depth figured out ( 6.75" ) the total cubic feet figured out ( 2.06 cubic feet ) I'm posting some picture of the build so far, I'm adding 1.5" to the top sides to give me the subwoofer clearance I need and the airspace I'm looking for. That all said I've tired to figure out the correct port width, length, or size and I just come up short. Any help? Looking to get to 33hz with a 12" sub. I know it says W6 but that way me just trying to get some help from the JL support guys 
but no luck
but no luck
