Help with tuning aero ports

[KillerKeller40]

so would I be better off adding a second port say two 4” x 10” ports. Also what calculator are you using so I can play with it? Also what is a deal for port area per cube ? 

[Mr DeeBeez]

Ultimate car audio app

I personally would go with a slot port if I were you. I typically have around 15 square inches of port per cube. My hdc4 15 box is around 17. 

[ckeeler11]

Info and calculator for port area on enclosures. Once you know how much port you need and how much room you have you can then download Torres box calculator and get to figure out what works.