Hi guys, I'm new here looking for a little help. I have an eclipse 88150DVC aluminum sub(15 inch) and have started building a sealed box but would like to port it, if possible. I've tried the apps available but getting different outcomes cause I'm just not good at them. The box I have has a total of 3.75 CuFt with wood & sub displacements already calculated in. According to eclipse, my box is too big for sealed but have always had better luck with bigger boxes. I'd like to know if some one could calculate port or vent for me OR if I should even port it. I'll be pushing it with a Alpine MRP-M850 amp. Any help is highly appreciated.