Hey guys, i have a 15" Punch hx2 and right now it is in a sealed box that is 2.5 cuft before i put the speaker in. I am wanting to build the best box for spl... and still maintain the sq. I was wondering what you guys think would be the best box to build. I have about a sheet and a half of mdf. I know the port should be 4"x8" so if i port it that way i would get a lightning audio aeroport. I was also wondering about slot vented boxes.