How should I decide port aera?

[FreekDesignz]

Very nice responds from everybody, yes i´ve tried the whole xmax formulas and let me tell you, i prefer going by trial and error, just get a big ass port and start shrinking it until you find the sweet spot, my DD 2512´s have a big xmax wich results on a big port?? well, that´s according to formulas, but in the real live i got something way different, of course, every system and car it´s different, but hey, i ended up with 16 SQ per cubic feet, while my 1510´s sounded better with 18 SQ per cubic feet and a smaller xmax haha, or better yet, when i tried a single 3518 (same xmax than the 2500 series) i ended up with 20 SQ per cubic feet ON AEROPORTS!!!

Anyways, that´s why we love car audio

Finally someone that made sence. But, where should I start? Start high and tune down or start low and tune up?

[fecupe2001]

Well, you don´t need to start anywhere hommie haha, you said biggest you can get it´s 14SQ per cubic feet on your desire tuning frequency, that should play VERY nice, i haven´t heard a single box and sub that suck ass with that amount of port area, now, going by aeroports or slot port depends on you my man, i love them both

[FreekDesignz]

Thanks. I start my box TONIGHT!!! 14 SQ it is