surface area of port for 15"XXX

[bobo244]

I got 5.3 cubes of internal volume before speaker and port displacements.

I wanna tune it low, between 28-30 hz. It is going to be a slot port and I was wondering how many in^2 of surface area i would need for the port?

[Moe Lester]

I would give it 75 :)

[DBfan187]

use the equation in my sig for min. port area.