Ok, im no newb to car audio just ported box's, i've made plenty of boxes for my personal use or for friends and i only make sealed encolsures.. i one day will learn how to calculate it and but i need this done asap. my box is ten cubic feet and i want to have a port on each side of the box. was size of pipe do i use and how long should it be. lemme know what you think will be best oh! wait, how many hz should i tune my box too? pce out