Ok guys heres the situation. I ordered a BL 15 with cooling and flat wind dual 2 ohm. I'm building a box myself and having trouble on what to do with the port. The box is planned at 3.76 ft^3 with the woofer displacement added in. Its recommended to have 12-16 sq in of port per cube so i need anywhere from 45-60 sq in of port. I want to just maybe slap a 3x6 aero port or maybe a 4x6 aero port. The 3x6 is 42 sq in and the 4x6 is 75. Both not in the range i need. Also looked on amazon and found precision ports 3 in and a 4 in round. Doesn't say the length on them tho . Reviews say there adjustable somehow. Help would be appreciated. Also wanted some recommendations on amplifiers. Was looking into maybe a rockford T1000 or a T1500 can get either for around $400. Let me know what you think guys. Thanks.

Should be able to find out which products you want from their site. They're adjustable because you can add a length of tube to a kit or whatnot, or cut a tube to get your desired length.

http://www.psp-inc.com/products_menu.html

I would use the option with more port area, but if you can't afford it, then it's a sacrifice you will have to make.

Either of those amps will be fine, but i prefer some headroom so i would go for the 1500, especially if they're the same price.

Any reason why you have 2 exact same threads?

Should be able to find out which products you want from their site. They're adjustable because you can add a length of tube to a kit or whatnot, or cut a tube to get your desired length.

http://www.psp-inc.com/products_menu.html

I would use the option with more port area, but if you can't afford it, then it's a sacrifice you will have to make.

Either of those amps will be fine, but i prefer some headroom so i would go for the 1500, especially if they're the same price.

Any reason why you have 2 exact same threads?

NOOB! lol

I would go with 2 6" aero ports, that would still be on the small side though, about 56.5 in^2 of port when the calculator i used recommends at least 62

get the t1500, just set the gains correctly

I would go with 2 6" aero ports, that would still be on the small side though, about 56.5 in^2 of port when the calculator i used recommends at least 62

get the t1500, just set the gains correctly

What diameter?

Should be able to find out which products you want from their site. They're adjustable because you can add a length of tube to a kit or whatnot, or cut a tube to get your desired length.

http://www.psp-inc.com/products_menu.html

I would use the option with more port area, but if you can't afford it, then it's a sacrifice you will have to make.

Either of those amps will be fine, but i prefer some headroom so i would go for the 1500, especially if they're the same price.

Any reason why you have 2 exact same threads?

I have no clue haha. Can i delete the other? dont know why it is posted twice like that

I already got rid of your duplicate thread.

I would go with 2 6" aero ports, that would still be on the small side though, about 56.5 in^2 of port when the calculator i used recommends at least 62

get the t1500, just set the gains correctly

What diameter?

2 6" diameter aeroports, i didnt calculate the length needed but there are calculators for that, stefanhinote just made one on here for multiple aero ports