Too Much Port

[aznboi3644]

I would say that is not enough port area.

I used to run a single 15 with 800 watts in 4.3 cubes with 112.5 sq inches of port area.

[Ray]

5x40 is= 200 it less not more

I can add.

I was refering the the shape of a vent 5x40

[Noobtastic14]

something to consider with ports and efficiency is how much air is traveling along a wall or other surface.

5x40" port has a perimeter of 90" and an area of 200"

BUT- a port of say 15" by 13.5" is 202.5 square inches and only 57" of perimeter.

in port #2 more are is traveling in the port and less on the outer edge of the port = MOAR DBs

(which is why a round port is so efficient- least amount of wall to total port area)

-Drew

[mxman38]

im getting so many different answers here... uhh.

First off, i have never seen a wall with aero ports.. i have seen a couple set ups with square vents but i was told as long as im in the 9x1 ratio i would be fine.

also, i can see ray running 160 square inches in a 15 cube box if you are running a ton of power and hitting 157 or whatever at a higher frequency. The unfortunate part is that i already cut. But before i glue the baffle i COULD change it... but most ppl seem to think it is fine.