Port Size & Port Noise... Where Does It stop

[InfiniteRuckus]

I was just curious what size ports are on the edge of too small (to the point where port noise is a serious factor) for both round & slot ports. i tried to search this topic but mainly came up with port tuning instead of port noise.

[treossi]

I was just curious what size ports are on the edge of too small (to the point where port noise is a serious factor) for both round & slot ports. i tried to search this topic but mainly came up with port tuning instead of port noise.

from like 13-20 inches per cube of port area was always pretty good to me.. i ran 30 inches of port per cube for a while.. just under those numbers causes some breathing problems

[InfiniteRuckus]

how wide was the port?

[bkolfo4]

The required port area will depend on the sub, the volume of air it can sweep (Vd), how much power you will use, and tuning frequency.

Using anything else to size the port is an estimate or guess. . .

You can use smaller ports if they are flared.

[AssKicker]

I do about 16 per cube, 1.5 cubes of space, works phenomenal so far. Gets loud and hammers the lows.

[loburbon]

dont forget also just because you have the right port area doesn't mean you wont have port noise. an example is a 10x10 port for 100sqin should have zero port noise. but if you make a long ass 50x2 slot port your gonna have a shit load of port noise.

[InfiniteRuckus]

see thats where i get confused @. currently i'm running a single 12 & a lot of the prefab boxes have a 1.75 inch diameter port & i'm looking to go for no port noise on a 12 box

Edited May 31, 2010 by InfiniteRuckus