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View Full Version : Getting rid of Port Noise



Slaymon
08-02-2003, 01:59 AM
Well I'm tryin to figure out how to get rid of port noise. I have a small enclosure. About 2.21 after displacement. Port noise is audible when subs hit higher notes. Is there a way to make port noise less audible? There are two ports that are 3x2 1/4x18. I believe its tuned to around 32 hz. Would makin bigger ports reduce the noise or going with small ports reduce it?

MXJMR
08-02-2003, 02:43 PM
Sand the back edges of the port. When the edges are rough it creates port turbelance so you should just try to sound it and round the edges a lil.

ShaunMac
08-02-2003, 02:55 PM
Go with larger ports to get rid of port noise.

LuNaTiC
08-02-2003, 08:40 PM
but if you make them bigger itll tune it differently, if it matters.

MikeofTulsa
08-02-2003, 08:48 PM
well if u go larger...u change the length to compensate....

Primetime
08-02-2003, 09:12 PM
Ohh so Size DOES matter...

Slaymon
08-07-2003, 02:16 PM
Recalculated everything. My box is tuned to around 35hz. The ports are about 17 inches long. If I tuned it to around 25 hz(I'd have to had about another 8 inches of port length) would that help rid of port noise. I'd also have to wind it around the outside of the box. When I finish it would end up looking like to U's(the ports) inside the box. Just kinda want to get rid of this as some of its pretty annoying.

I wish my brother knew how to add and figure the right lengths, so I woudn't have to deal with this.

MikeofTulsa
08-07-2003, 02:23 PM
nope....like i said...jus make the diameter larger....adjust the length to compensate

jbl_marshall21
08-07-2003, 06:43 PM
yea bigger diameter will get rid of port noise. but since u have a bigger diameter that means higher tuning so to get ur tuning back down u need to have a longer port. so u probaly need like some 4 inch ports that r like 10 inches or something.