how do you determine port width?

[canadiankush 10+ year member]

ive researching and cant find anything on it.

Click to read more...

 

[brandinooooo 10+ year member]

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side to side?

 

[Kangaroux 5,000+ posts]

The award for the most useless thread of the year goes to...

 

[Wattser93 10+ year member]

ive researching and cant find anything on it.

It's the width of the port. FYI.

But port width isn't the only thing, a port has a height, width, and a length, there's more to a port than just width.

 

[Dirtrider4eva 10+ year member]

hmm...

for a square or round port..

use the equation

LV = (2.35625x10^4 x (diameter of vent)^2 x (number of ports) divided by (box voulme) x (frequecy)^2) - (diameter of vent) x (k)

k = free end

for one end use .732

for two use .614

or.... for slot port

(box volume) x (desired cubic " per foot (12-16")) / heigth

that will give you an approximate if the length is 16" long and you want 40hz

 

[canadiankush 10+ year member]

what i meen is should i make the port 2" wide or 5" wide.... i know how to find length

do you guys not get what im saying?

EDIT: its a slot port.

my box is 21"W 19"H 23"D. im looking to tune it to 32hz for a BA G2 15

 

[subzero 5,000+ posts]

Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators

RE AUDIO - Box Calculator

 

[canadiankush 10+ year member]

Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators
RE AUDIO - Box Calculator

ok... theres still no port WIDTH just length. and im already using the first site.

 

[brooklynjoy2008 10+ year member]

Go to bcae1.com and use th calc there

 

[subzero 5,000+ posts]

are you reading them right? both site ask for the width.

 

[canadiankush 10+ year member]

does it not matter if i have 1.5" port width or 5" port width as long as the port length is right? all it says is to add the port width, so do i choose a random width?

 

[CHEMMINS 10+ year member]

Whats the height of the port?

 

[canadiankush 10+ year member]

Whats the height of the port?

17.5"

 

[CHEMMINS 10+ year member]

You have a slot port that is 17.5" high. So I am guessing this is a vertical port. I would not go smaller than a 2.5" wide port. No bigger than 3". Calculate depth after.

 

[canadiankush 10+ year member]

You have a slot port that is 17.5" high. So I am guessing this is a vertical port. I would not go smaller than a 2.5" wide port. No bigger than 3". Calculate depth after.

Thank you! 2.5 is what i had planned to use.