how do you figure up the port area

[king ranch 5,000+ posts]

anyone kno the formula for that

the port area and the cu space it takes up

thanks

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[ultimate157 5,000+ posts]

square port: length x width

round port: Pi * r^2

Multiply either by the length (make sure to account for wood thickness) to get volume displaced.

 

[tommyk90 5,000+ posts]

square port: length x width
round port: Pi * r^2

Multiply either by the length (make sure to account for wood thickness) to get volume displaced.

And if he's calculating his box size in cubic feet, take those numbers and divide them by 1728. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[king ranch 5,000+ posts]

no i already have the box voulme i am wondering how to determine how much area and cu ft of space the port will take up its a slot port

its 4inches high 24.5long and 15.5wide

what would be the area for that and the cu ft it takes up

 

[ultimate157 5,000+ posts]

Edit: Which measurement is to the inner port wall? Will make a difference in volume.

 

[king ranch 5,000+ posts]

15.5 wide 24.5long with the 2inch lip that sticks up and the port is 4inches high

 

[king ranch 5,000+ posts]

those are inner measurements

 

[ultimate157 5,000+ posts]

Including the wood thickness, the port displaces 1.04 cubes. (Assuming 0.75" MDF)

Has a port area of 62 in^2.

 

[king ranch 5,000+ posts]

ok if you could work out the math for me or jut give me the formulas so i kno for in the future

by the way thats a 33hz tune and will taht work for 2 12's l7's

the entire box internal is 24.5 deep 29.5 tall and 15.5 wide

so each sub should have right at 2.6 net

 

[king ranch 5,000+ posts]

bump

 

[king ranch 5,000+ posts]

formula for figurging out area for port plzzzzz

thanks

 

[tommyk90 5,000+ posts]

formula for figurging out area for port plzzzzzthanks

It was already given to you.

Length x height=port area.

 

[king ranch 5,000+ posts]

sorry so is 62 enough for the 2 12's l7's with a new of 5.2 after displacment for everything

i heard 80-87 is proper area for port is that true

 

[tommyk90 5,000+ posts]

sorry so is 62 enough for the 2 12's l7's with a new of 5.2 after displacment for everything
i heard 80-87 is proper area for port is that true

62 square inches is plenty.

 

[king ranch 5,000+ posts]

ok thanks and also would that be louder or would 3 4inch aeros at 16.02inches be louder both same tunning subs and power and same net for subs