embarrasing question :/ port displacement??????

[rickymac21 10+ year member]

i have built many boxes .. most of them pretty loud... but i havent ever been told or actually learned a formula to calculate port displacement... re's website has a box designer that calculates the displacement for you so i dont usually have too... but say i need 200 sq inch of port tuned to 35 hertz... how would i calculate it?

basically the box is going to be a rectangle. real simple. 35" wide 15" tall and ???deep... no longer than 56" deep. needs to have 12.5 cubes net... someone want to help me out with this??

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[marcotheclepto 10+ year member]

winisd?

 

[JordyO 10+ year member]

i have built many boxes .. most of them pretty loud... but i havent ever been told or actually learned a formula to calculate port displacement... re's website has a box designer that calculates the displacement for you so i dont usually have too... but say i need 200 sq inch of port tuned to 35 hertz... how would i calculate it?
basically the box is going to be a rectangle. real simple. 35" wide 15" tall and ???deep... no longer than 56" deep. needs to have 12.5 cubes net... someone want to help me out with this??

It's a very complicated formula..... just use port calculators.

It's not embarassing... that's how everyone does it //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[S.B.C. 10+ year member]

ygpm

 

[rickymac21 10+ year member]

dont want to download anything to my computer.. its slow enough as it is... there isnt any formula?? i mean theres one to figure out the inner cubic ft of a box.....

 

[jdawg 5,000+ posts]

round or square?

 

[marcotheclepto 10+ year member]

im working it out atm... somoeone pmed you maybe they have the answer

 

[rickymac21 10+ year member]

pm replied... thanks.... and its square. ^^^^ slot port..

 

[jdawg 5,000+ posts]

width time height gives you area

 

[S.B.C. 10+ year member]

Actually bro, getting ***** in jail is embarassing- Thats just a good ? //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[marcotheclepto 10+ year member]

52x15x35

port 8side x 13.5side x 9.4deep

 

[marcotheclepto 10+ year member]

someone double check my math...

 

[marcotheclepto 10+ year member]

actually nevermind need to redo didi 108 sq in of port thought you needed 100 //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[marcotheclepto 10+ year member]

with ~ 200 sq in or port tuned to 35 with your max demensions you end up with like 12.1 cuft..

 

[S.B.C. 10+ year member]

Yea, its about 192sq in of port