Tuning 120^2 of port to 38 hz?

[bunkerking09 10+ year member]

How long does the port need to be??

box is 10 cubes AFTER sub displacement, so maybe like 9.5 net after port and bracing??

Click to read more...

 

[skmfkr 5,000+ posts]

depends on the net volume

 

[bunkerking09 10+ year member]

depends on the net volume

eh sry

i'll edit the first post

common sense > me

 

[skmfkr 5,000+ posts]

well i use this calc

http://www.carstereo.com/help/Articles.cfm?id=31

if it is 9.5cubes and 120 square inches of port it says 8.53 inches long

 

[bunkerking09 10+ year member]

first i said height 20, length 6...it said 11.53 long...

than i entered height 6, length 20...it said 4.53...

maybe i'm retarded?

 

[skmfkr 5,000+ posts]

you enter height and width and it tells you the legnth...

 

[skmfkr 5,000+ posts]

same here thats weird

 

[bunkerking09 10+ year member]

how did you get 8.53??

 

[skmfkr 5,000+ posts]

10x12. **** seems this calc is pretty whack

 

[bunkerking09 10+ year member]

maybe you shouldn't use it //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

lol

 

[skmfkr 5,000+ posts]

lol im thinking the samething

 

[bunkerking09 10+ year member]

anyone have another website?

i tried the same thing on another website and got the same results...

maybe its right??

 

[bunkerking09 10+ year member]

but 4.53 seems like a really short port...

 

[Korn4Life 5,000+ posts]

re audio calculator is ok

 

[bunkerking09 10+ year member]

this isn't an "L" port. its in the center of the box