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View Full Version : ??? port area

subzero
06-01-2009, 04:34 PM
So is more port area better? I keep comming up with 738... :eek:
2x13x24 = tuned to 26hz

93dakota
06-01-2009, 05:33 PM
lol.... that number is way off, I think you are getting port volume. Port area it the face of the port which is only two dimensions...so if your port is 2 inches by 13 inches at the opening then your port area is 26 squared inches which is about the size of an ok port for a 1.5 cubic foot box (net).

ThatChevyGuy
06-01-2009, 05:36 PM
reaudio.com / calc

mapolley07
06-01-2009, 05:47 PM
anyone mind posting the standard port area to box volume ration? I can't remember it, as in xx sq in. per cubic foot

7ender
06-01-2009, 05:51 PM
Should be 12-16" per cubic foot.

mapolley07
06-01-2009, 05:54 PM
Should be 12-16" per cubic foot.

thanks, its been almost a year since I've designed an enclosure and i forgot that

subzero
06-02-2009, 08:15 AM
lol.... that number is way off, I think you are getting port volume. Port area it the face of the port which is only two dimensions...so if your port is 2 inches by 13 inches at the opening then your port area is 26 squared inches which is about the size of an ok port for a 1.5 cubic foot box (net).

box is 3.75 cubes the port is 2wide x 13height x 24lenght

93dakota
06-02-2009, 10:02 AM
your port is way to small for that box And like i said the 24inch comes in to play in a port calc by it self while the other two dimensions are multiplied together to get your port area. Read this web site

http://mobile.jlaudio.com/support_pages.php?page_id=165

subzero
06-02-2009, 12:16 PM
your port is way to small for that box And like i said the 24inch comes in to play in a port calc by it self while the other two dimensions are multiplied together to get your port area. Read this web site

http://mobile.jlaudio.com/support_pages.php?page_id=165
ok well I cant figure out how to get this to fit in my trunk. The port would make this box huge. These dimensions are for a single sub. I am running two. Would anyone care to help design a box to fit in my cavalier? I would consider a sealed box but I want to wait till I have a better amp.

Ported Box T5-12
Min. Vented (ft.3) 2.00
Port (dia. x length) 4x10
Fb (Hz) 37.96
F3 (Hz) 31.76

Opt. Vented (ft.3) 2.50
Port (dia. x length) 4x8
Fb (Hz) 36.16
F3 (Hz) 30.11

Max. Vented (ft.3) 3.00
Port (dia. x length) (2)4x20
Fb (Hz) 34.09
F3 (Hz) 29.29 28.62 28.19

Supergumby5000
06-02-2009, 12:16 PM
reaudio.com / calc

is crap.

subzero
06-02-2009, 03:17 PM
http://img87.imageshack.us/img87/4507/5cubes34hz75sqinwh4.png

too big for trunk :crap:

DonH
06-02-2009, 03:20 PM
is crap.

correct!

also op port is to small

subzero
06-02-2009, 04:27 PM
correct!

also op port is to small

Yea, now accepting suggestions....