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DonH
11-10-2008, 02:18 PM
ok so im designing a box for my ranger and have completed the final design! i have a few questions since this will be my first box build! the box below has an internal volume of 3.8546 ft^3. Is that to large to be a sealed enclosure? the subs i have are cerwin-vega HED's. sealed they call for .9 cubic feet each !! they call for 1.1 cubic feet each ported to 33 hz. I want to go for ported due to an eventual upgrade.

If i wanted to port the enclosure to 33 hz how long of a port would i need? i know theres many sites out there that have calculators but dont trust em. N e ways i want the port to be 2.5 inches tall and 6 inches wide. any input will be greatly appreciated! thx guys! :D

below is the box design.

oh and the lip is due to my truck. the back seat area is really dumb!

http://img147.imageshack.us/img147/6149/boxnoportgg6.png (http://imageshack.us)
http://img147.imageshack.us/img147/boxnoportgg6.png/1/w640.png (http://g.imageshack.us/img147/boxnoportgg6.png/1/)

psych0ticnemes1
11-10-2008, 02:24 PM
According to the specs you provided, 4 cubes is too big for a sealed enclosure. That is twice the recommended size. Are you sure 1.1 cubes each ported is correct? Usually 4 cubes ported would be fine if your subs are 12"s.

DonH
11-10-2008, 02:31 PM
According to the specs you provided, 4 cubes is too big for a sealed enclosure. That is twice the recommended size. Are you sure 1.1 cubes each ported is correct? Usually 4 cubes ported would be fine if your subs are 12"s.

IM SHURE! i was thinking the same thing! the sheet that came with the woofers state 1.1 cubic feet. i guess they are recommended for sealed boxes but screw recommendations! How big of a port would i need? ie how long width and diameter

psych0ticnemes1
11-10-2008, 04:21 PM
That is something an enclosure designer, like myself, could figure out for you but I don't know off the top of my head.

DonH
11-10-2008, 05:00 PM
That is something an enclosure designer, like myself, could figure out for you but I don't know off the top of my head.

well then do u wana help me out? :D

DonH
11-10-2008, 05:43 PM
any help here would be nice! want to start on it tomorrow.

thx

schrummy
11-10-2008, 05:47 PM
specs of said subs??????

DonH
11-10-2008, 06:37 PM
specs of said subs??????


heres a pic may be small just click on it

***NOTE: I have the 12.4!!!***

http://img99.imageshack.us/img99/1971/1015fh0.jpg (http://imageshack.us)
http://img99.imageshack.us/img99/1015fh0.jpg/1/w640.png (http://g.imageshack.us/img99/1015fh0.jpg/1/)

James Bang
11-10-2008, 06:39 PM
http://img291.imageshack.us/img291/1697/gerberdevqh1.jpg

Vestax
11-10-2008, 06:51 PM
James, blue or black? I can't figure out what colored pen I should use to sign my tax papers?

James Bang
11-10-2008, 06:53 PM
Is Green allowed?

Green because it's supposed to symbolize horniness...

DonH
11-10-2008, 06:57 PM
James, blue or black? I can't figure out what colored pen I should use to sign my tax papers?


Is Green allowed?

Green because it's supposed to symbolize horniness...

WTF! how is this related?!?!

jeez its pretty hard 2 get a decent answer but thx to thoze who have posted sum thing relevant to this thread!

James Bang
11-10-2008, 07:02 PM
http://www.caraudio.com/forum/search.php

HOPE THAT HELPS

DonH
11-10-2008, 07:05 PM
http://www.caraudio.com/forum/search.php

HOPE THAT HELPS

well i tried that before my post :)

James Bang
11-10-2008, 07:08 PM
well i tried that before my post :)

it can be tried more than once. I don't think goob charges for that feature.

Vestax
11-10-2008, 07:11 PM
Dude seriously, if you don't know why you're porting, or even know how to port, don't port. Especially if you want to upgrade subs later. It'll be pointless.

DonH
11-10-2008, 08:33 PM
F uck it man going sealed! that box on the first page shall let all know how it goes!