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View Full Version : An average 8" subwoofer box



BrownVanMan
05-07-2012, 02:03 AM
so heres my issue. max outer dimentions are 9 inches wide and 26 inches deep.

currently i have the hight at 9" as well this gives me about .73 cubes before displacement.

as of now its ported with a 2" flared port about 11 inches long. it has a really steep roll off after about 35Hz and for some reason give the sub very little dampening above 50hz.

so what im wondering is is if i were to make another box would going with a slot port help, i can also make the last 10 inches of the box high by about 4 inches to help increace box volume to allow for more port area. Plus i can always invert the sub (kinda want to anyway) so theres even a tiny bit more air space.


menards local has a 4x8 sheet of birch hard wood on sale for 24.99 so i feel like i NEED to take advantage of this deal.


thanks!!!!!

Phoenix Risen
05-07-2012, 02:04 AM
what sub is if for?

BrownVanMan
05-07-2012, 02:16 AM
a sundown E8 for now maybe a SA-8V1 as they are getting really cheap with the recent releace of the v2


thats why i said an average 8 box because im sure ill be swapping and trying different subs here and there

BrownVanMan
05-08-2012, 06:34 PM
so 12 to 15 SQ inches of port would be a port 1.25 inch wide and 12 inches tall tuned to 35hz (kinda high) would mean the length needs to be about 44 inches long according to the caluclator here

Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators (http://www.the12volt.com/caraudio/boxcalcs.asp)

just having a hard time fathoming why the need for such a length

ace_800
05-08-2012, 06:43 PM
I was told 1.25" wide port was too small, needs to be at least 1.5, 2" is perfered. Per Jacob.

Buck
05-08-2012, 06:45 PM
The ports are generally stupid long.

BrownVanMan
05-08-2012, 07:05 PM
so they are wrong i was gonna go 1.5 wide and a length of 22

BrownVanMan
05-12-2012, 12:39 PM
I was told 1.25" wide port was too small, needs to be at least 1.5, 2" is perfered. Per Jacob.

so if the port were 2" what would be an acceptable length?

ace_800
05-12-2012, 02:53 PM
I think 3" would be better, that's what I'm at.