what's port tuning?

[LOW ET]

what does port tuning mean? i just got done building the 12w7 ported enclosure that jl recommends and it says recommended port tuning: 32hz.

[Random1010]

it means that what the box is tuned to..

[dumpin907]

i thought JL says 35 hz for the w7?

[dumpin907]

Tune to:
(Hz) 36.7

actually it says ^^^^

[LOW ET]

in the owners manual it says 32hz, http://mobile.jlaudio.com/pdfs/557.pdf. on this page it says 36.7hz, http://mobile.jlaudio.com/products_subs_enclusure.php?series_id=9

[dumpin907]

down by enclousure recommendations it says 30 hz....

[LOW ET]

down by enclousure recommendations it says 30 hz....

you're looking at the 13w7

[dumpin907]

you're looking at the 13w7


oh my bad...you have pics of your box?

im probably makin mine today for my w7 12

[LOW ET]

oh my bad...you have pics of your box?

im probably makin mine today for my w7 12

not yet. i wanted to carpet it before i take pictures. all the glue is drying right now.

[dumpin907]

right on, how much mdf? like half a sheet? i have like half a sheet left over from my last box build that i hope will work

[LOW ET]

i used two 4'X2'X.750" and two 4'X2'X.500" sheets to make the box. i had left over wood after all the cutting was done. i glued the two .500" sheets together to make the 1.000" front baffle. everything worked out great. hell, i even routered the begining edge of the port inside the box to get that nice rounded edge. i also used t-nuts for mounting the sub so there will be no stripped out screw holes.

[dumpin907]

i used two 4'X2'X.750" and two 4'X2'X.500" sheets to make the box. i had left over wood after all the cutting was done. i glued the two .500" sheets together to make the 1.000" front baffle. everything worked out great. hell, i even routered the begining edge of the port inside the box to get that nice rounded edge. i also used t-nuts for mounting the sub so there will be no stripped out screw holes.

word. did you do the cuts yourself?

[LOW ET]

yes, on a radial arm saw.

[dumpin907]

nice. what did you tune yours to?

[LOW ET]

nice. what did you tune yours to?

now did you read the title of this thread?

i have no clue. i built the box to jl specs and it is what it is. now i started this thread to find out what port tuning is. since i built the box the way they wanted i assume it's tuned to 32hz.

[dumpin907]

yeah then yours is 32hz if you made the cuts correctly. your box should allow you to hit the lows.

[LOW ET]

yeah then yours is 32hz if you made the cuts correctly. your box should allow you to hit the lows.

haha, what do you mean if? my cuts/measurements are dead on! it turned out better than expected.

[dumpin907]

well congrats then. that should be a really effecient box. you will slam the lows and still hit the mids and highs. i wanna see pics though!

[LOW ET]

i'll get them up once the carpet comes. it may be for sale to go with the 12w7's i have for sale, or maybe i'll have to install it in my car. here's a link to my stuff: http://www.caraudio.com/forum/showthread.php?t=263105

i also made some mounting rings for 12w7 fiberglass enclosures.

[dumpin907]

i'll get them up once the carpet comes. it may be for sale to go with the 12w7's i have for sale, or maybe i'll have to install it in my car. here's a link to my stuff: http://www.caraudio.com/forum/showthread.php?t=263105

i also made some mounting rings for 12w7 fiberglass enclosures.

yeah thats where i saw your stuff and PM'd you. unfortunatly right now i have too many subs and need to sell some before i want to buy more stuff you know. i have a w7 12 on the way though.

[LOW ET]

here's the rings

http://i233.photobucket.com/albums/ee302/msv4777/IMG_0551.jpg
http://i233.photobucket.com/albums/ee302/msv4777/IMG_0552.jpg

1" thick with step to staple the grill cloth on and build up the fiberglass.

[dumpin907]

lookin nice man

[LOW ET]

here's the jl spec ported box

http://i233.photobucket.com/albums/ee302/msv4777/IMG_0560.jpg
http://i233.photobucket.com/albums/ee302/msv4777/IMG_0563.jpg
http://i233.photobucket.com/albums/ee302/msv4777/IMG_0561.jpg
http://i233.photobucket.com/albums/ee302/msv4777/IMG_0564.jpg