View Full Version : ~*the Rebuild*~
07-26-2006, 03:11 PM
okay so here it is. this is what i have to work with, im not changing a thing.
WIDTH- 38 3/4"
this is the state of the box, sanded, wood filler is in.
id like ONE port, tuned to 36hz. it can be however wide...pref 3+"
07-26-2006, 03:19 PM
im figuring 4.205 ft. for internal volume without the port. i want to fix this, ship out this box if Army-Killa still wants it, or else ill use it. now for port length.
07-26-2006, 03:30 PM
am i making a slot port??? or have i been making them?? that run along the wall??
07-26-2006, 03:31 PM
port 12X4"------17.4" long gets me 35hz????
07-26-2006, 03:33 PM
12x4-------14.75" long gets me 37hz...is this correct? and where do i measure the port length. down the middle? inside the wall. or around the outside of the port wall?
07-26-2006, 03:34 PM
12x4------16.02" long gets me 36hz. which one???
07-26-2006, 04:30 PM
ok so i punched some numbers...i really could use another opinion, sorry for bothering everyone.....
4.202-.444=3.75^3 ft....that its about 1.8^3 ft per sub. not with driver displacement yet.....
07-27-2006, 12:59 AM
bump hah...lets help this dude get it perfect the second time around:)
07-27-2006, 01:03 AM
it is perfect :)
refer to other thread for pics.
07-27-2006, 01:05 AM
yeah, you need to use net volume when calculating the tuning, so it's kind of a back and forth until you figure out what you want.
i don't think you can do better than 2.9 cu ft @ 36Hz with a 4"x 12" port.
here ya go:
EDIT: nevermind, i thought you were re-doing the other box too.
how long did you end up making the port?
(make sure you measure like this: port info (http://mobile.jlaudio.com/support_pages.php?page_id=165) )
or, to not confuse you, how long is the second part of the port wall (after the bend) ?
sorry i wasn't around this afternoon to help with the calculations, i was still at work :(
can't wait to hear your new and improved box (and mine!).
07-27-2006, 01:13 AM
it is right around 24" long. thats what i was told to do.
07-27-2006, 01:29 AM
ahh i guess i missed something haha. well done
07-27-2006, 01:34 AM
just a couple things...drama. work. drama.