View Full Version : Box For My Dd's

11-30-2008, 12:59 PM
Hey... im new here.. im looking for somone that is great with designing boxes. i have 4 12" dd 2500's... i want to go for maximum spl but still sound good on music. i would say somewhere around 40 hertz tunning.... i have a lot of space to work with so it can be a pretty big box... if you can help just let me know...

11-30-2008, 01:02 PM
14-16 square inches of port per cubic foot of box volume and make the port about 16" long. TUnes pretty close to 40 HZ. I would do 8-9 cubes for 4 12"s.

11-30-2008, 01:47 PM
yea.. i actually have them in a box exactly like that... only problem is it isnt much louder than 144 db's....the guy i bought them from had them in a wall and hit 153 db... i have read many places people hitting higher numbers, like the 50's... someone had 2 of them in a 7 cubic ft box with 140 sq inch of port tuned to 45 hertz... hit 149 db... if i put them in a big box ( roughly 3-3.5 cu ft per sub) and have lots of port area tuned high would i be able to get those loud numbers.??

11-30-2008, 02:54 PM
go 9 cubes with 180in.^2 and give them a little more then rated power.

11-30-2008, 03:31 PM
alright... so what kind of box should i build givin what you just said??? a wall, subs up port back, subs and port back?..... like i said, i have lots of room, i just want whatever will be loudest..

12-01-2008, 12:27 PM
with 4 12s a 150 shouldnt be too hard. What are you using for power?

12-01-2008, 01:44 PM
i have 1 red top optima... 0 gauge power, i also upgraded the stock wiring under the hood( big 3)... im running the all off of one Autotek mean machine 4000..... wired to 2 ohms...

12-01-2008, 02:14 PM
How close are you to Dayton?...I would gladly give you a hand :)

12-01-2008, 06:43 PM
well not that far.. i live in about 30 minutes north of there. close to urbana,, and piqua.. in between the 2...... im not looking to buy designs though... or have someone build it for me.. im actually pretty good at building.. and somewhat at designing, i just want to know what people think i should do with cubic feet and tunning... thanks though,