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TacoSauce
12-14-2006, 09:52 AM
I always relied on this site to get my box plans, but now the ones I need are all taking down or something =(.

Does anybody have a good box plan for a 4.0@33 for two 12" subs?? Or knows where to direct me to find one? Thanks.

rpfuror
12-14-2006, 09:54 AM
what are you max diamentions?

TacoSauce
12-14-2006, 10:02 AM
I got a little over 39 inches for the width. It can't be too tall either cuz I have a spare tire up top kinda hanging over the box.

rpfuror
12-14-2006, 10:22 AM
still need one other number to size.

one would be

Width= 39.00
Height= 14.00
Depth= 19.50

another would be

Width= 39.00
Height= 20.00
Depth= 16.25

depending on available height
;)

TacoSauce
12-14-2006, 10:27 AM
Width= 39.00
Height= 14.00
Depth= 19.50

I'm pretty sure that would work. I'm gonna go get exact measurements around lunch time, i'm at work right now. But i'm pretty positive that those dimensions would work fine.

TacoSauce
12-14-2006, 12:22 PM
I have a good 42 inches on width, depth is about 23-24 inches, and my current box height is 14 and it could handle 1 or 2 more inches.

So.. my max dimensions are:
Width- 42 inches
Depth- 23-24 inches
Height- 15-16 inches

The subs are RE SX subs, just incase you needed to know that.

rpfuror
12-14-2006, 01:10 PM
Here you go, this assuems a driver displamnet around .5 cu/total
If you want detailed plan let me know:

Desired Net Volume: 4 cu/ft
Desired Box Width: 40 inches
Desired BoxHeight: 15 inches
Desired Tuning Freq: 33 Hz
SQ Vent Width: 3.5 inches
Wood Thickness: 0.75 inches

Output:
Width= 40.00 inches
Height= 15.00 inches
Depth= 18.75 inches
Port Length= 20.31 inches
Driver Volume= 4.51 cu/ft
Port Area= 47.25 sq/in

Box Cutts: X Y #
Top / Bottom 40.00 18.75 2
Back 40.00 13.50 1
Face 35.75 13.50 1
P side 18.00 13.50 1
O side 17.25 13.50 1
Port1 13.75 13.50 1
Port2 ~2.50 13.50 1

Duke
12-14-2006, 01:17 PM
I'd say around .35 total driver displacement. The 06XXX is quite a bit bigger, and one of them displaces .24.


Umm, I was thinking you had SEs, but still might be about right.

xluben
12-14-2006, 01:43 PM
Here you go, this assuems a driver displamnet around .5 cu/total
If you want detailed plan let me know:

Desired Net Volume: 4 cu/ft
Desired Box Width: 40 inches
Desired BoxHeight: 15 inches
Desired Tuning Freq: 33 Hz
SQ Vent Width: 3.5 inches
Wood Thickness: 0.75 inches


i'd shoot for more port area, since he's got plenty of space to work with.

something like this should be plenty:

http://www.subwoofertools.com/forum/ported-box.asp?Ew=40&Eh=15&Dia=6&Xmax=23&Vd=.12&NumW=2&Vb=4&Fb=33&Qts=&Vas=&Fs=&CE=0

rpfuror
12-14-2006, 04:04 PM
that would work, those plans are pretty close too. the program I made pays more attention to internal volume . The site seems to round and make assumptions on size, but 9 times out of 10 it works out;)

TacoSauce
12-14-2006, 04:37 PM
Thanks guys. Appreciated. I'll get some pics of it when it's done.

xluben
12-14-2006, 07:27 PM
that would work, those plans are pretty close too. the program I made pays more attention to internal volume . The site seems to round and make assumptions on size, but 9 times out of 10 it works out;)

well, it only makes you cut pieces to within 1/4"

but i am positive that it is NEVER of by enough to sound audibly different.

rpfuror
12-14-2006, 08:52 PM
completely agreed, like I said 9 time out of 10 it works. Sometimes it does screwy stuff with the sizes cutts, thats why I built a program for myself;)

xluben
12-14-2006, 09:12 PM
completely agreed, like I said 9 time out of 10 it works. Sometimes it does screwy stuff with the sizes cutts, thats why I built a program for myself;)

yeah, if it's a straight port w/no bend, it sometimes will change the box dimensions to achieve the correct volume/tuning/and get the port width that it thinks you need.

also it really likes to make labyrinth ports.

mind hooking me up with the program you wrote?

i've set up some decent excel worksheets, but far from universal.

i'll send you a PM w/my e-mail.