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    4.0@33 box plan

    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.







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    Re: 4.0@33 box plan

    what are you max diamentions?




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    Re: 4.0@33 box plan

    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.




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    Re: 4.0@33 box plan

    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




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    Re: 4.0@33 box plan

    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.




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    Re: 4.0@33 box plan

    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.




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    Re: 4.0@33 box plan

    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




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    Re: 4.0@33 box plan

    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.



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    Re: 4.0@33 box plan

    Quote Originally Posted by rpfuror View Post
    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/...&Vas=&Fs=&CE=0




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    Re: 4.0@33 box plan

    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




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    Re: 4.0@33 box plan

    Thanks guys. Appreciated. I'll get some pics of it when it's done.




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    Re: 4.0@33 box plan

    Quote Originally Posted by rpfuror View Post
    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.




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    Re: 4.0@33 box plan

    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




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    Re: 4.0@33 box plan

    Quote Originally Posted by rpfuror View Post
    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.




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