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Reload Thread: Yet Another Box Building Thread

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    Yet Another Box Building Thread

    I'm trying to figure this out on my own..forgive me for my misunderstandings.

    Respectively, these are my dimensions I've come up with..they are loose, I am just trying to match my Qts accurately.

    H=14
    W=16
    D2=4
    D1=10

    This is a wedge shaped-sealedbox. D2 obviously being the top depth dimension.

    These measurements yield 0.58 cu ft .. which I know is a tad large, but I am compensating for some bracing. Probably going to rip the 3/4 MDF down to 1/2"(as I have a lot of stock to waste) and brace all the seams.


    Sub Specifications:

    Fs: 25 Hz Magnet weight: 150 oz. SPL: 86 dB 1W/1m Vas: 3.00 cu. ft. Qms: 3.12 Qes: 0.58 Qts: 0.49 Xmax: 14.3 mm Dimensions: Overall diameter: 12-3/8", Cutout diameter: 11-1/8", Depth: 5-3/8"

    Link:

    Dayton Audio RSS315HF-4 12" Reference HF Subwoofer 4 Ohm High Fidelity Reference Series 295-464


    Thanks in Advanced for anyone taking the time to assist me.







  2. #2
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    Re: Yet Another Box Building Thread

    wut??



    1999 Tahoe
    2 sa12s
    4th order
    145.18 @33z... with less than 500 watts!

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    Re: Yet Another Box Building Thread

    Quote Originally Posted by RangerDanger View Post
    wut??
    Lol..maybe I didn't reveal my question well enough:

    Is this size proper?




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    Re: Yet Another Box Building Thread

    Shameless bump




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    Re: Yet Another Box Building Thread

    lol 150 views and nothing?

    Can someone at least tell me I'm on the right path?

    Thanks




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    Re: Yet Another Box Building Thread

    What you have is a trapezoid to figure volume for a trapezoid:
    First convert all your values to feet by dividing by 12.

    volume = L * (b1 + (b2 - b1) * h1 / h + b1) * h1 / 2
    In your case here are the values converted:
    L= 16 = 1.334
    h=14 = 1.167
    h1=7 = .583
    b1=4 =.333
    b2=10 = .833

    Google "calculate volume of a trapezoid" enter the values and you get:

    .36 cu ft.

    Your Vas: 3.00 cu. ft.
    This is the size you want your box volume to be
    Vas = Volume Air Space

    at either .36 or .58 cu. ft. it is to small

    I found this site very helpful:
    www.bcae1.com/spboxnew2.htm

    Your dimensions need to be more like
    H = 18"
    L = 24"
    D1 = 8"
    D2 = 16"

    Were talking a 12" sub here not a 6-1/2" woofer
    which is the original dimensions you give for.
    Last edited by RealAlan; 05-08-2012 at 04:11 PM.




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