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    DBfan187's Avatar
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    Re: Designing a ported box with George








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    Re: Designing a ported box with George

    like it was said before, the formula isn't going to get your dimensions with the snap of a finger, you have to know how to use it.

    I'll have to figure it out because i'll be building a ported box in the neer future, and i've never tried it before.




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    Re: Designing a ported box with George

    finally got my box all calulated thanks alot george, by the way how can I find the total square area of my box, so I can go buy the wood tomm sq ft.



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    Re: Designing a ported box with George

    Quote Originally Posted by George
    Step 10: Now we need to find out how deep we need to make the box in order for the sub to get its 4 cubes. well i know what your thinking...
    "we used 12 inches for internal depth earlier in the example, how can it change now?" well like i said, displacement always stays the same so we just chose a number inorder to find the displacement, now we need to figure out how deep we need to make it to actaully fit within the 4 cubic foot reccomeneded volume.

    so to do this we need to do the gross volume (step 9)*1728/(HxW).
    example: 4.9*1728/(10x20) and we get 42.336. so the internal depth would be 42 inches for a box that is 10 inches high and 20 inches wide, in order for it to be 4.9 cubes total(gross volume).
    When you say 10 inches high and 20 inches wide, are these the internal or external dimensions of the box?

    I have been following this tutorial well, I am just confused on this one spot



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