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    skylineTT's Avatar
    skylineTT is offline bass=sekz



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    critique my box numbers

    alright this is for a 15" sub.. 3Kw RMS where the back seat used to be in a coupe. this is also using the RE calculator

    width-40
    height-18
    depth-16
    wood thickness-0.75
    square port height-16.5
    square port width-3
    square port length (1)-12.25
    square port length (2)-10
    total port length-27
    square port diameter-7.938851142
    square port area-49.5
    square port volume internal-1361.25
    square port volume displaced-1377.375
    box volume-4.533
    tuned frequency-29.714252392092

    im trying to go for 4 cubes at 30hz and i figure this monster of a sub takes about .5 cubes and would raise the tuning a tiny bit after sub displacement. are these good specs? thanks



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    RAM_Designs's Avatar
    RAM_Designs is offline SketchUp Master



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    Re: critique my box numbers

    The sub won't take up .5ft^3, more like .2-.25ft^3 at the most for a single 15. But everything else looks close enough.

    What sub?



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  3. #3
    skylineTT's Avatar
    skylineTT is offline bass=sekz

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    Re: critique my box numbers

    its a sub ssackett made for me.. madmax 4" coil motor with his softparts and 15" basket.



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    skylineTT's Avatar
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    Re: critique my box numbers

    well i drew the cuts on my MDF but it looks to be such a small box. i swear my 3 cube box for my L7 that i built with the old box calculator looked bigger. is the RE calculator accurate?



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    Andrew12's Avatar
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    Re: critique my box numbers

    Quote Originally Posted by skylineTT View Post
    well i drew the cuts on my MDF but it looks to be such a small box. i swear my 3 cube box for my L7 that i built with the old box calculator looked bigger. is the RE calculator accurate?
    Not at all bro



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    Re: critique my box numbers

    frick, what do i do?



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    Re: critique my box numbers

    ehh whatever i calculated volumes and at least its a true 4+ cubes without sub and port displacement. ill just do the dang thing and make my cuts and stuff today after i sleep.



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    Re: critique my box numbers

    my eclipse 18" 4hp titanium pro is only .255

    Your 15" subs must have a magnet the size of my rims to yield .5 cubes of disp.



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    Re: critique my box numbers

    Quote Originally Posted by Andrew12 View Post
    Not at all bro
    Re calculator isn't that far off. Subract sub displacement by taking an inch or 2 off the box width and it should put you close to where you want to be.



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  10. #10
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    Re: critique my box numbers

    cool. i made my cuts and i guess will finish today (thursday).. i still have a mess of wiring to do as well before this hoe is slammin.



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