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Reload Thread: 27 hz slot box for 2 15 tempest just for fun plan

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    27 hz slot box for 2 15 tempest just for fun plan

    port area
    using 12 in^2/ ft^3 = 96in^2

    port height 24 inches x 4 inches = 96 in^2

    net vol 8 ft^3 , tuned to 27 hz

    Lv= 96in^2 * 1.84 x 10^8 / 8.00ft^3 *1728 (27/.159)^2 - (.823 * sqrt96)
    Lv=36.25in long

    port displacement

    4.75 x 35.5 x 24 = 2.34ft^3

    driver displacement = .353ft^3

    net vloume = 8.00 ft^3
    total displacement= 10.69 ft^3
    internal volume 24H x 37W x 21D
    38.5 W X 25.5 H X 21D external

    hows it look ? math ok will it work ?
    just did it for fun see what it would take

    mat
    Attached Thumbnails Attached Thumbnails 27 hz slot box for 2 15 tempest just for fun plan-tbox.gif  







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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    that would be SICK !.




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    you know it will fit in my dakota and i am getting two tempest ....




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    thats gonna be some nice BASS and SQ




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    whats wrong with it ? i keep getting the same numbers 36.248 length and 2.34 ft^3 ?

    entering my calc like this (ti83)

    Lv= (96*1.84x18^8)/ (8 * 1728 * ((27/.159)^2))= 44.3120 - (.823 * sqrt(96)) =
    36.2483511 up to 36.25




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    where is the 19.75 coming from ?

    i get 4.75 x 35.5 which is the lenth i get from the formula x 24 inch tall port height is there something i missing cuase i turned it ?




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    oh ok the math is right ? diagram is wrong




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    gotta do it the hard way.




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    si go dow to 4 inches off the back wall and turn left till i run out of port lenth right ?




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    i don't understand if i measure down th center of the port to 17 inches deep make the at 17 inchs which is 4 inchs off the back wall and the other port wall is inside the first it is still 4 inches off the back wall right ?

    i think i misunderstanding wjat you saying the way i understand it is that you start with 4ichs to keep the port area right it has to be 4 inches at the turn so that any where along that port the measurment is 4 inchs outside wall to port wall




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    are ya saying it only has to be 2 inches off the back wall ?




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    this just for fun thread is pretty serious now.




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    ohhhhhhhhhhhhhhhhhhhhhh DAH i CCCCCC

    thanks alot jmac i realy enjoyed this i will rework it and try it again not to bad for a newb though eh

    Mat




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    this is fun for supa hehe

    i am such a nerd




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    Re: 27 hz slot box for 2 15 tempest just for fun plan

    hey supa C you trumpet player ? by any chance




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