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Reload Thread: What am i tuned at?Cu Ft?

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    What am i tuned at?Cu Ft?

    i tried to finds out by myself but i couldnt get it right, so i build a box that is 32X20X16 and i put 3 4" by 9" aeroports, so i was wondering what is my tuning at and what is th ecu ft i got??

    thanks in advance, EM







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    Re: What am i tuned at?Cu Ft?

    ports flared on both ends?






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    Re: What am i tuned at?Cu Ft?

    ~4.5 ft^3 @ 43 Hz

    I used your dimensions as outer dimensions and assumed 0.75" thick MDF. Also, I did not assume any port displacement, so net volume will actually be bit less, and tuning will be ~1 Hz higher.

    Try making the ports 16.25" (longest possible assuming ports on baffle and 20" deep box). That'll get you 4.35 ft^3 @ 34 Hz

    Yeah, and I assumed ports flared on both ends.




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    Re: What am i tuned at?Cu Ft?

    5.925ft3 gross

    (32 x 20 x 16) / 1728

    gets gross internal volume






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    Re: What am i tuned at?Cu Ft?

    yeah ports have flares at both ends. so what could i do to lower my hz's i think 43 is too high, but what does it really mean when its that high and if i lowered it what would it sound like??

    later, em




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    Re: What am i tuned at?Cu Ft?

    2 ways to lower your hz

    1. make the box bigger
    2. make the ports longer

    here is a port calculator

    http://psp-inc.com/psp-inc.com/publi...calculator.cgi



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    Re: What am i tuned at?Cu Ft?

    is 43hz good or is it bad??

    later, em




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    Re: What am i tuned at?Cu Ft?

    Quote Originally Posted by BigEM
    is 43hz good or is it bad??

    later, em
    Sound quality and low end capabilities will be compromised, but output should be pretty high.

    Generally most street beaters prefer a tuning in the 30-35hz range, maybe into the upper 30's depending on the style of music they listen to.

    43hz is, IMHO, too high.




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    Re: What am i tuned at?Cu Ft?

    Quote Originally Posted by Worlddre
    5.925ft3 gross

    (32 x 20 x 16) / 1728

    gets gross internal volume
    gross = external volume





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