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  1. #1
    LuNaTiC's Avatar
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    Question for OLD_SCHOOL

    I don't want to bug you but you seem to know what your doing when it comes to boxes, sooo....

    lets assume i have a 5 ft^3 box and to tune it to lets say 40Hz, using a round port it requires a 5 in by 8 in long port. could i add another port the same size and length to add port area w/o changing frequency? or will the frequency be changed?



    97' Ford Probe..
    Sub - 2 18" FI BTL's shipping at this moment.
    Amp - undecided, help plz
    H/U - Kenwood Excelon x779
    Wiring - Lots of 1/0 gauge, where should I buy from?
    Box Specs - Dunno yet
    Quote Originally Posted by dleccord
    i drive at the speed limit... this way i can listen to music longer




  2. #2
    OLD_SCHOOL's Avatar
    OLD_SCHOOL is offline CarAudio.com Elite



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    Re: Question for OLD_SCHOOL

    it will change see this link for a pretty good explanation on how to figure it out the right lengths for multiple ports

    ps in a 5 cube box with 1 5x8 inch port the tuning would be around 30 hz just off the top of my head with out doing the math



    dodge dakota 2003 quad cab

    CLARION DXZ545MP
    Alpine MRV-T420 V12
    6.5 boston comps in the door ( maybe focal soon or ID)
    2 adire tempest 8 ft^3 @23hz
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    kickerlivinloud's Avatar
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    Re: Question for OLD_SCHOOL

    PM's do wonders




    Jon




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    Re: Question for OLD_SCHOOL

    yeah but the rest of us don't get to benefit from any information changed.




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    Re: Question for OLD_SCHOOL

    Quote Originally Posted by Jayhawkk
    yeah but the rest of us don't get to benefit from any information changed.
    just PM him and ask him to copy/paste.




  6. #6
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    Re: Question for OLD_SCHOOL

    Well if he pm'd the original question I wouldnt even know it was asked




  7. #7
    LuNaTiC's Avatar
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    Re: Question for OLD_SCHOOL

    Quote Originally Posted by kickerlivinloud
    PM's do wonders




    Jon
    no 1 likes you.



    me



    97' Ford Probe..
    Sub - 2 18" FI BTL's shipping at this moment.
    Amp - undecided, help plz
    H/U - Kenwood Excelon x779
    Wiring - Lots of 1/0 gauge, where should I buy from?
    Box Specs - Dunno yet
    Quote Originally Posted by dleccord
    i drive at the speed limit... this way i can listen to music longer

  8. #8
    LuNaTiC's Avatar
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    Re: Question for OLD_SCHOOL

    Quote Originally Posted by OLD_SCHOOL
    it will change see this link for a pretty good explanation on how to figure it out the right lengths for multiple ports

    ps in a 5 cube box with 1 5x8 inch port the tuning would be around 30 hz just off the top of my head with out doing the math

    no link. But do you happen to know if winisd beta is accurate in calculating multiple ports?



    97' Ford Probe..
    Sub - 2 18" FI BTL's shipping at this moment.
    Amp - undecided, help plz
    H/U - Kenwood Excelon x779
    Wiring - Lots of 1/0 gauge, where should I buy from?
    Box Specs - Dunno yet
    Quote Originally Posted by dleccord
    i drive at the speed limit... this way i can listen to music longer

  9. #9
    LuNaTiC's Avatar
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    Re: Question for OLD_SCHOOL

    Also, does ne 1 know if winisd beta figures port displacement or do u have to do that yourself?



    97' Ford Probe..
    Sub - 2 18" FI BTL's shipping at this moment.
    Amp - undecided, help plz
    H/U - Kenwood Excelon x779
    Wiring - Lots of 1/0 gauge, where should I buy from?
    Box Specs - Dunno yet
    Quote Originally Posted by dleccord
    i drive at the speed limit... this way i can listen to music longer

  10. #10
    OLD_SCHOOL's Avatar
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    Re: Question for OLD_SCHOOL

    sorry http://www.jlaudio.com/tutorials/ports/index.html

    winisd beta is not accurate on hardly anything

    winisd pro with the update is pretty good though



    dodge dakota 2003 quad cab

    CLARION DXZ545MP
    Alpine MRV-T420 V12
    6.5 boston comps in the door ( maybe focal soon or ID)
    2 adire tempest 8 ft^3 @23hz
    1 hifonics bxD 1500
    1/0 power and stinger blocks terminals

    AIM Id traumanurse06 add me

    http://www.sounddomain.com/memberpage/681937/1 just set ti up so it is kinda lame

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