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  1. #1
    JBloud47's Avatar
    JBloud47 is offline Senior VIP Member



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    Box help

    I have a box that iv alreayd built but im ganna make some changes i want to put in a changble port but i cant figure out how to calculate for the port area and lenght, the box is about 12.5 cubes wiht no port or subs. im looking for a port that will tune to 34 and then a comp port @ bout 47.



    A New Begining Starting Over
    2003 F-150 extended Cab
    Head unit: Pioneer 880
    Speakers: JBL comps
    Amp: JBL 100x4
    Sub Amp: ?
    Subs: Possible 4 SX 15's or 2 SX 18's
    Box:18-20 sq ft @ 30
    Batts: Still Need
    alt: mechman still to order
    Wire: Lots of 1/0

    refs: rem, mihklo, ilaydit, Mirage_Man,Looney_Tune,fawd06, LuckyT




  2. #2
    Lowjacker's Avatar
    Lowjacker is offline 1/1 of SexualConstipation



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    Re: Box help

    i believe you'll need more details like sub displacement .....etc...... but I'm a newb who doesn't know anything beyond that.....sorry



    Car : 1988 Pontiac LeMans Aero-Coupe
    aka 'The Death Rocket'
    HU : DEH-16
    Fronts : Infinity tweets
    Rears : XS-R6941
    Subs : (2) XS-L100P5W
    Sub Amp : Memphis 16-PR 150.2
    Enclosure : Sub Zone sealed (2 cu. ft.)
    Hitting 130 dB* with this setup.....Priceless

    Quote Originally Posted by Slammed View Post
    I throw poop at squirrels

    *130 dB rating is not guaranteed. Reading was done with a Scosche Boom Stick and therefore can not be relied upon.
    Everything stated by me is my OPINION....if you don't like it I don't care......

  3. #3
    JBloud47's Avatar
    JBloud47 is offline Senior VIP Member

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    Re: Box help

    i know that the sub dis is .36 cubes, besides that all i need to calc is the port displacment , but i cant do that til i figure out how big it needs to be compared to the size of the box.



    A New Begining Starting Over
    2003 F-150 extended Cab
    Head unit: Pioneer 880
    Speakers: JBL comps
    Amp: JBL 100x4
    Sub Amp: ?
    Subs: Possible 4 SX 15's or 2 SX 18's
    Box:18-20 sq ft @ 30
    Batts: Still Need
    alt: mechman still to order
    Wire: Lots of 1/0

    refs: rem, mihklo, ilaydit, Mirage_Man,Looney_Tune,fawd06, LuckyT

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