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    riddla's Avatar
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    box building help for subs

    yo dudes, wats up,

    my box dimensions are 34 Long x 16.5 W x 16 D...

    I built this box off my head a long time ago & wana use it for 2 x 12in vibe subs rated at 350w rms & 700w peak power.

    on the specs tho, it said use a box of 1.5cubic ft but what i wana know is how much would this box size be..
    its got split chambers & i wana port it as well for the sub in each chamber..

    fs in hz in 32
    QTS=0.51
    VAS in cubic ft=3.34
    VAS in litres=84.50
    Xmax in inches=0.29
    Xmax in mm=7.5
    max power in watts=700
    QMS=4.86
    Zmax=34.15
    Fo in hz=32
    magnet weight=50
    recommended sealed enclosure = 1.5 cubic feet

    This is the spec of the subwoofer & its calle vibe pt120 series..

    Ive seen loads of these boxes ported from the manufacturer but i would like to know if the box ive made is suitable & how big & long sholud i make the port?

    Any help would be graceful as this is doing my head in







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    Re: box building help for subs

    Go to this web page and it will help

    http://www.sachelledesigns.com/Enclosurevolume.html




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    riddla's Avatar
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    Re: box building help for subs

    Can someone please help with the mesearuments as im not to good at this sort of thing.
    Ive built a box measuring
    L =33.5in
    H= 14in
    W=13.5in
    Ive used a divider in the middle & have place a 4in port of 11.5in into the box.

    Ive tested the box after sealing it & it sounds wicked but i know i can make the box sound deeper.
    How can i do this as there is no more space for me to increase the port length?

    wat about a 90 degree angle in the box to increase the length, would that be ok.

    Also wat frequency do u think my box is tuned to?

    It sounds very good considering i just put it all together of my head

    HELP PLEASE, CHEERS




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    Re: box building help for subs

    some1 gimi some replies please???




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    Re: box building help for subs

    thanks for the reply mate, the tuning frequency u mentioned i would say is wat my box sounds like.
    dont get me wrong, the bass is deep but wat about making it sound deeper?
    can i use a longer port with a 90 degree angle?
    i want to get in the the region of say 25 to 35hz?




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    Re: box building help for subs

    oh yer, there is a port in each division, 1 4in at 11.5in long as my box is 13in deep so i couldnt go any longer?




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