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Reload Thread: how to build a ported box for 2 alpine type r

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    loko's Avatar
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    Icon7 how to build a ported box for 2 alpine type r

    i need help building a ported box for two alpine type r.i have the in one already but i think the box is two small anmd tuned low because it doesnt hit as hard.ive seen other alpine type r in a bigger box and sound great,so so decided to build one but i dont how to start and i want to tune thebox from 35hz to 42hz.and i dont even know how to tune them.please any help with diagrams would really help thank u.







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    Re: how to build a ported box for 2 alpine type r

    4th order if you are looking for those frequencies...



    1999 Tahoe
    2 sa12s
    4th order
    145.18 @33z... with less than 500 watts!

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    Re: how to build a ported box for 2 alpine type r

    whats 4th order bro.and i i want 32 to 38hz how would i go to building that. thanks




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