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    Vincer77's Avatar
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    What Do You Think Of This Box Design

    Picked up a pair of Polk db104s from Best Buy last weekend. Here is a drawing (sorry, no 3d) of the the box I am intending to build for a 2002 4runner. Box will lay flat in the rear between the fender wells, subs pointed up and ports firning to rear. These will be powered with a BA GT1105 amp.

    I used the Polk recommended volume and vent specs for a ported enclosure. They list an Fb = 41.18Hz and an F3 = 34.26 Hz . I assume that is box frequency and system resonant frequency. The amp will sit just behind the rear sets and be accessible by folding seat back down.

    Should I have a vent for the amp compartment? Do I need to add a fan for cooling?

    Any other comments? This is my first build.



    I posted in the subwoofer forum first, but no one commented. This seems like the more appropriate place.







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    Re: What Do You Think Of This Box Design

    Quote Originally Posted by Vincer77 View Post
    Picked up a pair of Polk db104s from Best Buy last weekend. Here is a drawing (sorry, no 3d) of the the box I am intending to build for a 2002 4runner. Box will lay flat in the rear between the fender wells, subs pointed up and ports firning to rear. These will be powered with a BA GT1105 amp.c

    I used the Polk recommended volume and vent specs for a ported enclosure. They list an Fb = 41.18Hz and an F3 = 34.26 Hz . I assume that is box frequency and system resonant frequency. The amp will sit just behind the rear sets and be accessible by folding seat back down.

    Should I have a vent for the amp compartment? Do I need to add a fan for cooling?

    Any other comments? This is my first build.



    I posted in the subwoofer forum first, but no one commented. This seems like the more appropriate place.
    Manufacturers specs are often not ideal for every application. Enclosure design should take into account power given to the driver, cabin frequency response, music tastes, etc. Have @Buck ; design you one. He's not expensive lol, and he's pretty dang good at it.



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