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Reload Thread: tis a bad box? tis a good box?

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    d audio 450's Avatar
    d audio 450 is offline Registered User



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    Icon32 tis a bad box? tis a good box?

    ok- im trying to design a good box for a 15xxx...its going to be goin in a 2000 mustang...
    the trunk is shallow, but i know i can manage to fit it all in there...
    i attacjed a pic of what i was thinking...it could be a bad idea, but i was wondering if the sub was in the sealed part of the box, and the box was placed faced up against the backseats if it would direct the bass more into the cabin of the car rather than rattling the trunk more...the sub in the picture i drew is angled doward.... ive heard people mention cancellation and stuff when facing subs towards the cabin of the car, is it true? why is this? i would exert alot of effort to not have a rattling trunk and whatnot- i want clean-harditting bass (i was told a 15xxx could easily accomplish that) and im going sealed b/c of that- id make it out of 1" mdf and carpet it and all....the sub will be powered by a jbl 1200.1 again- going into a 2000 mustang-
    any help or suggestions are appreciated-
    -pat
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    mykeys's Avatar
    mykeys is offline URABUS



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    Not being a bass expert here is what I think.
    Firing into the cab will be louder but yeah it does have a tendency for cancellation.. It has more to do with front speaker placement and the specific vehicle though. Firing to the rear isn't quite as loud, BUT it is what people call corner loading and extends the low end. Corner loading usually does make anything loose rattle or buzz. If you take the time and leave yourself enough room you can use damping material to eliminate most of it. Without modification though it is nearly impossible to get rid of all of the rattle. In places where mat won't qite go try spray on damping material or if its a space that needs a lot try something like spray expanding foam to fill the hole, being extremely carefull not to over do it because it can and in some cases has bulged panels inside and out.

    I was thinking about your box design. I don't know if its a symetry thing I have going on or what but I would angle the sub to the same angle as the panel it is going to face. angled up for the back seat, or verticle for the rear of the vehicle. You could also downfire it but you loose a bit more volume. It does however make the bass much harder to localize, and you would have less trouble with rattling panels in the hatch area..

    Mike



    Your friendly neighborhood subaru freak!

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    d audio 450's Avatar
    d audio 450 is offline Registered User

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    good words. thanks a lot
    -pat




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