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    Afboy143's Avatar
    Afboy143 is offline aka Bumpin Expo



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    Help on making this blo-thru??

    Hey all, well I want to b able to build this box for my truck for the 2 type R's i have so I need some help! First of all, how would i build the specs for this box. Would i build it to the specs of the bandpass or sealed?? Also how big should the port b in the middle? I really want ot start building this box but I need help! Thanks guys!
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    paikiah's Avatar
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    it's a bandpass...
    looks good, sounds horrid.

    If you really want to design one, I guess working on winISD pro is about the only way I know how. The enclosure you have attached looks like a 4th order, although with triple chambers and double drivers, I'm not so sure.



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    i have a box like that with 2 older rockford fosgate the punches in it in my room hooked up and it doesnt sound too horrid accualy. and it gets pretty loud



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    oh, I'm SURE it would be very loud...

    but try to play a sinewave...

    you'll see what I mean when there's nothing to listen to at both ends of the tuning frequencies..



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    Originally posted by paikiah
    oh, I'm SURE it would be very loud...

    but try to play a sinewave...

    you'll see what I mean when there's nothing to listen to at both ends of the tuning frequencies..
    sorry i dont know what sinewaves are? is a cd u paly that has certain music played or something?



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    it's just a tone at different levels...

    bandpass get VERY loud at certain frequencies (rather narrow) and they have a deep drop-off slope so anything out of the bandpass tuning range will be just about inaudible.

    Most bandpass are for shows...



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