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    Sealed box help

    I'm relatively new to car audio. I have a 4ch amp and some aftermarket speakers. However I don't have a sub stage yet and I'm looking into it right now. I plan on getting an IDQv2 12". I want a SQ sub and that seems to fit the bill. I've been looking around for specs on the box best suited for it. I also plan on making the box(sealed). The dimensions I plan on using are 20" wide, 16" tall, a top depth of 7.125" and a bottom depth of 8.125". I'm looking for an end result of about .88ft^3. The speaker displacement is .07 ft^3. With those dimensions I end up with around .88ft^3 net. But I don't think I'm accounting for the 3/4" MDF. Can someone tell me what exactly I need to do before designing my box.
    Thanks.
    Sorry for wall of text...







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    Re: Sealed box help

    http://www.the12volt.com has a calculator.




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    Re: Sealed box help

    Those dimensions give 0.873ft³ before displacement, 0.803³ after displacement.



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    Re: Sealed box help

    How do you figure?




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    Re: Sealed box help

    Very good, easy sealed box calc:

    http://www.rockfordfosgate.com/rftech/box_wizard.asp



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    Re: Sealed box help

    Thanks for those links, appears as though I was doing it correct, just needed to be sure.




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    Re: Sealed box help

    Quote Originally Posted by thebread View Post
    How do you figure?
    I did me some Maths

    (Length - 1.5) * (Width - 1.5) * (Height - 1.5) = Volume / 1728 = Cubic Feet



    1991 Chevrolet S10 Tahoe | Extended cab | 4.3L (262ci) V6

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    Re: Sealed box help

    Yeah I did that, you must have used a dimension that I didn't accidentally.




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    Re: Sealed box help

    it would be a lot easier to build if you made it a straight rectangle. no angle cuts to worry about making and sealing it up good would be a snap.





    Quote Originally Posted by eharri3 View Post
    I have 4 12s getting 2K watts rms and my front stage is 4 Walmart JVC coaxials running off 16 watts rms of head unit power. My sub sounds fine but my mids and highs don't sound very clear and start to distort long before my subs do. Anybody know why? Any suggestions?

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    Re: Sealed box help

    Quote Originally Posted by nineball View Post
    it would be a lot easier to build if you made it a straight rectangle. no angle cuts to worry about making and sealing it up good would be a snap.
    Oops... reading > me. I didn't notice the 4th measurement



    1991 Chevrolet S10 Tahoe | Extended cab | 4.3L (262ci) V6

    Head Unit: Pioneer DEH-P5100UB
    Wiring: Knu Konceptz Kolossus Fleks 4AWG
    Amplifier: Sundown SAX-100.4 - Shipping as we speak
    Components: Image Dynamics CXS62 V.2 - Shipping as we speak
    Subwoofers: Still need to be ordered


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    Re: Sealed box help

    Quote Originally Posted by nineball View Post
    it would be a lot easier to build if you made it a straight rectangle. no angle cuts to worry about making and sealing it up good would be a snap.
    Yeah, I was thinking that myself, and was just going to make 1 depth of 7.625 as opposed to the wedge design.




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