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Reload Thread: box for 2 JL 12W3v2's

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    LuciousLeftfoot's Avatar
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    Icon32 box for 2 JL 12W3v2's

    Hey, I need help on the dimensions for a sealed box for 2 JL 12W3v2's. My trunk space is ~ 37Wx15Hx32D, and I want it to have about 60/40 SPL/SQ ratio. I was told by the guys at Sound Advice (a tweeter company FYI) to just double the volume (1.25), and the specs at JL call for 23x14x10 for a single sub (http://www.jlaudio.com/subwoofers/pdfs/12W3v2_DS.pdf). Everyone tells me to just double the height, but I can't fit 46 inches in my trunk obviously, and I am not the most mathmatecially inclined person out there. They told me they would build me a box for 300 bucks, but that is almost as much as I paid for the subs themselves, so I would rather spend 30-40 bucks and do it myself.

    Sorry about the rambling, I just wanted to give as much info as possible so I could get a good answer. Thanks in advance for the help.







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    Randy Savage's Avatar
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    Re: box for 2 JL 12W3v2's

    Originally posted by LuciousLeftfoot
    Hey, I need help on the dimensions for a sealed box for 2 JL 12W3v2's. My trunk space is ~ 37Wx15Hx32D, and I want it to have about 60/40 SPL/SQ ratio. I was told by the guys at Sound Advice (a tweeter company FYI) to just double the volume (1.25), and the specs at JL call for 23x14x10 for a single sub (http://www.jlaudio.com/subwoofers/pdfs/12W3v2_DS.pdf). Everyone tells me to just double the height, but I can't fit 46 inches in my trunk obviously, and I am not the most mathmatecially inclined person out there. They told me they would build me a box for 300 bucks, but that is almost as much as I paid for the subs themselves, so I would rather spend 30-40 bucks and do it myself.

    Sorry about the rambling, I just wanted to give as much info as possible so I could get a good answer. Thanks in advance for the help.
    PM a guy named Jmac, he is the box-master.





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    LuciousLeftfoot is offline Junior Member

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    Dual 4 Ohm.

    I am using a Power Acoustik Saphire Series amp, not exactly sure which version I am using, but I *think* it is the SP2x-1600 (http://www.poweracoustik.com/sapphire.htm).

    EDIT: I'm wrong, it is the SP2x-820, I just checked.
    Last edited by LuciousLeftfoot; 01-08-2003 at 05:00 PM.




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    So what you are saying is my only options are ported, and a sealed won't fit in that area? If thats the case, .

    Thanks for the help Jmac, I will see what I can do. I have built sealed boxes before, but never messed with ported, but if its my only option, then I guess now is a good time to learn.




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    ****, I feel like an idiot right about now

    I guess I want to get the dimensions on a sealed box then, if its not too much trouble, could you do that, if it is, I can understand why. Sorry for making you go thru that trouble.




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    You are the man, I don't care what they say about you

    Seriously, thanks a million, you saved me some money that I didn't want to part with, and for that, I am grateful. Maybe I will post more than 5 times around here




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    hey jmac,
    which winISD version are you using and are those box volumes net or gross measures?




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    jmac,
    could you give me box specs for the same JL 12w3v2 woofers with a shared port?, but gettin 300 watts rms and they are the dual 2 ohms.
    i was messing with winisd and was thinking of a 1.75" wide by 14" high port by 14.75" long, but im still unsure about the final length. and all this would be in a 3.69 net cu ft box. could you give me some suggestions or help?
    Last edited by flyg20; 02-10-2003 at 07:42 PM.




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    how about anyone help?




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