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    Funtoss's Avatar
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    Need help with subwoofer and box design plsss

    Hi guys, i need help deciding what build to go with.. i m deciding between ported enclosure or 4th order bandpass for my car which is a 1996 mitsubishi lancer sedan. I want to play lows and just make my subs play lows with authority and shake things lol I got 2 12" Earthquake DBXI subs.
    I'd also like to know what my car's frequency peaks at? or how do i find this out?

    look for earthquake dbxi 12 to search subwoofer specs in pdf on google.

    Help me with anything you can think or or come up with? thank you







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    Re: Need help with subwoofer and box design plsss

    i would aim around 4-5 cuft ported tuned to 28hz .depending on what you can fit, lancer trunk gives you little to work with . 4th order out the question because of the room required to make the enclosure operate properly.



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    Re: Need help with subwoofer and box design plsss

    okay thanks man, so 28hz will give me low bass ? it will shake the whole car up nicely aye?




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    Re: Need help with subwoofer and box design plsss

    I wouldn't tune that low at all.

    Tuning is subjective to what your goals are as well as the application itself.




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    Re: Need help with subwoofer and box design plsss

    whats the lowest that i should go with 1 15"??




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    Re: Need help with subwoofer and box design plsss

    Quote Originally Posted by Funtoss View Post
    whats the lowest that i should go with 1 15"??
    32-36. What 15" are you talking about?




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    Re: Need help with subwoofer and box design plsss

    Quote Originally Posted by DoesDad View Post
    32-36. What 15" are you talking about?
    Earthquake DBXI 15D




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    Re: Need help with subwoofer and box design plsss

    What kind of music do you listen to?



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    Re: Need help with subwoofer and box design plsss

    Quote Originally Posted by mazdakid View Post
    What kind of music do you listen to?
    lol rap! also at times anything that is bassy and goes low and shakes stuff




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    Re: Need help with subwoofer and box design plsss

    28 is pretty low but it depends on your box style too and what way you fire everything.
    I have my aero ports tuned at about 35 and it still plays down into the 20s nicely and shakes some stuff pretty good. My ports fire into a loading wall/slot though.
    When i fired everything forward i had to tune lower to get the sound i wanted, but if i turned the box around and fired at the rear of the car i didnt have to tune as low.



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    Re: Need help with subwoofer and box design plsss

    What is this firing thing that your talking about?? i'll probably go with 30-32hz ... still deciding, btw how many cuft box would i need and is 3.5" slot port too much?
    box dimensions atm is
    W = 28
    Depth top and bottom = 22
    H = 16




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    Re: Need help with subwoofer and box design plsss

    Ive never used those subs but 3.5-4 cubes for a si gle 15 would probably be good.
    By firing i mean what way you face the sub and port in your car.
    Your box internally is 14.5 so your port would be 14.5x3.5 if you used a slot port so around 50sq inches of port.
    Lots of people go with around 12-16" per cube for a slot so you would be in thay range with a 3.5-4 cube box.



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    Re: Need help with subwoofer and box design plsss

    I'll have to seal it off if i put it facing front right? but it sounds pretty loud when i face subs at the back

    i was just wondering if 30hz would be fine for a single 15"?
    its rated at 750w rms and 2000w max
    lol i'll be giving it 1000w rms @ 2 ohms

    i just hope it'll be good on lows or do i need more cone area? as in more subs?? or should a single 15" be enough?

    does sub facing front sealed off vs facing back make a difference?
    Last edited by Funtoss; 08-16-2012 at 08:49 AM.




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