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    Icon32 Enclosures for DC Level 4 12s

    I'm putting 2 Dc lvl4 12s in my trunk, inverted, firing towards the back of the trunk. I will have at least half the seat down most of the time and will take out the speakers in the rear deck. I'm thinking about building 2 boxes like this:
    Box Width: 19.5
    Box Height: 17
    Depth: 15
    Wood Thickness: .75
    Square Port Width: 1.75
    Square Port Length 2 : 8
    Volume: 1.796 ft^3
    Square Port Area: 27.125
    Tuned Frequency: 37.99

    This is what I used to come up with that: RE Enclosure Calculator
    I know 1.5ft^3 is the recommended box volume but The tuning frequency was too high at that volume while keeping 18 in^2 of port area per ft^3 of box volume.

    What do you guys think? Too big of a box?







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    Re: Enclosures for DC Level 4 12s

    i hear that the RE calculator isn't accurate and can give you some incorrect info sometimes.




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    Re: Enclosures for DC Level 4 12s

    oh great.. i tried bass box 6 pro but that had too many options.. guess i'll move on to winISD.. or is there a better option for a square slot ported box?




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    Re: Enclosures for DC Level 4 12s

    I'd go 2ft^3 with a 33hz tuning using the specs they provide on their site. Tuning at 38hz(10hz above the fs of the woofer) is going to give you a very large peak and kill your low-end.



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    Icon14 Re: Enclosures for DC Level 4 12s

    Hey RAM_Designs, I put in for a quote on your website.




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    Re: Enclosures for DC Level 4 12s

    Quote Originally Posted by n3wt View Post
    Hey RAM_Designs, I put in for a quote on your website.
    You sure you want to go with a 27hz tuning?



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    Re: Enclosures for DC Level 4 12s

    a single box is more efficient if you can fit it



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    Re: Enclosures for DC Level 4 12s

    I wanna go with whatever would sound best for daily driven with a few db drags for fun on the weekends. I have been recommended 35-38hz with 18sq in/cu ft for the port area by corona_jeff, the guy I got the subs from. Also found 32-34hz as a recommendation for these subs on posts on this forum. I got 27 hz from the dc website but that's pretty low. I still want some trunk space for at least a briefcase/get my spare tire out hah. What do you think is a good tuning freq?
    Last edited by n3wt; 03-13-2011 at 03:47 AM. Reason: number fail




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    Re: Enclosures for DC Level 4 12s

    32-35hz

    Dr Subwoofer says 35hz is the best tuning for a box with a porthole/airhole, yet his box is tuned to 37hz or is that 38hz???











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    Re: Enclosures for DC Level 4 12s

    thanks, i'm goin with 35hz because it sounds good, hah




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    Re: Enclosures for DC Level 4 12s

    Also, check out Torres' calc over on SMD forums. That should help as it's more accurate than RE's calc.




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