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    rangerboy101's Avatar
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    Ways to lower tuning?

    Any way to lower the tuning on my box? It's currently tuned to 35hz and I'd like it to be more around 30hz. Building a new box is not an option because I really don't want to spend $140 to build an identical box just to have it tuned lower. The box is just a simple slot-port designed by Buck. Thanks in advance.



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    Re: Ways to lower tuning?

    you're going to have to make the port longer or shrink down the port area.

    btw.. what do you want for the AQ in your sig?



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    rangerboy101's Avatar
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    Re: Ways to lower tuning?

    Quote Originally Posted by groundpound4200 View Post
    you're going to have to make the port longer or shrink down the port area.

    btw.. what do you want for the AQ in your sig?
    I need to update my sig. I sold it already haha sorry. What part of the port do I need to make longer? I'm a newb when it comes to tuning.



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    Re: Ways to lower tuning?

    Per the SA15 specs they like pretty generous boxes.. Im guessing in the box you have it now there is premature rolloff which may be part of the problem.



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    Re: Ways to lower tuning?

    There's nothing wrong with the current box. I just wanted it to be tuned a little lower.



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    Re: Ways to lower tuning?

    Quote Originally Posted by rangerboy101 View Post
    There's nothing wrong with the current box. I just wanted it to be tuned a little lower.
    dont mess with it if you like it now. its just gonna be a big pain in your ***



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    Re: Ways to lower tuning?

    If he were to add mass inside the enclosure to lower the compression area, while maintaining the same port area, wouldnt this lower box tuning?



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    Re: Ways to lower tuning?

    yeah I think so...

    take 2 boxes, one smaller then the other. With the exact same size/length port, the smaller box would be tuned lower?



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    Re: Ways to lower tuning?

    yes, but it would also lower his final airspace, which might screw with things... you could always extend the port out of the box a lil... would have to know exact dimensions on everything to tell you how much tho



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    Re: Ways to lower tuning?

    So it can be done? lol

    ---------- Post added at 05:03 PM ---------- Previous post was at 05:02 PM ----------

    I'll see if I still have the email from Buck with the pictures/deminsions of the box.



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    Re: Ways to lower tuning?

    i wont say a definate yes... till i see the box... but most times, yes it can



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    Re: Ways to lower tuning?




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    Re: Ways to lower tuning?

    Yeah...
    OP, if you could take some MDF, the same height internally of your enclosure, and cut them into say 3 inch strips, you can add them til you get the tune you like. To be more precise, here's an online calculator to figure out how much airspace each section will take up.... Use the bracing calculator, just leave the cutouts at 0 value. It will give you your cubic inches for the added mass... enter you info at the top so you can get an idea how it will effect your enclosure.
    Enclosure Volume Calculator (EVC)



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    Re: Ways to lower tuning?

    And just so everybody knows I'm not saying anything bad about Buck or his design. I just wish I would've had him design me a box with lower tuning.



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    Re: Ways to lower tuning?

    Making the internal space less with the same length port equals higher tuning. so either inverting the sub and/or making the port longer on the outside would work



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