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Need help porting my box.

Discussion in 'Audio & Video' started by 03f5sp, Nov 15, 2012.

  1. Nov 15, 2012 at 7:24 PM
    #1
    03f5sp

    03f5sp [OP] Well-Known Member

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    I've got an Atrend box that completely fills the space behind my back seats with two 10"s. I want to port it but I don't know how big the hole should be or how long the tube thing should be(the box is only 8" deep. I want to tune it for the lowest frequency possible. Thanks and sorry for the newb-ness.
     
  2. Nov 15, 2012 at 8:09 PM
    #2
    03f5sp

    03f5sp [OP] Well-Known Member

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    Never mind. I found a port calculator and figured it out. The box has 1.125^3 feet and I found a 2.5"x4" port tube so it'll be tuned for 36hz.
     
  3. Nov 15, 2012 at 8:39 PM
    #3
    ItalynStylion

    ItalynStylion Sounds Gooooood

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    If you use a single 2.5" port for two tens you're asking for trouble. That box will huff and puff like a mother fucker. You'll need a larger port diameter for sure. I'd say AT LEAST two 3" ports for it. Unless they're wimpy tens. If you give me the specs of the subs I could figure it out.
     
  4. Nov 16, 2012 at 12:53 AM
    #4
    03f5sp

    03f5sp [OP] Well-Known Member

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    Each sub will have it's own port.
     
  5. Nov 16, 2012 at 8:23 AM
    #5
    ItalynStylion

    ItalynStylion Sounds Gooooood

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    You'll need at least a 3" port I believe. At higher volumes you'll hear the noise from the ports. And how did you settle on a 36hz tuning frequency? I'm assuming this was specified or calculated from the subwoofers specs?
     
  6. Nov 17, 2012 at 3:06 PM
    #6
    03f5sp

    03f5sp [OP] Well-Known Member

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    Front 5100s @ 2.5, 1.5 AAL, 265/75-16 all terrains
    I used a calculator for the frequency. With a 3" hole i won't be able to use a long enough tube. Either way, It'll still be better than being sealed.
     
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