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Slot vented box for 12" Type X

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Slot vented box for 12" Type X

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I'm building a box with a buddy for his Alpine Type X 12...

The optimum box specs are 14.5 x 16.5 x 17.5 vented (which is 1.8 cubes), my question is how would I go about constructing the vent? And what should I tune to?

12Volt.com's calculator says that 1.5 x 12 vent = 22.81 port length (at 32hz)

How would I go about creating all of this, as I have never built a ported box before...

Verified Answer
  • This calculator is a little crude, but it seems like its what you're looking for.  Just change the red numbers to get the box shape and volume, etc that you're looking for.  You typically use the wall of the box as one side of the vent, and cut a piece of extra wood for the other side.  Here's an example.

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  • This calculator is a little crude, but it seems like its what you're looking for.  Just change the red numbers to get the box shape and volume, etc that you're looking for.  You typically use the wall of the box as one side of the vent, and cut a piece of extra wood for the other side.  Here's an example.