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View Full Version : Helpful to those designing an angled box.



DejaWiz
11-14-2006, 03:22 PM
Found this volume calculator.

http://grapevine.abe.msstate.edu/~fto/tools/vol/pyramidlong.html

Anyone have any others to post?

jdawg
11-14-2006, 03:58 PM
fail geometry?

ultimate157
11-14-2006, 04:02 PM
Just apply (b1+b2)/2 for length AND width ...

DejaWiz
11-14-2006, 04:22 PM
fail geometry?

No I didn't. But there are many out there that might just find a tool like this useful to make the job easier. If we can keep 1 person from buying a prefab shitbox, then that's 1 saved soul.

j3bus2k3
11-14-2006, 04:24 PM
why not just add the volume of the rectangle to the volume of the triangle(s)...?

DejaWiz
11-14-2006, 04:41 PM
why not just add the volume of the rectangle to the volume of the triangle(s)...?

As easy as that may be for us to do, there are those out there that either a.) don't understand how to do it, or b.) to lazy to break out a piece of paper and do the calculations. Which is why I posted the calculator to help others out.

Rich B
11-14-2006, 04:45 PM
I like the one on this page better because it also asks for the thickness of the wood you will be using.

http://www.the12volt.com/caraudio/boxcalcs.asp


Middle of the page, titled "Volume Calculator - Wedge Enclosures 1" and "Volume Calculator - Wedge Enclosures 2".

ultimate157
11-14-2006, 04:53 PM
why not just add the volume of the rectangle to the volume of the triangle(s)...?

That's much harder than doing (w1/w2)/2 * height * (b1/b2)/2

DejaWiz
11-14-2006, 04:59 PM
That's much harder than doing (w1/w2)/2 * height * (b1/b2)/2

And that's true!

Immacomputer
11-14-2006, 05:54 PM
Call me old fashioned, but I refuse to use any of those random calculators. I would much rather use my geometry skills and knowledge of how I will build my enclosure than just putting in random numbers and trusting them.

heyman421
11-14-2006, 06:01 PM
Ya, i tried using the calculator programs to design a box, but without fail, every program told me different dimensions, and different port lengths.

It's more work to figure out whether the calculations are correct, and what displacements they're deducting, then to figure it out for yourself.

DejaWiz
11-14-2006, 06:08 PM
It's more work to figure out whether the calculations are correct, and what displacements they're deducting, then to figure it out for yourself.

I agree. Although a calculator can be helpful when undergoing the foundational process of a box design. Roughly X dimensions will yield roughly Y volume.