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Im building a 3ft^3 ported enclosure for my audiobahn 1505, Im thinking a 4x10 rectangle port.. How do i calculate what tuning frequency that i will get with different port lengths... thanks guys
Jeff Cole
------------------ In the everpresent quest for bass, we must always sacrifice our hearing, so buy stock in Miracle Ear while its cheap!!!
R is the radius of the port in inches Fb is the tuning frequency in Hz Vb is the volume of the box in cubic inches L is the length of the port in inches
With non circular ports, you just find the surface area, and calculate what radius will give the same area. Yours would be:
4 x 10 = 40 square inches
Area of a circle is R^2 x 3.14 so,
R^2 x 3.14 = 40
R^2 = 12.73...
R = 3.57
So you'll all the calculations with the radius being 3.57 inches.
Any questions?
------------------ rybaudio@freeze.com
The goal: Accurate musical reproduction in the mobile environment
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