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Reload Thread: Ported box for 1 15" Audiobahn Immortal Sub

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    pw91686's Avatar
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    Ported box for 1 15" Audiobahn Immortal Sub

    I am wanting to make a ported box for my 15" Immortal sub. The recommended box dimensions from Audiobahn's website for the Ultimate SPL Bass Box are:

    Air Space (Cu. Ft.)- 3.75
    Port size (inches)- (2) 4 x 11.25
    Port Vel. (%)- 12.72
    -3dB (Hz)- 35
    Tune Frez. (Hz)- 29.84
    Sub Disp. (Cu. Ft.)- 0.7
    Port Disp. (Cu. Ft.)- 0.184
    Total Vol. (Cu. Ft.)- 4.5

    I was thinking about the box dimensions being 18"x28"x16". But, I have never built a box before and I am not sure how the ports would look. Could anyone help me on this, show me kind of what it should look like. I think I have the dimensions so that it would come out about 4.5 total cubic feet but I am kind of confused about what the ports should look like relative to the rest of the box. Any help would greatly be appreciated.

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    azbass is offline the salty mod

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    Re: Ported box for 1 15" Audiobahn Immortal Sub

    well your dimentions come out to 3.66 cu. ft. internal. go to
    for a box calculator.

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