help with Box design

[Upstage Audio 0]

what is the length or volume of a vent in a 2cu ft ported box tuned to 28hz supposed to be? I am trying to figure out a way for my sealed box to have the ability to add on a vent to turn it into a vented box. Suggestions.

[Acidburn 10]

length depends how big(cross-sectional area) the port is

[80INCHES 0]

what sub is going in this box

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[Acidburn 10]

what sub is going in this box

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im guessing a 12" Mag

[80INCHES 0]

for u get a mag 12 in a 2cube box tuned at 28hz

u will have to make the box interally bigger so the displacement of the port and sub will be 2 cubes

heres a pic of what u need 2 do to make the port long enough so it will be 28hz in a 2cube box with the mag12 in it

u will have to make 2 bends..i made the box 29widex13highx13deep and the port is 11.5highx2inches wide(23square inches in port area).. 34deep

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the box is alittle over 2cubes...2.17 to be exact

[Tirefryr 1,742]

Might want a little more port area. Might.

[80INCHES 0]

if he mad his por 3inches wide his port will have to be 50inches long...at that point instead of making a L-shape port he would have to make colums

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