View Full Version : design help

10-12-2012, 10:41 PM
building a box for a friend its gonna be 1 alpine type s 12" sub alpine calls for 1.55 optimum ported so the box is gonna be 14"x14"x20" which roughly is 1.86 cubes now my calculation is that with 2 2" areo ports to tune to 32hz they are both gonna need to be 8.4" long my question will that be enough port area?

10-12-2012, 10:47 PM
Might need more port area....

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10-12-2012, 10:48 PM
Why not just use one 4"?

10-12-2012, 10:49 PM
thank for the advise how much port area would you suggest

---------- Post added at 09:49 PM ---------- Previous post was at 09:48 PM ----------

my friend wanted 2 so figured id make it to his liking

10-16-2012, 02:31 PM
A single 3 would be fine for that sub so I would assume 2 2"s would probably be okay. do you think you could try 2 3"s and just lengthen them to where it is tuned correctly?