how to

[twisted_clown02 10+ year member]

how do u tune a ported speaker box

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[req 5,000+ posts]

with math.

try this - i wrote it.

http://www.r3q.net/port.html

the link to the port calculator that you will need is here (i need to edit the HTML at home)

http://www.r3q.net/req_files/portcalc.zip

good luck.