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bopo668
12-02-2007, 12:39 PM
Ok iv built a box and it is 4.427^3ft including sub displacement. i want to tune it to 32hz can anyone do the math for me i want to use two 4" aeros to . idk how also 28hz 35hz i want to play around and see witch is better for daily

duece212
12-02-2007, 12:41 PM
http://www.psp-inc.com/psp-inc.com/cgi-bin/port_length_calculator.cgi

AudioXtremes
12-02-2007, 12:48 PM
That calculator only works if you know how much airspace is left after port displacement. I don't think it subtracts port displacement for you.

bopo668
12-02-2007, 12:51 PM
the calc only tells you what it is for that volume. would i subtract the volume of the two cylinders then do the calc again