I am making a 2ft^3 box with a 2.5x12.5 port 13.5 inches long what frequence is that?
I am making a 2ft^3 box with a 2.5x12.5 port 13.5 inches long what frequence is that?
Alpine CDA-9813
Infinity Kappa 60.5s Component Speakers
U.S. Acoutics 2080x for the comps (80x2 @ 4 ohms)
1 ed e12O.44 in a 2ft.^3 sealed box.
Soundstream RUB500-1 for the sub (400x1 @ 2 ohms)
Based on my findings on WinISD pro usng a single shiva 2...
roughly 48Hz... SPL number, I'd imagine.
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Seas 27TDF/C, RE XXX 6.5, custom xo (dyn 240GT sitting idle)
RF 60.2 amp
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Soundstream picasso 1400.1D
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nice that is what I am building for my kicker comp subs. How could I lower it down to 33 hz?
Alpine CDA-9813
Infinity Kappa 60.5s Component Speakers
U.S. Acoutics 2080x for the comps (80x2 @ 4 ohms)
1 ed e12O.44 in a 2ft.^3 sealed box.
Soundstream RUB500-1 for the sub (400x1 @ 2 ohms)
make the port longer.
it would have to be 33.89 inches long. And is that volume with the displacement of the sub(s)
I am confused becuase I went to http://jlaudio.com/tutorials/ports/index.html and got 34.3 as my port frequency so is this right or not?
Last edited by ws140; 04-24-2003 at 02:40 PM.
Alpine CDA-9813
Infinity Kappa 60.5s Component Speakers
U.S. Acoutics 2080x for the comps (80x2 @ 4 ohms)
1 ed e12O.44 in a 2ft.^3 sealed box.
Soundstream RUB500-1 for the sub (400x1 @ 2 ohms)
well according to my winisd program it would be tuned to 48 hz.Originally posted by ws140
I am confused becuase I went to http://jlaudio.com/tutorials/ports/index.html and got 34.3 as my port frequency so is this right or not?
First of all, that box is too small for them, you are looking at around probably 1.3 cubes after displacements, and this is for 2 Comp's, right?
You need to go bigger, at least 3 cubes. If you want to stick with that size, though, you can make the port smaller, for example- make the port 2"x6"x12", that will achieve a tuning of 33 hz with 2 cubes.
dude it is 2ft^3 for each sub after displacement. so that port is 2x6 by 12 inches long right?
Alpine CDA-9813
Infinity Kappa 60.5s Component Speakers
U.S. Acoutics 2080x for the comps (80x2 @ 4 ohms)
1 ed e12O.44 in a 2ft.^3 sealed box.
Soundstream RUB500-1 for the sub (400x1 @ 2 ohms)
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