View Full Version : building a areo port box but need help
06-28-2006, 05:13 PM
Ok I am building a new box with a single 6" areo port.
The sub is a 12" mt.
The box will be 3 cubes after sub and port displacement.
Now the port has to be 17.35" correct? It will be tuned to 35hz.
Now I can not figure out how to find out what the displacement of the 6"areo that is 17.35" long.
Can someone please help me out here.?
Is there a online calculator?
Thanks in advance.
06-28-2006, 05:16 PM
www.psp-inc.com they don't sell the 6in ports, but you can use the calculator
edit, i didn't read the post right... are you just asking the displacement of the port? pi*r^2 times the length should do it.
06-28-2006, 05:37 PM
ya that is the calculator I used.
06-28-2006, 05:54 PM
I **** at math lol well I will see if i can figure it out.
Ok is this right
6" aero x 17.35" long = displacement of 0.28 cubic feet.
If not I will try again.
06-28-2006, 07:32 PM
= 490.56 in^3 / 1728 [in^3/ft^3]
= 0.284 ft^3
Look right to me!
06-28-2006, 09:02 PM
06-28-2006, 10:03 PM
thats what i said to do :P
07-05-2006, 12:17 PM
umm. isnt radius, half the diameter? meaning on a 6" diameter aero port...the radius would be 3"...
07-05-2006, 12:25 PM
yeah just use the (pi R^2) x L formula to find the volume of the port. don't wory about the little extra due to the flared ends...won't account for much worth figuring.