View Full Version : Port Length Calculator question....

07-09-2009, 12:41 PM
I'm trying to calculate my port length need for my box....

When I use the port length calculator, I am entering that I need two 4" ports, in a 2.4ft3 box tuned to like 35 Hz, and it tells me I need a port length of 20.11".....

Do they mean I need two 4" ports that are 20.11" EACH or two 4" ports that total a length of 20.11" (10.55" each)?????

07-09-2009, 12:42 PM
20.11" each

07-09-2009, 01:47 PM
you are gonna have to tune that box higher like 48- 50 hz or build it with 1/2 internal 1/2 external ports