Trixter
10+ year member
Keepin it Simple
I have used WinISD to do most of my box building. I have heard that it is not that accurate and to try using this:
http://www.loudspeakers101.com/VentCal1.htm
Between loudspeakers101 and WInISD the numbers are pretty different. Another thing I don't understand about the loudspeakers101 calculator, is the slot and square option. I know the difference. But look at the JL web site. (http://www.loudspeakers101.com/VentCal1.htm) It says to add 1/2 the port's width to it's length for the correction factor and loudspeaker101's calculator subtracts 1/2 of the port's width from it's length when the slot option is selected.
So, between these three resources, who is correct?? Am I better off to stop using calculators and go back to using the the formula, pencil, and paper??
http://www.loudspeakers101.com/VentCal1.htm
Between loudspeakers101 and WInISD the numbers are pretty different. Another thing I don't understand about the loudspeakers101 calculator, is the slot and square option. I know the difference. But look at the JL web site. (http://www.loudspeakers101.com/VentCal1.htm) It says to add 1/2 the port's width to it's length for the correction factor and loudspeaker101's calculator subtracts 1/2 of the port's width from it's length when the slot option is selected.
So, between these three resources, who is correct?? Am I better off to stop using calculators and go back to using the the formula, pencil, and paper??