View Full Version : WinISD calculations

01-21-2004, 05:41 PM
Ok, I have both versions of WinISD. The pro alpha, and the beta. Now, the same subs, same specs, same volume, same port size and length, but I get two different frequencies?!??! The box is 4.6843 cu ft, two ports, 14.5"x1.5" and a length of 20.35" each. In WinISD pro, it says that this is tuned to 31.45Hz. On WinISD beta it says this is 30.6Hz. Which is right?!? Is this a good tuning range? I listen to all hiphop/rap. Should I go lower? I am using two Fosgate PunchDVC RFP1212 subs.

01-21-2004, 07:44 PM
Here is a pic of my idea.

01-21-2004, 07:47 PM
Sorry, I was wrong. Its 32.09Hz on the Pro, and 30.6 on the beta version. Now thats a pretty big difference. See the box pic, and see what you come up with for Hz. Thanks.