What Paramaters do I need to determin box size

jol50

Member
2007-11-08 2:14 am
Yeah winISD works great, just enter the T/S parameters. A good thing to do if you can is enter one you have listened to and look at the curve, that will give you a better idea of what it will sound like. You can drag the box size and see it change, or port size. Yes it is good idea to read up on that stuff some so you get a basic understanding of what the perimeters mean....some subs are better for small sealed and some ported/etc.
 

jol50

Member
2007-11-08 2:14 am
I should add to that, because you get cabin gain that makes more bass than your sub does. So the curve on that software will not show it, but it will play lower than the curve for open space predicts. Depends on the vehicle and install, but maybe roughly 20Hz lower. Also your crossover will cut it off where you set it, so at 50Hz it would be say -3db from the chart and lower yet as you go higher.

This link shows it, two lines are door speakers and woofer, but two are just woofer and then last one is woofer outside of car.
http://www.diysubwoofers.org/projects/other/cartf/