Go the the link below and download a freeware program called WinISD. When you have installed it on your computer, open it, and click Help, then on "how to begin". WinISD will be useful to you in designing enclosures, and the help section provided a good explanation of T/S parameters and other factors that influence an enclosure's design. There is also a database of popular drivers, and if the one you are interested in isn't in the database there's an "own drivers" section where you can enter the parameters for these drivers.http://www.linearteam.dk/