Excellent speaker calculator with large driver database

[G.Axiom]

http://www.linearteam.dk/default.aspx?pageid=winisd

"WinISD
Is freeware speaker designing software for Windows 9x/NT environment. You can design Closed, Vented and Bandpass boxes with this program. It also allows you to calculate few different types of filters.

NOTE! WinISD is still in betaversion, so please be patient with errors that may occur. Most helpfull would be if you would report them to Juha Hartikainen."