Ok i am wrighting a pice of software that i will be giving away free. But i need the forumla so when thay input the H - W - T- D ( highth with tall depth ) and the type box it is thay want to make such as seald ported or fiberclass it then will calculate all the input info and give the best size box to make and the max db it will give out.

So if any body can give me the formula to the db? much thanks. if you dont understand what im trying to explain send me a pm