I love the fact you have the balls to give it a go and who knows if you do enough research you WILL be successful, after a few prototypes of course. Dont get disheartened by any comments on here, but take constructive criticism.
It'll be an amazing learning curve for you, i would be very interested for you to post up progress of your project(s) .
Everyday is a school day!! Go for it.
EDIT: Just to add, most of the best made speakers (certainly for home cinema) are hand made!! Naim & BK are brands that instantly spring to mind.
The Difference between Genius and insanity??............. Is the measure of success!