is it really this simple?

http://www.ehow.com/how_8000453_repl...r-audi-s5.html

I have a blown Sub I suspect, Audi have quoted £50 for a new one (reasonable) and £200 to fit it (not so reasonable!)

if it is just a case of unscrewing and undoing the power lead I'll do it myself, can anyone confirm?

thanks