[Spillages]

I am in the Boy Scouts and am starting on a new badge. I was browsing through random things to build on the internet and ran across http://wheely.cat.org.au/ and decided I was going to do the same but try to fit in a much smaller space, my backpack. So I started my search to build my own amp to power this system I was about to build and came across http://tangentsoft.net/audio/cmoy-tutorial/. It is a good idea to get started with but I started reading and it looks like it is just for headphones and I want something much louder and powerful enough to power a 12" subwoofer. Hopefully someone here could help me out a bit with this problem.

 

[tangent]

The power-amp equivalent of the CMoy is called a chip-amp. There are a number of different kinds: Gainclones, Tripath chip-amps, etc. diyaudio.com is the best place to take this up.