I need an audio amplifying circuit diagram that is simple and cheap and that will be able to be controlled?

i am building a speaker and i found out that when i build that speaker it will not give off sond very loud so i needed an amplifyer so i went on the internet to try an find a diagram and i found a few simple cheap ones but for all the info it was un listed so i need help with this





and plus i need the circuit to be able to be controlled and by that i mean by like a volume controll so when i test it i won't go deaf


well i need a link to a site or picture or if you can cook something up in paint then host it on imageshack.usI need an audio amplifying circuit diagram that is simple and cheap and that will be able to be controlled?
Here's a whole bunch of 'em. . .I need an audio amplifying circuit diagram that is simple and cheap and that will be able to be controlled?
You can try using


www.williamson-labs.com and


www.howstuffworks.com