Tim said:
LM324N
http://www.ortodoxism.ro/datasheets/stmicroelectronics/2156.pdf
can i make a four channel audio amp with this chip?
Yes.
left tweeter / right tweeter / left woofer / right woofer.
It may not be loud enough for your taste. I mean, you even provided a
datasheet; why don't you read it and do some math to determine the available
output power?
This would be my first electronics project but i have a scope and want
to learn.
It would be better if you had a book rather than the scope. Get a hobby
electronics book or magazine with some example circuits and build a dozen of
those. Then modify the circuits to fit your needs. Finally, start designing
on your own. That's what got most of us started here.
Of course the 'Net is full of hobby stuff as well, but it often takes some
experience to judge if something is hard or easy to build, or if it is
downright bogus. Printed publications specifically geared at the hobbyist
are better in that regards. Elektor used to have those "300+ circuits"
books, maybe they're still available.
robert