I bought a used Peavey Bandit 75 yesterday from someone in the wantads(~$100). The only thing he claimed to have was an acoustic guitar ( i didn't have my guitar with me). It didn't sound perfect, but I was assuming it was the acoustic.
Anyway, I get it home and plug it in and notice a little distortion on the clean channel. It seems to have plenty of power but just didn't sound quite right. I took the grill off and pushed lightly on the cone and noticed that it scrapes something inside.
I know, I screwed up.

So now I need to replace the speaker. What should I look for?