I'm thinking of buying a bass amp that's been used by a DJ as a mircophone and music PA. Does this amp's past mean it might sound bad? Have a damaged speaker? Will it be any problem for me?
I doubt that it would have been damaged, unless he's cranked it up way to much.

What amp is it?
Nope, no sig here.
Try it first to make sure it is OK, but having used it as a PA amplifier shouldn't have had any detrimental effects on it.
It should be okay, just make sure it's been treated well. Putting vocals through it shouldn't affect it.
Quote by JagerSlushy

Black people play bass.
Quote by isabiggles
Nevermind, that's a stupid pun for Australian pyromaniacs.
Just forget I said anything.

Quote by mac_attack
And stuff...

On playing bass.
Behringer BRX1800H
Acoustic B115
Asher Custom 2x10