the speakers need to be replaced so the guy's just going to let me have it. thinking about popping in some neos... what should I look for as far as construction and all that? any warning signs besides rot and the normal stuff i should be aware of? as far as speakers, I'm thinking kappalites or similiar... any good cheap sets of speakers I should know about? looking for a 4 ohm cab, around 500 watts of handling.