I get where salteen is coming from - he's got a bunch of stuff that he hasn't had to sell an organ off to buy and wants to put it to use which is a fair call. Used or old doesn't mean crap. My SAS 10" tube that I've been using is 25 years old now and still has the ability to loosen your dental work lol. Add to that a Philips XP640 4 channel amp which is an ancient amp and an Alpine CD player that was given to me (which I'm contemplating ditching as the disc player is glitchy...) You can get pretty ordinary audio stuff to provide an acceptable sound but don't expect concert clarity. It's especially difficult to pull it off in a tiny truck cab. Set up your gear and experiment with it - speaker locations, balance and fade, audio settings etc til you get it to where you know it's limits. I thought having a 10 band graphic equaliser and a pair of carrozzeria box speakers running off a factory cassette deck sounded awesome in my first car - until I learned about amps, subs, crossovers and splits. But it was a place to start