tweeters? what kind of amp/ installation

[mylows10 5,000+ posts]

He's looking for a 4 channel on that budget as well. OP said around $220 for comps and 4 channel.

might be able with the powerbass asa line ,should bump your budget up a bit tho if you want better.

 

[mlstrass 5,000+ posts]

adding another set of tweeters will NOT make you louder, just an FYI...