lol i waswondering if i would be waisting my time, and money, if i bought a rampage 500w amplifyer.

i dont want to spend allot of money but but i definatly dont was an amp that sounds like dookie...

well the only use for it would be to bridge it to my current sony 250w, and wire it to my 2 rear 12'n pioneers...
the 6x9's are doin fine, but the rear subs stop getting louder at a certain soundlevel, and the 6x9's, and 4x6's can get louder...

i dont know much about amps, and subs, other than basics
but before i even consider buyin an amp, is it my subs, or not enought power to them thats causing them to "stop " getting louder at a certain volume?