yeah, the hybrid audio stuff is amazing. On point of sq lol. But if your looking for output from aftermarket speakers you really need some clean power, not a small 20 ish watts from your head unit, but a good clean 50+ watts of rms from a 4 ch... I like the Lanzar Opti6C component set as a front stage. great low end power for a 6.5 inch woofer. and clean mid and upper tweeter range as well. And for 130 shipped its hard to beat. and for some rear fill... just about anything really. but off the stock head unit, or an aftermarket headunit alike, your only going to get so much with out amplifying the other speakers.

Another good company is Vibe audio. *(not lanzar vibe) they are making some really nice products. they make a 250 Ish dollar 3 way component setup that is CLEAN and very loud!