I installed a set of Image Dynamics 6.5 component sets in the front doors amped. Stick some Dynomat (or cheaper equivalent) on the door skin to stop vibrations. Seal the door with Dynomat to block sound reflections from the backside of the speaker. Mass loaded vinyl to absorb outside noise. Let it hang. Mount at top. Remove the cheap plastic midbass speaker mounts and make a set out of mdf. Mount the 6.5 and tweeters in the panel. Ran the wiring to the crossovers under the dash then to the amp in the trunk. Took a day but they sound fantastic! Looks stock with the door panel back on. Only differences are the tweeter is black instead of the grey metal mesh cover. Amp is mounted on the underside of the deck.
http://www.amazon.com/gp/product/B00...=sr_1_1&sr=8-1
Most components need an amp to reach their potential. Running off a headunit just encourages clipping the signal and distortion. Not enough power from the headunit so you crank it up til the point of clipping, hurting the speakers.
