I have an alpine headunit with max vol at 35 with a 4ch 600w xplode amp running to my door speakers and had the volume up to 23-24 and it had barely any noticeable distortion before.
I had pyle of junk 6.5 in the front doors and infinty 5.25 in the rear. I smelled an electronic smell in the rear on the drivers side i have both amps and a cap on that side of the car.
I noticed i would get a bad signal type sound out of the car system like as if the radio station wasnt coming in maybe going in and out. So i listened in the back and notice the drivers side rear was out so i touched a wire connection moved it alil and it kicked back on.
So i figured ok its working now i turn up the radio and noticed the volume get lower in the back then back to normal. So i twist on the connection and tighten it up turn the radio back up for a couple songs and notice that elec smell I figured maybe the old 80s woofer i had was burning out so i check it and smell nothing really smelled near it while turned up.
Next thing you know im looking at the rear drivers side speaker and i noticed its flexing pretty violently compared to the other speaker I guess those infinitys couldent take the 45w rms they were rated for for too long besides i had gotten them out of a junkyard jeep for free.
So i figured the voice coil was heating up in the speaker and thats what that smell must have been.
I now have these kicker 6x9 installed and it dont seem like there that loud and they distort. Now my headunit will only go up to 18 and it starts to sound really crappy??? the kicker are rated for 70w rms. Also the sony amp is hooked up threw high level inputs