I'm having an intermitent problem with my setup (Alpine 12" w. coustic 400W amp). Its hard to decribe but I'll try my best...It seems as if the power output of my Sub fluctuates. sometimes when it hits a note it'll be really hard and others it will be soft for the same notes, but it seems to be random...this only started a few days ago and I've had the setup for at least a few weeks in my new car.
I'm using 4GA wire for PWR and GND and I'm grounding at a large bolt that goes through the floor of the hatch. Just to be safe I cleanned the bolt and the hole off as best I could. Could this be a Grounding problem ? Has anybody ever heard of these symptoms? what else could it be? thanks.