I've got a strange problem with my car stereo. It consists of an aftermarket head unit, and a 10" sub in the trunk, and 4 - 6.5" factory speakers. I started to notice a crackling as though I had a speaker blown. After troubleshooting, playing with both balance and fade settings, I came across something unexpected:
When the front driver-side speaker was in use, ALL of the speakers crackled loudly. But if I faded it to the back or right they all sounded fine. I took the panel off, and discovered the speaker was badly blown, so I ordered a new pair and disconnected that speaker for the time being.
Then today on the way to work all the speakers made an awful loud sound. I thought for a moment there may be an elephant trying to escape my trunk. I turned it down, then back up. And discovered later that the crackling had returned, only this time it is the REAR PASSENGER speaker that is the culprit, and it doesn't appear to be blown. So now I'm down to one speaker (Driver side rear). If I fade/balance just to that one it sounds good. If I involve the Passenger side rear, all (connected) speakers sound bad.
Just curious about whether I have a blown head unit or what. I don't want to buy a new one if I don't have to. Thanks in advance.