A new problem has risen with my 2003 E85. When I start the car there is loud crackling and popping coming from the rear speakers. It occurs even when the radio is off. NO button pushing seems to affect it. After about it minute it slowly starts to fade and eventually goes away. The Radio and speakers seems to be unaffected and continues to sound normal otherwise. I have the Carver amp and 10 speaker set up in the car. This only started to happen when the weather got cold. After the crackling and popping goes away I can turn the car off and turn back on a short time later and there is no crackling. If I let it set for a while it comes back. I see no evidence of damage or moisture near the amp. Is my amp going bad? Does it need to warm up? Anyone else had a similar situation?