I have just purchased a 2002 CL55 AMG and have an annoying intermittent crackling from the front centre speaker, even when radio etc is turned off. It sounds occasionaly like frying sausages, other times just crackles and pops. I have trawled through the topics on the forum and have noticed similar problems posted but through different speakers, but no hard & fast answers. Has anybody anybody a similar problem and have found an answer, it's driving me round the bend!!