Hi All strange problem with the speakers. have read threads on here that deal with some issues and solutions, but not the exact problem speakers on passenger side are crap, very low volume, muffled and crackly. this is everything passenger side, all drivers side are OK. stuck another speaker on front door, but the issue is the same. fitted a parrot phone kit yesterday, checked radio connections, and all seems OK. any ideas? car is now lovely apart from this issue.