The large speaker in the driver's door on my 2003 D2 has stopped working. There is no power getting to the speaker - will check the back of the stereo but do I have to fiddle about with the amp under the passenger's seat? All of the other speakers, big and small, work fine and have connected the passenger door large speaker to the driver's side to check it is the lack of power that is the problem. Any suggestions gratefully received!