I have a 06 Mazda 3s and my right door panel or speaker rattles when the music is on. I only listen to it at around 11 volume setting with bass at +3. I went to Tustin Mazda dealer and they said it is normal for a speaker with this good of a bass. THAT IS BS! It isn't even that good. They said if they want to try to fix it they have call Mazda up and ask them. They said it would take a few days to fix it if Mazda says it is an issue. They have to order the parts and then they say they are very busy with other cars. I can't do this because I need a car. My sister works for Mazda corporate in Irvine so I ask her today if she can do anything for me. I hope Mazda will fix it because it is really annoying. My question is does any other Mazda3 owners have this problem?