pulled the passenger side front mid range speaker today, the buzzing
There are 11 clips holding the door panel on. What the Bentley service
manual doesn't tell you is, next to the airbag, is a small (< 1 inch)
panel with "AIRBAG" written on it. This is actually a screw cover;
behind it is a fourth Torx screw.
FYI the part no. of the speaker is 65.13 - 8 366 466, spec 20W 3ohm.
diameter is 2.5" (inches). couldn't find a direct replacement from any
local car audio places.
The speaker comes out of its plastic housing pretty easy, with a small
screwdriver and some care. The foam cone material was cracked all round
the outer edge, so I spread a little clear silicone all round the
crack, let it set 30 minutes, and bingo, no more buzzing. Sounds good,
I hope it lasts.