Thanks guys for your valuable inputs. I will be trying the silicone treatment soon, but am quite worried about the potential damage it would cause to the plastic parts. Have any of you tried this and what type of silicone to use....acidic or non-acidic like for fish tanks??? I may try the sticky tape treatment first as this is definitely non-damaging. If this doesn't allow enough of the vibrations to be curbed, I will try the other way. Please let me know about the silicone to be used and whether anyone using this has got any damage to the plastic like warping and melting. I looked today for some replacement 2 or 3 way hifi speakers and don't know which will fit the W202 door and rear shelf. The diameter of the speaker and frame have to fit without any major alteration except drilling new holes. The rear door speakers look smaller than the 2 front ones. I cannot see the size of the rear shelf speakers. I also notice some coils or elect. condensors attached to cut down the high notes or low notes. What is the ohms of these speakers and their outputs? Will 2 or 3way speakers fit with those bigger magnets on the back and the higher fronts caused by the midrange and tweeter settings?