Ok, at least I'm not the only one!!
The problem lies with the mesh- I'm thinking of cutting it out to see if it improves the sound. I can't believe you can buy a $100,000 car that has a useless sunroof....
2015 S550 Anthracite blue, Silk, loaded and doin just fine...
2013 SL63 AMG black....
2014 GL350 The kids chariot.
2012 750IL x drive, imperial blue/oyster, a finely loaded beater car... (gone)
2012 650 Cabriolet M sport (gone)