BOSE Speaker Vibration Parcel Shelf

[Glync]

Hi chaps old thread but I have noticed the same on mine, Bose system vibration on the rear shelf didn't have this in the d3 you could wind that up full and nothing rattled!

I sat in the back today and placed my hand on the shelf when it occurs and it stopped so I guess it's the shelf not the speakers. Certain frequencies seem to set it off on certain tunes. Did anyone get this fixed before I tackle the local Audi boys? I looked underneath but it's all covered so needs striping to get assess.
Also noticed there's a movement in the drivers seat ....like the seat is slightly loose on its fixings. I have read on another form this is a fairly simple if involving a fibre washer .... Again anyone noticed this ?
Other than that the car is faultless and a really nice bit of kit, mpg is astonishing for such a large motor and so quiet and comfortable. I have had to to set the speed alert
Cheers Glyn