dealer invoice for center speaker repair on 2015 w212 E63 amg (part # 1728200702) under warranty. part can be bought from these MB Parts wholesales for $80 bucks
https://mbparts.mbusa.com/oem-parts/mercedes-benz-inst-panel-speaker-1728200702?c=bD0xJm49U2VhcmNoIFJlc3VsdHM%3D