Paolo Sopranis—metal v. celluloid grille?

Paolo Sopranis—metal v. celluloid grille?

Hey all!

When taking the grille off my red Paolo, I’m struck by the difference in clarity of sound. One thing I have noticed, however, is that the grille is covered in a thick layer of celluloid. The grey boxes have a somewhat louder, crisper, and more brassy sound. While that has to do considerably with the reeds and construction of the accordion, I was wondering if anyone thinks it has anything to do with the metal grille, or has noticed a difference in sound with different grilles on the box.