First off if it bothers you contact Revel or your dealer for a possible swap out.
Second Revel tests all their speakers to be within something like 0.5 Db of reference before they go out of the factory, so I think sonically you are pretty safe, if the visual aspect bothers you, contact them and discuss it. If on the other hand you bought them used, keep the grills on and don't fret.
Second Revel tests all their speakers to be within something like 0.5 Db of reference before they go out of the factory, so I think sonically you are pretty safe, if the visual aspect bothers you, contact them and discuss it. If on the other hand you bought them used, keep the grills on and don't fret.