I have the usual speaker covers on my JBL center and fronts and surrounds. However, in all the pics I see in the gallery section, no one has them on. Do most people just leave them on? Or do most just take them off for the pictures to show off their drivers? I never thought of removing them permanently and was wondering if there is any difference. I can notice a SLIGHT difference in the highs coming out of the tweeter if I have 1 front with it on and 1 without, but that's it. Also, if i take it off, won't dust, or something else, on the drivers become a problem? I know that they protect the drivers from becoming damaged, but I never thought of this idea until recently. Any help on this would be awesome. Thanks.