So... I've been shopping around for a bass cab as of late and I noticed that all of them have a metal grill.... why?? Does the metal grill help/enhance the sound somehow? Is it better to have a metal one vs. a cloth grill? I'd realli like to know because if its just cosmetic i'll just swap it out for a cloth one. (I personally don't care much for the metal grill ) any input would be helpful...thanx!