Niles RS8SI Granite (Ea) (FG01030) 8 inch 2-Way Stereo Input Rock Speaker All RS series speakers are completely weatherproof All RS series models feature tweeters mounted at 20-degree angles so that the high frequencies are aimed at the listener, not the ground. RS series cabinets are carefully crafted from 4 inter-woven layers of fiberglass and resin All RS series speakers utilize a unique Cone Forward(TM) Design