Niles RS series rock cabinet design is crafted to look like a real rock and features the use of integrated textured aluminum grilles. All RS series speakers are completely weatherproof. They employ double seals on the woofer, tweeter and bottom cover and are tested to exceed US Military specification 883 for Salt Fog, Operating Temperature, Storage Temperature, UV Exposure and Humidity. All RS series models feature tweeters mounted at 20-degree angles so that the high frequencies are aimed at