GeoRealistic(TM) Styling Traditionally, rock speakers have looked like ornaments and not like rocks. Each RS5 style has unique textures and colors that are fashioned after natural rocks. Shaped grilles match the features on the front of the rock, making them blend into the cabinet. All of this extra attention to detail leads to a GeoRealistic(TM) style that enables the RS5 to blend in with other landscaping and disappear. All that will be noticed is the great sound not the loudspeaker. Weather Proof Construction The cabinet is made from fiberglass, it utilizes double seals on the tweeter, woofer and enclosure cover, the woofer drains water away from it, the grilles are painted aluminum and the drivers are made from weather resistant materials. The RS5 has passed the most stringent environmental tests devised. Surviving over 5 years worth of temperature cycling and still having seals that pass a 24-hour submersion test. It has passed the test requirements for Salt Fog, Operating Temperature, Storage Temperature, UV Exposure and Humidity per military standard 883. Whether you are considered about salt-air, rain, freezing rain, snow, extreme temperatures, high humidity, direct sunlight or combinations of these conditions, the RS5 has proven itself to withstand the harshest conditions Mother Nature can throw at it. 5-1/4 inch Talc Filled Polypropylene Woofer The unusually stiff talc filled polypropylene cone, the butyl rubber surround, and the substantial magnet and motor structure are optimized for large excursions of the woofer. In this way, the 5-1/4 inch woofer can create outstanding bass output. In the end, the woofer design provides deep rich bass and outstanding weather resistance capabilities. 1/2-inch Kaladex(TM) Tweeter The RS5"s 1/2 inch Kaladex(TM) tweeter employs DuPont"s latest material technology to produce a dome tweeter with exceptional frequency response and low distortion