Omage Granite GR305 Indoor/Outdoor Speakers for Sale. The Granite series is recognized for its outstanding performance and durability. It sports a sweet mica cone woofer with rubber edge for superior bass transients, while the oversize magnet controls woofer excursions and increases efficiency. A hard polymer dome tweeter (with neodymium magnet) offers crystal clear highs. Weather-resistant, UV protected and hermetically sealed cabinets with durable rust-proof aluminum grills. Gold plated five way binding posts and wall/ceiling mounting brackets included. Used, but in great condition. Below is info from the manufacture… The practical and versatile Granite Series can be enjoyed in both indoors and outdoors applications. The weather-resistant cabinets, made of glass-reinforced polypropylene, can easily be installed around the house and throughout the garden and can stand up to wind, rain, cold or heat. Can be wall or ceiling mounted using the supplied brackets. Ideal for use on terrasses, patios pathways, around the pool, on boats, in cars, etc. • Model: Granite GR305 • Type: 2-way Acoustic Suspension • Woofer: 4½ inch Mica Cone w/ rubber surrounds • Tweeter: ¾ inch Hard Polymer Dome • Suggested Amplifier: 40 Watts RMS • Frequency Response: 50Hz to 20kHz • Resistance: 4Ω to 8Ω • Sensitivity: 88dB (dB/2.83V,1m) • Weight: 5.3 lbs each • Dimensions: 7”d x 7”w x 9½” tall.