The Earthquake Sound Granite-52 outdoor speakers and Granite-10 subwoofer – part of the ROCK-ON outdoor speaker series- are specifically designed to imitate a rock appearance and easily blend in with any outdoor environment. Made with UV-treated, weather-resistant enclosure materials and durable epoxy resin construction, the ROCK-ON series Granite-52 speakers can withstand the demanding outdoor elements. The Granite-52 is a pair of rock speakers with a 5.25-inch woofer and a 0.5-inch tweeter. They serve as your left and right channels, have an amazing frequency response that is unmatched by any other rock speaker, and produce high-quality and accurate sound. The ROCK-ON Granite-10 subwoofer features a high-power crossover that reduces distortion and delivers pure sound. Also, Granite-10’s port is “S” shaped, so water cannot get trapped inside. The Granite-10 brings bass to your outdoor space, something that is greatly needed in today’s rock speaker market. Combined with the Granite-52 speakers, which have a matching finish, you can turn any backyard into an entertainment center.