JL Audio built their MX770-ETXv3 tower speakers to blast through the noise and deliver quality sound while you're tearing along your favorite stretch of water. Whether you're out for a day of water skiing or rolling along the river on the way to a fishing spot, you'll definitely hear your music over the roar of the engine. Specially tuned for maximum performance, these sleek, sharp-looking 7.7" speakers use marine-grade stainless steel, synthetic fibers, and UV-resistant polymer baskets to protect their inner workings against humidity and salt. The titanium-finish grilles look terrific, of course, but they're also durable enough to survive in harsh marine environments.