Pioneer TS-MR1640 Speakers 6.5" 16cm 2 Way Marine Boat Coaxial System 30w RMSTS MR1640 16cm 2 Way Marine Speakers (160W) Marine audio at its best. With heavy duty construction that strenuously resists water, corrosion and heat, these marine speakers are designed to deliver a consistently dynamic sound outdoors and on the water . Featuring a water resistant IMPP Composite Cone, the speaker produces outstanding mid bass response and resists the effects of salt water, humidity and extreme heat. Each speaker utilizes an elastomer