TS-MR1640 16cm 2-Way Marine Speakers (160W) Features: 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 surround that resists colour fading or running. An Acrylonitrile-Elastomer Styrene (AES) Glass Fibre Reinforced Basket protects the magnetic circuit. The speakers also sport the pure white AES grilles to keep the pure white colour on a long term which resist s fading and yellowing caused by direct sunlight and heat. And finally, gold tinsel wire and gold plated wire terminals are used to prevent any corrosion and possible interference in audio signal transfer caused by corrosion . Specifications: Impedance 4 Ω Frequency response 30 - 30,000 Maximum power 160 Nominal input power 30 W Sensitivity 91 dB Woofer material Water-resistant White IMPP Composite Cone Tweeter size 30 mm Tweeter material Balanced Dome Tweeter Woofer Size 16 cm 2-Way Component Yes