Pioneer TS-MR2040 Marine 8-Inch 200-Watt Coaxial Speakers Water-resistant white IMPP composite woofer Poly Imide reflex horn tweeter Strenuously resists water, corrosion, and heat Eight-inch coaxial speakers with 200 watts maximum power handling (40 watts nominal) Water-resistant white IMPP composite woofer Poly Imide reflex horn tweeter Strenuously resists water, corrosion, and heat 25 Hz to 30 kHz frequency response; 92 dB sensitivity