Marine-grade 25 cm / 10 inch subwoofer from the ME series. (900 W)ME Series marine-grade entertainment combines Pioneer sound quality with all-weather durabilityPioneer's ME Series marine-grade subwoofers are protected from the effects of sun and water, complying with both IPX7 and ASTM D4329 to ensure reliable performance in all weather conditions.Featuring a mica-reinforced IMPP(TM) monocoque cone and butyl rubber enclosure, the subwoofers are manufactured using advanced in-mould joining techniques, giving them superior waterproofing while delivering high-quality, high-performance sound.Internally, a symmetrical motor design combined with a high-strength suspension optimises stability and linearity, ensuring clear sound reproduction with little distortion.IPX7 (N)This Pioneer product is IPX7 rated. This means that, when properly installed, this product is splash-proof and water-resistant to a submersion depth of up to 1 metre for up to 30 minutes.Features: -IPX7 (N): -Size: 25 cm / 10" -Type: Free-Air -Maximum input power: 900 W -Continuous output power (RMS): 300 W -Frequency response: 20 Hz to 3.5 kHz -Sensitivity: 84 dB (1 W/1 m) dB -Impedance: 4 Ω -Installation depth: 126 mm -Woofer cut-out hole diameter: 225 mm -Subwoofer material: PP -Surround: Trex level -Voice coil type: copper -Voice coil type: polyimide film -Connectors: Connectors -Magnets: Ferrite -25cm / 10" -Speaker Grill: White or Black included.