Stadium Marine MW1000-10" (250mm) Woofer w/SSI RGB Lighting, 300 watts RMS, 900 watts Peak, Sensitivity: 89dB at 2.83 Volts. Frequency Response: 20 2KHz, 2 and 4-ohms, Switch Selectable (SSI)

Plus One Woofer Cones: These cones offer more overall speaker-cone area than others in their class, leading to higher sensitivity, increased low-frequency output, and a more distinguished musical character. SSI (Switch-Selectable Impedance): This 10-inch (250mm) marine woofer includes an exclusive dual impedance switch, enabling you to select either a 2- or 4-ohm load impedance option. Reconfigure your system with the flip of a switch. Perimeter Illumination: Unique and eye-catching RGB illumination can show seven colors out of the box, or an almost unlimited number of colors when connected to an external lighting controller. One-piece Polymer Basket: The polymer basket is durable over time, even after extended exposure to sun, salt, and moisture. Rubber surrounds are more dependable than foam and provide better edge protection. High Sensitivity: A high sensitivity rating combined with above-average continuous power handling makes this one of the loudest marine speakers available, without compromising clarity, fullness, and musical character