Rockford Fosgate M1D2-10B Color Optix 10" DVC 2-Ohm Marine Subwoofer - BlackRockford Fosgate M1D2 10B Color Optix 10" DVC 2 Ohm Marine Subwoofer Black This element ready sub also features switchable impedance with the VersaSwitch. The 2 position VersaSwitch lets you set up the sub for 1 ohm or 4 ohm impedance with a simple flip of the switch. The RGB LED lighting system to give you bright, colorful lighting that accents your boat's interior. specifications Details Peak 1200 watts RMS 300 watts Top mount depth 4. 23" Cutout