The M1D4-8B Color Optix 8” DVC 4-Ohm marine subwoofer delivers loud, clear, accurate bass, and lights the way for your journey! The M1D4-8B marine subwoofer has a power handling of 150 Watts RMS / 600 Watts Peak and connects with the Rockford Fosgate Color Optix Controller and RF Connect App (PMX-RGB sold separately), allowing you to customize your own color patterns To compliment the plug and play connectivity and streamline installation, M1 subwoofers are equipped with a VersaSwitch to make changing impedance between 2 and 8 ohms as easy as flipping a switch The Element Ready design and IP67 certification makes them truly purpose-built for marine applications where protection from damaging UV rays and water spray is essential Famous Rockford Fosgate build quality with a full 2-year warranty The M1D4-8B Color Optix 8” DVC 4-Ohm subwoofers deliver loud, clear, accurate bass, and light the way for your journey! The subwoofers connect with the Rockford Fosgate Color Optix Controller and RF Connect App, allowing you to customize your own color patterns. The Element Ready design and IP67 certification makes them truly purpose-built for marine or motorsport applications where protection from damaging UV rays and water spray is essential.