We are a Rockford Fosgate authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!
The Rockford Fosgate M1D4-8 is made for environments where normal subs just do not survive. It is tested using ASTM B117 salt fog and ASTM G154 UV exposure standards, so it is built to resist corrosion, moisture, and constant sun exposure without losing performance. Whether it is installed on a boat or an open-air marine setup, this subwoofer is designed to stay reliable and keep delivering clean bass in tough conditions.
Do not let the size fool you, this sub is built to perform. The adjustable dual impedance operation lets you switch between 2 ohms and 8 ohms by rewiring the dual 4 ohm voice coils in series or parallel, giving you system flexibility without hassle. Even with that control, it still delivers solid output at 150W RMS and 600W peak power, making it a great match for compact but capable marine audio systems. It also supports sealed, ported, and infinite-baffle setups, so you can tune it exactly how you want.
The M1D4-8 is not just about durability, it is built for performance and visual appeal too. The integrated RGB lighting behind the grille lets you customize colors like aqua, pink, yellow, or white, while the waterproof Deutsch connector keeps everything sealed and reliable in wet environments. VAST technology increases cone efficiency for stronger bass in a compact design, and Klippel Verified engineering keeps distortion low while improving clarity. With stainless steel corrosion-resistant hardware and flexible wiring options, this subwoofer brings together clean installation, strong bass, and long-term marine reliability in one package.
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We are a Rockford Fosgate authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!
The Rockford Fosgate M1D4-8 is made for environments where normal subs just do not survive. It is tested using ASTM B117 salt fog and ASTM G154 UV exposure standards, so it is built to resist corrosion, moisture, and constant sun exposure without losing performance. Whether it is installed on a boat or an open-air marine setup, this subwoofer is designed to stay reliable and keep delivering clean bass in tough conditions.
Do not let the size fool you, this sub is built to perform. The adjustable dual impedance operation lets you switch between 2 ohms and 8 ohms by rewiring the dual 4 ohm voice coils in series or parallel, giving you system flexibility without hassle. Even with that control, it still delivers solid output at 150W RMS and 600W peak power, making it a great match for compact but capable marine audio systems. It also supports sealed, ported, and infinite-baffle setups, so you can tune it exactly how you want.
The M1D4-8 is not just about durability, it is built for performance and visual appeal too. The integrated RGB lighting behind the grille lets you customize colors like aqua, pink, yellow, or white, while the waterproof Deutsch connector keeps everything sealed and reliable in wet environments. VAST technology increases cone efficiency for stronger bass in a compact design, and Klippel Verified engineering keeps distortion low while improving clarity. With stainless steel corrosion-resistant hardware and flexible wiring options, this subwoofer brings together clean installation, strong bass, and long-term marine reliability in one package.
