Description
Rockford Fosgate 12″ Color Optix Marine Subwoofer 4 Ohm – Black – M1D4-12B
Overview: The Rockford Fosgate M1D4-12B is a high-output 12-inch marine subwoofer designed to deliver powerful, deep bass while adding customizable Color Optix RGB lighting to your boat. Built with marine-grade materials and rugged construction, this subwoofer is engineered to perform reliably in wet, high-vibration environments while enhancing both sound and visual impact.
- 12-inch subwoofer design: Produces deep, impactful low-frequency performance.
- 4-ohm voice coil: Designed for flexible amplifier pairing in marine systems.
- Integrated Color Optix RGB lighting: Customizable lighting enhances onboard style.
- Marine-rated construction: Built to withstand moisture, UV exposure, and vibration.
- Black grille included: Clean, aggressive appearance for modern marine installations.
Why You’ll Like It: The M1D4-12B combines strong low-frequency performance with dynamic RGB lighting, making it ideal for boaters who want both powerful bass and visual impact. Its marine-grade design ensures dependable performance even in demanding open-water conditions.
Built for Marine & Powersports Use: Designed to handle harsh marine environments, this subwoofer delivers consistent bass output while resisting corrosion, UV damage, and vibration during extended use.
What’s In The Box
- Rockford Fosgate M1D4-12B 12″ Marine Subwoofer
- Black subwoofer grille
- Mounting hardware
- Installation documentation
Specifications
| Brand | Rockford Fosgate |
| Model / Part Number | M1D4-12B |
| Product Type | Marine subwoofer |
| Subwoofer Size | 12 inches |
| Impedance | 4 ohm |
| Lighting | Color Optix RGB |
| Grille Color | Black |
| Construction | Marine-grade materials |
| Application | Marine and powersports audio systems |
| Mounting | Flush mount |








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