M1D4-8B 8″ DVC 4Ω Color Optix™ Marine Subwoofer



The M1D4-8 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.

The M1 series of Element Ready™ subwoofers are designed to pair with the Rockford Fosgate Color Optix™ Controller and RF Connect App through its Deutsch™ and Amphenol™ connectors integrated into the basket. This combined with their IP67 certification make these speakers Element Ready™ and truly purpose built for marine applications. 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.

  • Optically clear UV stable RGB Lighting Encapsulation
  • Ultra-bright wide-angle RGB LEDs provide rich, reliable illumination
  • Vented motor design with water-repelling nano coated mesh screen
  • 1.5″ (39mm) High Temp Kapton™ Woofer Voice Coil Former
  • Fully insulated silicone tinsel leads
  • 100% UV Stable ASA plastic frame & grille design stands up to harsh marine environment
  • Zinc Nickel-plated Marine grade brass connection terminals
  • Industry’s first molded in-frame connectors for simple connectivity in addition to conventional spade terminals
  • Integrated Deutsch™/Amphenol™ connectors make wiring connections simple and error proof
  • Linear Synthetic Fiber Blend Spiders
  • Santoprene VAST Surround
  • VAST vertical attach surround technique increases effective radiating cone area up to 25%
  • Co-molded surround and mineral filled polypropylene cone body
  • VERSA switch allows series or parallel wiring with flip of switch without additional wiring
  • 2-Year Warranty
Nominal Impedance (Ohms)
2-Ohm or 8-Ohm Switchable
Le (mH)
Re (Ohms)
Frequency Response
20 Hz – 750 Hz
SPL (dB @ 1w/1m)
Sd (cm2)
Woofer Displacement
1.40 (0.05 Liters)
Xmax (mm)
Vas (Liters)
Fs (Hz)
Power Handling (Watts RMS)
150 Watts RMS
600 Watts PEAK
Magnet Weight (oz)
17.72 oz. (0.50 Kg)
Voice Coil Diameter
1.5″ (38.6 mm)
Speaker Connector
Shipping Weight
4.6 Lbs. (2.10 Kg)