The M1D4-10B Color Optix(TM) 10" DVC 4-Ohm subwoofers deliver loud, clear, accurate bass, and light the way for your journey! Sold individually (1 each). Color Optix(TM): Adjust your own bright, wide, and limitless lighting experience with the Rockford Fosgate Color Optix(TM) plug-and-play controller (sold separately) and App. Element Ready(TM): Purpose Built for the Marine Environment, Rockford&&';;s Element Ready(TM) products are built to stand up to Water, Salt, and UV rays, making sure your subwoofers stand the test of time. True Marine Ecosystem: Integrated Deutsch(TM) / Amphenol(TM) connections provide industry leading marine plug-and-play connectivity and flexible install options. Color Optix(TM): Requires PMX-RGB controller and RF Connect(TM) App The M1 series of Element Ready(TM) subwoofers are designed to pair with the Rockford Fosgate Color Optix(TM) Controller and RF Connect App through its Deutsch(TM) and Amphenol(TM) connectors integrated into the basket. This combined with their IP67 certification make these speakers Element Ready(TM) and truly purpose built for marine applications. To compliment the plug and play connectivity and streamline installation, M1 subwoofers are equipped with a VersaSwitch(TM) to make changing impedance between 2 and 8 ohms as easy as flipping a switch. FEATURES AT A GLANCE 2-Year Warranty 100% UV Stable ASA plastic frame & grille design stands up to harsh marine environment Santoprene VAST Surround VAST vertical attach surround technique increases effective radiating cone area up to 25% Vented motor design with water-repelling nano coated mesh screen Fully insulated silicone tinsel leads Ultra-bright wide-angle RGB LEDs provide rich, reliable illumination Industry&&';;s first molded in-frame connectors for simple connectivity in addition to conventional spade terminals Integrated Deutsch(TM)/Amphenol(TM) connectors make wiring connections simple and error proof VERSA impedance switch quickly allows series or parallel configuration without additional wiring 2" (50mm) High Temp Kapton(TM) Woofer Voice Coil Former Linear Synthetic Fiber Blend Spiders Co-molded surround and mineral filled polypropylene cone body Zinc Nickel-plated Marine grade brass connection terminals Optically clear UV stable RGB Lighting Encapsulation Injection molded mineral filled polypropylene cone body with UV inhibitors Element Ready(TM) | Subwoofers All components are protected against harsh outdoor elements like Dust, UV, Temperature, Water, Corrosion & Vibration. ASTM B117 Testing ASTM B117 500Hr Salt/Fog Testing Standards Klippel Verified Klippel is a speaker certification program allowing us to deliver the best possible subwoofers. ASTM G154 Testing ASTM G154 500Hr Accelerated UV testing IPX6 Water Intrusion Rated Water projected in powerful jets from any direction shall have no harmful effects. ISO60068-2-64 Vibration Testing ISO60068-2-64 Vibration testing standards ensure the product is durable and can withstand vibrations found on watercraft and motorsport applications. VAST Surround - Marine The Vertical Attach Surround Technique significantly increases a subwoofer&';s effective radiating cone area up to 25%. VERSA Switch Allows you to easily switch Dual Voice Coils into a Series or Parallel configuration. Voice Coil Type Dual Voice Coil Size 10" Nominal Impedance (Ohms) 2-Ohm or 8-Ohm Switchable Frequency Response 20 Hz - 750 Hz Power Handling (Watts RMS) 300 Watts RMS1200 Watts PEAK Voice Coil Diameter 2" (50mm) Magnet Weight (oz) 47.70 oz. (1.35 Kg) Fs (Hz) 37 Re (Ohms) 7.5 Le (mH) 3.87 Sd (cm2) 394.1 Qms 7.23 Qes 0.51 Vented Box Volume (Vb) 1.45 cu. ft. (41.06 Liters) Sealed Box Volume (Vb) 1.1 cu. ft. (31.15 Liters) Qts 0.47 Vas 39.3 SPL (dB @ 1w/1m) 91.5 Xmax (mm) 7.0 Woofer Displacement 0.10 cu. ft. (2.80 Liters) Speaker Connector Deutsch(TM) Cutout Diameter 8.90 in. (226 mm) Mounting Depth 4.23 in. (107.4 mm) Shipping Weight 8.6 Lbs. (3.9 Kg) Available Wiring Diagrams Please consult your amplifier owner&';s manual for lowest recommended impedance. Wiring Diagram #1 Wiring Diagram #2 Wiring Diagram #3 Wiring Diagram #4 Wiring Diagram #5 Wiring Diagram #6 Wiring Diagram #7 Wiring Diagram #8 Wiring Diagram #9