Rockford Fosgate M1D4-12 Series 12" 300W RMS (1200W Peak Power Handling) 4 Ohm, Dual Voice Coil RGB Marine Subwoofer (White)
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What's Inside?
- • 12" RGB Marine Subwoofer (White)
- • 11" LED power harnesses with 4-pin Deutsch connector on one end
- • (6) 2" Stainless steel Allen head screws
- • 4mm Allen head bit
- • 4.5mm Drill bit
- • Owner's Manual
Built for the Ultimate Marine Experience
Enjoy industry-first molded in-frame connectors for effortless installation, stunning UV-stable RGB lighting for long-lasting brilliance, and a robust 2-inch Kapton™ voice coil for reliable high-power handling. With error-proof wiring and a UV-resistant ASA frame, this speaker is ready for the toughest marine conditions.
Unmatched Marine Audio Power and Style
Experience the perfect blend of durability and performance with a water-repelling vented motor, ultra-bright wide-angle RGB LEDs for stunning illumination, corrosion-resistant marine-grade terminals, and VAST surround technology that boosts cone area by up to 25% for massive sound output—all backed by precision suspension for smooth, controlled performance.
Engineered for Extreme Performance and Reliability
Take your marine audio to the next level with a UV-protected, injection-molded polypropylene cone for unmatched strength, a Santoprene VAST surround co-molded for superior durability and sound clarity, and fully insulated silicone tinsel leads for secure, long-lasting wiring—all paired with the VERSA switch for effortless impedance changes without extra hassle.
Frequently Asked Questions (FAQ)
- • Why Does My M1D4-12 Sound Muddy Instead of Punchy?
A muddy bass response can result from an enclosure that is not properly matched to the woofer or from an overly low crossover setting. Check the enclosure volume and adjust the low-pass filter before increasing amplifier gain.
- • Why Does the Subwoofer Have Different Output After Switching the Impedance?
The M1D4-12 uses Rockford Fosgate's VERSA impedance switch to configure the dual voice coils for 2Ω or 8Ω operation. Changing the setting also changes the load seen by the amplifier, so the amplifier must be capable of handling the selected configuration.
- • Why Does My M1D4-12 Cause the Amplifier to Enter Protection?
A protection shutdown can occur when the amplifier is overloaded, overheats, or sees an unsuitable speaker load. Verify the VERSA switch position, wiring, amplifier impedance rating, and power/ground connections before continuing to run the system at high output.
- • Why Is the Bass Uneven After Installing the Subwoofer?
Uneven bass can be caused by the subwoofer's mounting location, enclosure orientation, or cabin/boat acoustics. Moving the woofer or changing its orientation can sometimes make a larger difference than increasing amplifier power.
- • Why Does My M1D4-12 Rattle When Certain Bass Notes Play?
A rattle may come from the installation rather than the woofer itself. Check the grille, mounting screws, surrounding trim, and enclosure panels for loose hardware that can vibrate when the 12-inch cone moves.
- • Why Does the M1D4-12 Sound Weak Even Though It Is Rated at 1,200 Watts Peak?
The 1,200W figure is peak power, while the continuous RMS rating is 300W. Amplifier matching should be based primarily on the RMS specification, not the peak number printed on the product.
- • Why Is My Subwoofer Hard to Install Even Though the Cutout Is Correct?
The mounting hole alone does not determine whether the installation will work. The M1D4-12 requires approximately 10.85 inches of cutout diameter and 6.65 inches of mounting depth, so rear clearance for the magnet, wiring, and surrounding hardware should also be checked.
- • Why Does My M1D4-12 Lose Bass When I Increase the Volume?
If bass disappears or becomes noticeably weaker as volume rises, the amplifier may be clipping, entering protection, or experiencing voltage drop. Real-world audio users commonly report overheating and protection issues when an amplifier is pushed hard or connected to an unsuitable impedance.
- • Why Does the Subwoofer Work but the RGB Lighting Does Not?
The M1D4-12 can produce audio even when its Color Optix lighting circuit is not functioning. Check the RGB controller, lighting power, connectors, and app configuration separately from the speaker wiring. The Color Optix controller is sold separately.
- • Why Does My M1D4-12 Stop Playing After Being Exposed to Water?
Although the M1D4-12 is designed for marine environments, water exposure can still reveal problems with external wiring, connectors, or installation. Inspect the Deutsch/Amphenol connections and marine-grade terminals for looseness, corrosion, or damaged seals before assuming the subwoofer itself has failed.
- Diameter : 12 Inch
- Sensitivity : 92 dB
- Impedance : 4 Ohm
- Frequency Response : 20-750 Hz
- RMS Power Range : 300 Watts
- Peak Power Handling : 1200 Watts
- Color : White
- Mounting Depth : 6.65 Inches
Features:
- Industry-First Connectivity: Molded in-frame connectors plus conventional spade terminals for quick, secure installation
- Brilliant RGB Illumination: Optically clear, UV-stable lighting encapsulation for vibrant color that lasts
- High-Temperature Voice Coil: 2" (50mm) Kapton™ woofer voice coil former ensures reliable high-power performance
- Error-Proof Wiring: Integrated Deutsch™/Amphenol™ connectors for simple, fail-safe connections
- UV-Proof Construction: 100% UV-stable ASA plastic frame and grille built to endure harsh marine environments
- Protected Motor Design: Vented motor with nano-coated mesh repels water for long-term durability
- Ultra-Bright LEDs: Wide-angle RGB LEDs deliver rich, reliable illumination for a stunning visual experience
- Marine-Grade Terminals: Zinc nickel-plated brass terminals resist corrosion in saltwater environments
- Maximized Output: VAST surround technology increases effective cone area by up to 25% for bigger sound
- Precise Performance: Linear synthetic fiber blend spiders for stable suspension and controlled movement
- Durable Cone Construction: Injection-molded, mineral-filled polypropylene cone with UV inhibitors for superior strength
- Santoprene VAST Surround: Flexible yet rugged surround for consistent performance in extreme conditions
- Co-Molded Design: Surround and cone are co-molded for enhanced durability and sound quality
- Secure Wiring: Fully insulated silicone tinsel leads for safe, long-lasting connectivity
- Quick Impedance Switching: VERSA switch allows fast series or parallel configuration without extra wiring
Specifications:
- Voice Coil Type: Dual Voice Coil
- Nominal Impedance (Ohms): 2-Ohm or 8-Ohm Switchable
- Size: 12"
- Power Handling (Watts RMS): 300 Watts RMS
- 1200 Watts PEAK
- Voice Coil Diameter: 2" (50 mm)
- Magnet Weight (oz): 39.75 oz. (1.13 Kg)
- Frequency Response: 20 Hz - 750 Hz
- Fs (Hz): 26
- Re (Ohms): 3.8
- Le (mH): 2.02
- Sd (cm2): 585.4
- Qms: 7.47
- Qes: 0.57
- Qts: 0.53
- Vas: 114.2
- SPL (dB @ 1w/1m): 92
- Xmax (mm): 6.0
- Woofer Displacement: 3.49 cu. ft. (0.12 Liters)
- Speaker Connector: Deutsch™
- Cutout Diameter: 10.85 in. (275.6 mm)
- Mounting Depth: 6.65 in. (169.1 mm)
- UPC: 780687353865
- Weight: 10
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
