ROCKFORD RM112D4B – Marine Black Subwoofer 30 cm Prime Series – 200 W RMS – 2/8 Ohms
Produit disponible sous 6 jours.
SKU: RM112D4B
Category: 30 cm Subwoofers - Dynamic Bass, Home Page, Marine Subwoofer – Deep Bass, Rockford Fosgate
Vendeur:Rockford

ROCKFORD RM112D4B – Marine Black Subwoofer 30 cm Prime Series – 200 W RMS – 2/8 Ohms
The Rockford RM112D4B is a 12-inch (30 cm) dual-voice 4-Ohm subwoofer designed for marine and powersports applications. Its sleek black finish and removable matching grille make it ideal for any aesthetically pleasing and durable outdoor installation. Constructed with UV-, moisture-, and vibration-resistant materials, it delivers performance and reliability even in the most extreme environments.
Main features
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Size : 12 inches (30 cm)
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RMS power : 200 Watts
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Max Power : 400 Watts
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Impedance : Dual voice coil – 2 Ohms or 8 Ohms (D4 model)
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Premium marine design : Salt spray, UV and water resistant
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Membrane : Injected polypropylene, mineralized, anti-UV treated
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Suspension : Santoprene resistant to external aggressions
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Connections : Anti-corrosion spring-loaded push terminals
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Removable black grille included
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Installation : Compatible with sealed enclosure, bass-reflex or infinite baffle
Box contents
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1 x Rockford RM112D4B subwoofer black
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1 x Matching black grille
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1 x Installation Guide
Technical specifications
Characteristic | Value |
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Size | 12" (30 cm) |
Impedance | 2 or 8 Ohms (dual coil 4 Ohms) |
RMS power | 200 Watts |
Max Power | 400 Watts |
SPL sensitivity | 89 dB (1W/1m) |
Fs | 28.5 Hz |
D | 3.7 Ohms |
THE | 2.16 mH |
Sd | 585 cm² |
Qes / Qms / Qts | 0.62 / 10.06 / 0.59 |
Xmax | 7 mm |
Displaced volume | 3.49 L |
Cutting diameter | 276 mm |
Coil diameter | 2” aluminum |
CEA-2031 Standard | Compliant |
Recessed dimensions
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Cutting diameter : 276 mm
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Recessed depth : Not specified
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Recommended volume : Compatible with closed, ventilated or infinite baffle
Why choose the Rockford RM112D4B?
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✅ Specially designed for marine and extreme environments
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✅ Sober look with removable black grille
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✅ Dual coil for flexible wiring: 2 or 8 Ohms
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✅ Perfect for installation on boat, UTV or pickup truck
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✅ Components resistant to humidity, salt and UV rays
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✅ Precise and efficient sound even at low power
Shipping Policy
At Multison, we are committed to providing you with a fast, reliable and secure delivery service for all your in-car audio, video and multimedia products.
Delivery Zones
We deliver to mainland France and several European countries, directly from our warehouse in France.
Delivery Times
Delivery times vary depending on the product and destination:
- Metropolitan France : Generally, 4 to 8 working days after order processing.
- Europe : Approximately 5-15 business days depending on destination and local shipping conditions.
Please note that delivery times are indicative and may vary depending on periods of high demand, such as holidays or sales.
Order Tracking
As soon as your order is shipped, you will receive a confirmation email containing a tracking number allowing you to follow your package in real time.
Shipping Costs
Shipping costs are automatically calculated at checkout based on the size, weight and destination of your package. Free shipping options may be available for certain purchase amounts or during special promotions.
Delays and Incidents
In case of any delay or problem related to the delivery, our customer service is at your disposal to assist you. You can contact us via our "We are here to help you" page for any questions or follow-ups.
Returns
We want you to be completely satisfied with your purchases. If you are not completely satisfied, here is our return policy:
- Return Period : You have 14 days from receipt of your order to make a return.
- Return Conditions : Items must be in their original condition, unused, and in their original packaging.
- Return Procedure : Please contact our customer service via our "We're here to help" page for return instructions. Return fees may apply depending on the circumstances.
We are here to support you in your shopping experience and ensure your satisfaction.
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Installation guides
Access detailed tutorials and tips for simple and successful installation of your equipment.
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Care instructions
Follow our recommendations to keep your equipment in perfect condition and extend its lifespan.
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Specific Services
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