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Rockford Fosgate

Prime RM112D2B / RM112D4B

12" (30cm) Subwoofer

169,00€
169,00€ 169,00€
incl. VAT , possibly plus shipping

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Highlights

  • Power consumption 200W RMS, 400W max., SPL 89 dB @ 1W/1m.
  • Impedance D2: 1 ohm or 4 ohm, dual 2 ohm, Re 3.7 ohm.
  • Voice coil diameter 2", volume 3.49 liters, size 12".
Impedance: D2 (2x2 Ohm)
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brand: Rockford Fosgate
Delivery time:
Available, in 2-5 days with you
Number:
Piece
Watt RMS:
200
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Rockford Fosgate-Prime RM112D2B / RM112D4B-12" (30cm) Subwoofer-masori-kaufen
169,00€
169,00€ 169,00€

The RM112D2 is a black 12" subwoofer from Prime R1, designed for watercraft and powersport applications. It features a color-matched grille and is UV and moisture resistant. It can be used in sealed, vented, or infinite baffle installations.

Technical Features
  • Real Marine-Grade Compliance
  • UV and salt mist resistant Santopren edging
  • 100% UV-resistant ASA injection molded parts
  • Ultraflexible, fully insulated silicone wire
  • Sprayed, mineral-filled polypropylene cone body with UV inhibitors
  • Proprietary corrosion-resistant spring-loaded pressure clamps
  • Removable target ring/grille
  • Moisture-, tear- and fatigue-resistant aramid fiber mesh
Technical Data
  • Power consumption (RMS) 200 Watts
  • Power consumption (MAX) 400 Watts
  • Impedance D2 (Ohm): 1 Ohm or 4 Ohm
  • Impedance D4 (Ohm): 2 Ohm or 8 Ohm
  • Sd (cm)2) 585
  • The (mH) 2.16
  • Re (Ohm) 3.7
  • Qes 0.62
  • Qms 10.06
  • Fs (Hz) 28.5
  • Qts 0.59
  • Xmax (mm) 7.0
  • SPL (dB @ 1w/1m) 89
  • CEA-2031-compliant
  • Size 12"
  • Nominal Impedance Dual 2-Ohm
  • Cut-out diameter 276 mm
  • Volume of the subwoofer 3.49 liters
  • Winding coil diameter 2" Aluminum
The Prime RM112D2B from Rockford Fosgate has a power handling of 200 Watts RMS and reaches a maximum power of 400 Watts. These power specifications, combined with a high sensitivity of 89 dB (SPL @ 1w/1m), ensure that the subwoofer delivers impressive bass reproduction even in demanding environments. The sub is equipped with a voice coil diameter of 2 inches, which provides efficient and powerful bass. The dual 2-ohm nominal impedance allows for flexible adaptation to various amplifier configurations.
The Prime RM112D2B relies on high-quality materials such as an injection-molded polypropylene cone body, which is equipped with UV inhibitors. These ensure durability and resistance to environmental influences, which is particularly advantageous in marine environments. The mineral-filled material stabilizes the cone and improves sound fidelity. Moisture resistance is ensured by an aramid fiber mesh that prevents cracks and fatigue. To avoid corrosion, spring-loaded pressure clamps are used, which ensure an optimal and lasting connection.
The RM112D2B has been specifically designed for use in watercraft and powersport applications, offering a complete UV and salt mist resistant construction. The Santoprene edging and ASA injection molded parts ensure high resistance to UV radiation and moisture. The materials have been selected to withstand even extreme conditions and provide a long service life. This makes the subwoofer particularly suitable for applications in marine environments, where reliability and weather resistance are crucial.
The Prime RM112D2B subwoofer can be installed in various enclosure types, including sealed, vented, or infinite baffle designs. This versatility allows the subwoofer to be adapted to specific acoustic requirements and spatial conditions. The cutout diameter is 276 mm, which enables easy installation in most common speaker enclosures. The volume of the woofer is 3.49 liters, providing ample space for rich and deep bass. When installing, it is important to ensure that the sub is adequately ventilated to guarantee optimal performance.
The RM112D2B has some outstanding technical features: The proprietary spring-loaded pressure terminals provide a corrosion-resistant connection. With a maximum linear displacement (Xmax) of 7.0 mm, the subwoofer delivers precise bass reproduction at high levels. The subwoofer is CEA-2031 compliant, thus certified for true power comparison. The impedance options of 1 or 4 Ohms (D2) and 2 or 8 Ohms (D4) allow for versatile connection possibilities to various amplifier systems to ensure optimal adaptation to sound preferences.
The Prime RM112D2B has the following Thiele-Small parameters: The effective diaphragm area (Sd) is 585 cm², and the voice coil inductance (Le) is specified at 2.16 mH. The DC resistance (Re) is 3.7 Ohms. The quality factors Qes and Qms are 0.62 and 10.06, respectively, resulting in a total quality factor (Qts) of 0.59. The resonance frequency (Fs) is set at 28.5 Hz, which is predestined for deep bass reproduction. Such differentiated parameters are essential for precise technical adjustment and sound transmission in different enclosure configurations.
The Prime RM112D2B offers flexible impedance options. You can operate the D2 version at either 1 ohm or 4 ohms, while the D4 version provides 2 or 8 ohms. This adaptability allows the subwoofer to be tailored to a variety of amplifier systems and setup requirements. Especially in high-power audio setups in the marine sector, this can be crucial for effective system configuration to achieve maximum sound enjoyment without compromising speaker control and safety.
With a size of 12 inches and a cutout diameter of 276 mm, the Prime RM112D2B is designed for a variety of installation options. These dimensions allow the subwoofer to be integrated into many common speaker boxes or specially adapted enclosures. Additionally, this facilitates fitting into tight spaces, as often found in watercraft or powersport applications. Besides the diameter, the woofer volume of 3.49 liters also plays a role in choosing the enclosure to ensure an ideal fit and acoustic performance.
The ASA injection molded parts used in the RM112D2B are 100% UV resistant, making them ideal for use in direct sunlight. ASA is known for its excellent color stability and high impact resistance, which is particularly important in marine applications. These materials provide long-term reliability and ensure that the speaker maintains its shape and function even under heavy external stress. The resistance to discoloration and adherence to structural integrity significantly contribute to the product's durability.
The Prime RM112D2B is equipped with a 2-inch aluminum voice coil, which is responsible for the efficient conversion of electrical energy into sound waves. This size is ideal for both effectively dissipating heat and ensuring precise cone movement. A larger voice coil can handle more power, contributing to improved bass reproduction and the overall sound performance of the subwoofer. Such a design also allows for higher power handling and reduces the risk of distortion at high volumes.

Audio Design Loudspeaker Sales GmbH
Am Breilingsweg 3
76709 Kronau
Germany

Authorized Managing Director:
Bruno Dammert

Contact: info@audiodesign.de

Product Specifications

Manufacturer

Rockford Fosgate

Product type

12" (30cm) subwoofer

Features

  • Highlights

    • Power consumption 200W RMS, 400W max., SPL 89 dB @ 1W/1m.
    • Impedance D2: 1 ohm or 4 ohm, dual 2 ohm, Re 3.7 ohm.
    • Voice coil diameter 2", volume 3.49 liters, size 12".

  • Uvp

    169

weight

4.0 kg

Watt RMS Load Capacity

200

configurators

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Your advantages with Masori

Rockford Fosgate Prime RM112D2B / RM112D4B: Power consumption and efficiency

With an RMS power rating of 200 watts and a maximum power handling of 400 watts, the Rockford Fosgate Prime RM112D2B / RM112D4B offers efficient bass reproduction for marine and powersport applications. These values ​​allow for a fine balance between power consumption and sound quality. While a higher RMS power rating could result in louder bass, it would also increase power consumption and potential heat generation. CEA 2031 compliance ensures that these power ratings were measured under standardized, real-world conditions. A lower power rating would result in a loss of power, which would negatively impact the sound experience.

Impedance options in practice: Flexibility of the RM112D2B / RM112D4B

The dual voice coil configuration, with impedance options of 1 ohm or 4 ohms for the RM112D2B and 2 ohms or 8 ohms for the RM112D4B, offers versatile wiring options for ideally matching the subwoofer to the amplifier system in use. A lower impedance of 1 ohm or 2 ohms allows for more power, but places greater demands on the amplifier, potentially resulting in increased thermal stress. Higher impedances offer easier integration into existing systems and often offer easier cooling, which is beneficial for longer operating times.

Technical performance of the Rockford Fosgate subwoofer: frequency and resonance

With a resonant frequency (Fs) of 28.5 Hz, this subwoofer offers deep bass reproduction, which is particularly beneficial for use in sealed or vented installations. Low resonant frequencies promote deep, rich bass, which is ideal for nautical sound systems that often compete with external noise. A higher Fs would result in a smaller cabinet volume, but the bass could lose punch and depth, which could negatively impact the sound experience.

Construction of the 12 Rockford Fosgate subwoofer: High-quality materials

This 12 subwoofer features an injection-molded, mineral-filled polypropylene cone and UV-inhibited plastic to withstand extreme weather conditions. The strength and durability of the material are critical for use on watercraft exposed to UV radiation and salt spray. Experience with inferior materials has shown that they are more susceptible to cracking and deformation, which can drastically reduce sound quality. The RM112D2B / RM112D4B remains stable even under stress.

RM112 Series connection options: Proprietary pressure terminals

Proprietary, corrosion-resistant, spring-loaded compression clamps provide the subwoofer with secure and durable connections, which are especially essential in humid environments. The reliability of the connections ensures consistent audio performance and enables quick and easy installation. Poor connections often lead to power loss or electrical issues that could compromise performance. Rockford Fosgate engineers have optimized solutions for rugged marine applications.

Santoprene bindings and aramid fiber braid: Marine-grade compliance

The Prime RM112D2B / RM112D4B subwoofer utilizes UV- and salt-fog-resistant Santoprene surrounds combined with a moisture-, tear-, and fatigue-resistant aramid fiber braid. These material combinations ensure the subwoofer is extremely durable and can withstand the harsh conditions found on boats or powersports vehicles. Alternatives made from less durable materials tend to wear out quickly, which defines the value retention and long-term usability of this Rockford Fosgate subwoofer.

Rockford Fosgate Subwoofer: Voice Coil Technology and Reliability

The 2 aluminum voice coil diameter ensures improved heat dissipation and more effective power utilization. Larger voice coils generally offer better thermal performance, meaning the subwoofer can operate under harsher conditions without sacrificing performance. Smaller diameters often lead to overheating and thus a reduction in the lifespan of the subwoofer. Aluminum as a material also supports the efficiency of this component.

Installation and mounting options: Flexibility with the Rockford Fosgate RM112D2B / RM112D4B

With a cutout diameter of 276 mm and a total woofer volume of 3.49 liters, the RM112D2B / RM112D4B offers sufficient flexibility for various installation scenarios. Whether in sealed, vented, or infinite baffle installations, the compact design combined with the adaptability of the design enables a variety of installation techniques on watercraft. For the implementation of specific installations, Masori offers on-site installation in Frankfurt (Oder) .

Rockford Fosgate Prime RM112D2B / RM112D4B: Optimized usability and maximum flexibility

The removable decorative ring/grille not only provides protection and durability, but also facilitates adjustments and maintenance. A removable grille minimizes the risk of physical pressure or unauthorized access, which is particularly relevant in nautical applications. Larger grilles are often bulky and can be aesthetically unsightly, while smaller grills may not provide the necessary protection. The Rockford Fosgate subwoofer not only offers outstanding sound reproduction in challenging conditions, but also impressive durability and flexibility – aspects that make the RM112D2B / RM112D4B superior for installations in water and powersports applications. For optimal advice and support, Masori offers not only expert support (FAQ & Help) but also valuable articles in its Audio Blog .