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  3. Prime RM112D2B / RM112D4B

Rockford Fosgate Prime RM112D2B / RM112D4B 12" (30cm) Subwoofer

200 Watt

Rockford Fosgate Prime RM112D2B / RM112D4B 12" (30cm) Subwoofer

Technical 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".
  • More technical details
€169,00
€169,00 €169,00
5% discount with prepayment
inkl. VAT , possibly plus shipping
Impedance: D2 (2x2 Ohm)
Delivery
Mar 23, - Mar 26,
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Rockford Fosgate-Prime RM112D2B / RM112D4B-12" (30cm) Subwoofer-masori-kaufen
€169,00
€169,00 €169,00

Prime RM112D2B / RM112D4B by Rockford Fosgate

The RM112D2 is a black 12-inch subwoofer from Prime R1, designed for watercraft and powersports 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
  • True marine-grade compliance
  • UV- and salt spray-resistant Santoprene surround
  • 100% UV-resistant ASA injection-molded parts
  • Ultra-flexible, fully insulated silicone lead wire
  • Injection-molded, mineral-filled polypropylene cone with UV inhibitors
  • Proprietary corrosion-resistant spring-loaded pressure terminals
  • Removable trim ring/cooling grille
  • Moisture-, tear-, and fatigue-resistant aramid fiber braid
Technical Specifications
  • Power Handling (RMS) 200 Watts
  • Power Handling (MAX) 400 Watts
  • Impedance D2 (Ohms): 1 Ohm or 4 Ohms
  • Impedance D4 (Ohms): 2 Ohms or 8 Ohms
  • Sd (cm2) 585
  • Le (mH) 2.16
  • Re (Ohms) 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 inch
  • Nominal Impedance Dual 2-Ohm
  • Cutout Diameter 276 mm
  • Woofer Volume 3.49 liters
  • Voice Coil Diameter 2" Aluminum

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Frequently Asked Questions about Prime RM112D2B / RM112D4B

What are the specifications of the Prime RM112D2B?

The Prime RM112D2B from Rockford Fosgate has a power handling of 200 Watts RMS and reaches a maximum power of 400 Watts. These specifications, combined with a high sensitivity of 89 dB (SPL @ 1w/1m), ensure that the Subwoofer delivers impressive bass performance 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.

What materials and construction are used in the Prime RM112D2B?

The Prime RM112D2B features 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 terminals are used, which ensure an optimal and lasting connection.

How resistant is the RM112D2B to environmental influences?

The RM112D2B has been specifically designed for use in watercraft and powersport applications, offering a complete UV and salt fog resistant construction. The Santoprene surround and ASA injection-molded parts guarantee high resistance to UV radiation and moisture. The materials have been selected to withstand even extreme conditions and provide a long lifespan. This makes the Subwoofer particularly suitable for applications in marine environments, where reliability and weather resistance are crucial.

What installation options does the Prime RM112D2B offer?

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 tailored to specific acoustic requirements and spatial conditions. The cutout diameter is 276 mm, enabling easy installation in most common speaker enclosures. The volume of the subwoofer 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.

What technical features are particularly noteworthy about the RM112D2B?

The RM112D2B has several standout technical features: The proprietary spring-loaded terminals provide a corrosion-resistant connection. With a maximum linear excursion (Xmax) of 7.0 mm, the Subwoofer delivers precise bass reproduction at high levels. The subwoofer is CEA-2031 compliant, certified for true power comparison. The impedance options of 1 or 4 ohms (D2) and 2 or 8 ohms (D4) allow for versatile connections to various amplifier systems, ensuring optimal adaptation to sound preferences.

What Thiele-Small parameters does the Prime RM112D2B have?

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 ideal for deep bass reproduction. Such detailed parameters are essential for precise technical tuning and sound transmission in different enclosure configurations.

How does the RM112D2B behave in terms of impedance across different models?

The Prime RM112D2B offers flexible impedance options. You can operate the D2 version with either 1 ohm or 4 ohm, while the D4 version provides 2 or 8 ohm. This adaptability allows the Subwoofer to be tailored to a variety of amplifier systems and setup requirements. Especially in high-powered audio setups in marine environments, this can be crucial for effective system configuration to achieve maximum sound enjoyment without compromising speaker control and safety.

What are the dimensions of the RM112D2B and how do they affect installation options?

With a size of 12 inches and a cutout diameter of 276 mm, the Prime RM112D2B is designed for a variety of installation possibilities. These dimensions allow the Subwoofer to be integrated into many common speaker enclosures or custom-designed housings. Additionally, this facilitates fitting into tight spaces, as often found in watercraft or powersport applications. Besides the diameter, the driver volume of 3.49 liters also plays a role in choosing the enclosure to ensure an ideal fit and acoustic performance.

What advantages do the ASA injection-molded parts of the Prime RM112D2B offer?

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.

How does the 2" voice coil diameter of the RM112D2B affect performance?

The Prime RM112D2B is equipped with a 2-inch aluminum voice coil, which is responsible for efficiently converting electrical energy into sound waves. This size is ideal for dissipating heat well and ensuring precise cone movement. A larger voice coil can handle more energy, which enhances bass reproduction and the overall sound performance of the Subwoofer. Such a design also allows for higher load capacity and reduces the risk of distortion at high volumes.

Manufacturer information / responsible person

Audio Design Loudspeaker Sales GmbH
Am Breilingsweg 3
76709 Kronau
Germany

Authorized Managing Director:
Bruno Dammert

Contact: info@audiodesign.de

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