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  3. Rockford Fosgate Speakers, Subwoofers & More for Cars
  5. Prime R2-300X4
Rockford Fosgate Prime R2-300X4 4-Channel Amplifier
75 Watt
Rockford Fosgate

Prime R2-300X4

4-Channel Amplifier

Technical Highlights

  • 300W 4-channel, Class-D, CLEAN setting, auto-sense bypass.
  • Balanced inputs, variable infrasonic filter, RCA pass-through.
  • Fully adjustable switches, short circuit and overcurrent protection.
  • More technical details
€299,00
€299,00 €299,00
5% discount with prepayment
inkl. VAT , possibly plus shipping
Delivery
Mar 25, - Mar 28,
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Prime R2-300X4 by Rockford Fosgate

The Prime R2 series, which includes the Rockford Fosgate Prime R2-300X4 4-channel amplifier, was designed for car audio enthusiasts looking for a reliable amplifier that delivers the power and performance Rockford Fosgate is known for at an affordable price. Rockford Fosgate amplifiers are known worldwide for being "underrated," effortlessly exceeding all specifications and - most importantly - producing more power than their rated values. These 3rd generation amplifiers of the Prime Series have been refined with the latest Rockford Fosgate technology for easy setup and configuration, making them perfect for use with factory audio or custom aftermarket systems.

features

  • Symmetrical differential inputs with RCA pass-through outputs
  • High-level input suitable
  • Auto-Sense-Bypass Switch for Vehicles with RAP (Retained Accessory Power)
  • 2/4 Kanal Input Selector Switch
  • Features of C.L.E.A.N. Attitude
  • Variable input gain on the front and back side
  • Top-mounted control panel
  • Protection against short circuit and overcurrent
  • CEA-2006 compliant & CE compliant
  • Aluminum cast heat sink
  • Full-range Class-D
  • Fully adjustable 12 dB/octave high-pass and low-pass Butterworth filters

Specifications

  • 4-channel amplifier
  • RMS Power:
    • 50 Watt x 4 @ 4Ω
    • 75 Watt x 4 @ 2Ω
    • 150 Watt x 2 @ 4Ω Bridging/Mono
  • Dynamic Power
    • 70 Watt x 4 @ 4Ω
    • 115 Watts x 4 @ 2Ω
    • 230 Watt x 2 @ 4Ω Bridging/Mono
  • Bridgable: Yes
  • Frequency response: 20 Hz - 20 kHz
  • Input sensitivity: Low-Level: 150 mV - 4 V
  • High level: 450 mV - 12 V
  • Circuit topology class: Class-D
  • Signal input: Front Low-Level: 4 RCA
  • Front Side High-Level: 4-Pin Molex
  • Rear Low Level: 4 RCA
  • Rear High Level: 4-Pin Molex
  • Input switch: 2/4 input (works for RCA/Hi-Level inputs)
  • Signal output: Low-Level: 2 RCA (Pass-Thru active with RCA or Hi-Level input)
  • Front High Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth
  • Front Low Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth
  • Backwards high-pass: 50 Hz - 250 Hz @ 12dB/octave Butterworth
  • Reverse low-pass: 50 Hz - 250 Hz @ 12dB/octave Butterworth
  • Remote controls: No
  • Cable diameter: 20mm²
  • Speaker cable diameter: 8mm²
  • Cooling: Convection
  • Operating voltage: 9 - 16 VDC
  • Recommended fuse: 60 A
  • Max. current consumption (13.8 V sine): 39 A
  • Dimensions (H x W x D): 4.9 cm x 17.3 cm x 25.5 cm

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Frequently Asked Questions about Prime R2-300X4

What is the power output of the Prime R2-300X4 Amplifier?

The Rockford Fosgate Prime R2-300X4 is a 4-Channel Amplifier that delivers an RMS power of 50 watts per channel at a load of 4 ohms. At 2 ohms, the power increases to 75 watts per channel. When you operate the Amplifier in bridged mode, the power rises to 150 watts at 4 ohms. The dynamic power is 70 watts per channel at 4 ohms and 115 watts at 2 ohms, while in bridged mode, 230 watts can be achieved. These values show that the Prime R2-300X4 is significantly more powerful than specified.

What input options does the Prime R2-300X4 offer?

The Prime R2-300X4 Amplifier offers various signal input options, including front low-level via 4 RCA connectors and front high-level via a 4-pin Molex connector. For the rear, low-level RCA and 4-pin Molex high-level inputs are also available. A 2/4 input switch allows you to choose between RCA and high-level input types, providing flexibility when connecting to different audio systems. This variety of signal inputs enables optimal integration into various vehicle audio systems.

What control options does the Amplifier have?

The Prime R2-300X4 is equipped with a top-mounted control panel that allows for easy access. Control features include an auto-sense bypass switch designed specifically for vehicles with RAP (Retained Accessory Power), as well as a 2/4 channel input selection switch. Additionally, there are fully adjustable 12 dB/octave high-pass and low-pass Butterworth filters for the front and rear. The variable input gain allows for precision in tuning the distortion rate. These control features provide further flexibility for individual audio adjustments.

What protection measures are integrated into the Prime R2-300X4?

The Rockford Fosgate Prime R2-300X4 offers protection against short circuits and overcurrent, ensuring long-term reliability. The amplifier is both CEA-2006 compliant and CE compliant, providing additional safety assurance. An integrated auto-sense bypass switch prevents malfunctions in vehicles with RAP. The aluminum die-cast heat sink structure effectively dissipates the generated heat, increasing operational safety. These safety mechanisms and standards significantly reduce the risk of operational disruptions.

How do I configure the amplifier's filter settings?

The Prime R2-300X4 features fully adjustable 12 dB/octave high-pass and low-pass Butterworth filters. The frequency range of the high-pass and low-pass filters is between 50 Hz and 250 Hz, on both the front and back. These filters are used to adjust the frequency transitions according to the preferences or requirements of the speaker systems. A control panel on the top of the amplifier allows easy access to these settings, enabling you to adjust or optimize the sound profile accordingly.

How is the Prime R2-300X4 amplifier designed to ensure efficient cooling?

The Rockford Fosgate Prime R2-300X4 is equipped with an aluminum die-cast heat sink that features powerful convective cooling. This design efficiently dissipates heat from the internal components and prevents overheating even under high power conditions. The aluminum structure ensures optimal heat distribution, supporting the longevity of the internal circuits. The passive cooling of the aluminum housing ensures that no additional airflow is required.

What are the dimensions of the Prime R2-300X4, and how do they affect the installation position in the vehicle?

The amplifier measures 4.9 cm in height, 17.3 cm in width, and 25.5 cm in depth. These compact dimensions make installation easier in many vehicles without taking up too much space. The low height also allows the amplifier to be installed under seats or in narrower spaces. However, installation should still be carefully planned, taking into account ventilation, access to the connections, and proximity to the power supply to achieve maximum performance and efficiency.

How is the power supply of the Prime R2-300X4 handled?

The Prime R2-300X4 amplifier requires an operating voltage of 9 to 16 VDC and draws a maximum current of 39 A at 13.8 V and full load. The recommended fuse rating is 60 A. An adequate cross-section of 20mm² for the power cable and 8mm² for the speaker cables is essential to minimize voltage losses and ensure maximum current supply. This sizing ensures that the amplifier can fully unleash its performance while being operated reliably.

What advantages does the Class-D circuit in the Prime R2-300X4 offer?

The reason for using a Class-D circuit in the Prime R2-300X4 is its efficiency. Class-D amplifiers convert input power much more effectively into output power than traditional amplifier classes. This results in lower heat generation, which saves energy and reduces the need for extensive cooling. The robust performance of the Prime R2-300X4 while maintaining a compact design makes it an ideal choice for high-performance car audio applications.

Is the Prime R2-300X4 compatible with common vehicle models?

Since the Prime R2-300X4 does not require specific vehicle brands, it can be made compatible with a variety of vehicle models. Important are the 4-channel wiring options and the flexible input signal processing via RCA or high-level inputs. Although no specific vehicle models are mentioned, the variable input sensitivity for low-level 150 mV to 4 V and for high-level 450 mV to 12 V facilitates broad compatibility with various audio systems in vehicles from different manufacturers.

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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