R2-500X4

The Rockford Fosgate R2-500X4 is a powerful 4-channel amplifier from the PRIME R2 series that combines high output power, compact dimensions, and versatile adjustment options. Thanks to modern Class D technology, the amplifier delivers efficient amplification with minimal heat generation and is suitable for both upgrading factory sound systems and building custom car audio setups.

With an output power of 4 x 125 watts RMS into 2 ohms, the amplifier offers sufficient power reserves for demanding speaker systems. In bridge mode, up to 2 x 250 watts RMS at 4 ohms is available. The built-in high-pass and low-pass filters allow for flexible adaptation to different speaker configurations.

The integrated C.L.E.A.N. technology makes it easier to set the input sensitivity correctly and helps prevent signal distortion. Thanks to balanced differential inputs, high-level inputs, and an automatic power-on function, the R2-500X4 can also be easily integrated into existing OEM sound systems.

A rugged aluminum housing with efficient heat dissipation and comprehensive protective circuits ensure reliable operation.

Technical Specifications

General Characteristics

• Manufacturer: Rockford Fosgate

• Model: R2-500X4

• Series: PRIME R2

• Amplifier Type: 4-Channel Power Amplifier

• Amplifier Technology: Class D

• Number of channels: 4

• Bridgeable: Yes, to 2 channels

• Minimum impedance (stereo): 2 ohms

• Minimum impedance (bridged): 4 ohms

• Housing: Aluminum heat sink

• Color: Black
  
  

RMS Output Power at 14.4 Volts

• 4 ohms: 4 x 75 watts RMS

• 2 ohms: 4 x 125 watts RMS

• 4 ohms bridged: 2 x 250 watts RMS

• Maximum total RMS power: 500 watts

• Performance specifications in accordance with CEA-2006
  
  

Crossover Networks and Sound Settings

• High-pass filter (HPF): 50–250 Hz, continuously adjustable

• Low-pass filter (LPF): 50–250 Hz, continuously adjustable

• All-Pass Mode (AP): Yes

• Filter slope: 12 dB/octave

• Filter characteristic: Butterworth

• Separate crossovers for front and rear channels

• Adjustable Input Sensitivity

• C.L.E.A.N. System to Support Proper Level Adjustment
  
  

Electrical and Acoustic Properties

• Frequency response: 20 Hz – 20,000 Hz

• Signal-to-noise ratio: over 80 dB (CEA-2006)

• RCA input sensitivity: 150 mV – 4 V

• High-level input sensitivity: 450 mV – 12 V

• Operating voltage: 9–16 V DC

• Recommended external battery fuse: 80 A

• Balanced differential inputs to reduce noise

• Short-Circuit and Overcurrent Protection

• Thermal Protection Circuit

• Rollback protection for power control under critical operating conditions
  
  

Connections and Features

• RCA (low-level) inputs

• High-level inputs for factory-installed radios

• Automatic power-on function via input signal

• Automatic power-on feature can be disabled

• Variable Gain Control

• C.L.E.A.N. Setup Guide

• Top-mounted control panel for amplifier settings

• Connection for remote power-on signal

• Screw terminals for power supply and speakers
  
  

Dimensions

• Length: 255 mm

• Width: 173 mm

• Height: 49 mm
  
  

What's Included

• 1 Rockford Fosgate R2-500X4 4-Channel Amplifier

• Installation Accessories

• User and Installation Manual