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Rockford Fosgate R2-750X1

$380.00

Prime Series mono subwoofer amplifier — 750 watts RMS x 1 at 1 ohm

Give your sub the power it deserves. Rockford Fosgate’s Prime Series R2-750X1 amplifier delivers up to 750 watts RMS to power your subwoofer with clean, powerful bass. You can adjust the low-pass filter, infrasonic filter, and Rockford Fosgate’s famous Punch boost to get the best possible bass from the sub and enclosure in your vehicle.

This versatile Class-D amplifier provides ample power to drive even the most demanding subwoofers, while offering precise tuning capabilities to optimize performance in any installation.

Product Highlights

  • Type: Mono subwoofer amplifier (Prime Series)
  • Power Output:
    • 250 watts RMS × 1 at 4 ohms
    • 500 watts RMS × 1 at 2 ohms
    • 750 watts RMS × 1 at 1 ohm
  • CTA-2006 compliant: Standardized testing methodology

Key Features

  • Class-D Efficiency: Powerful yet energy-efficient design
  • Customizable Bass Control:
    • Variable low-pass filter (50-250 Hz, 12 dB/octave)
    • Variable subsonic filter (15-40 Hz, 12 dB/octave)
    • Variable Punch bass boost (0-18 dB at 45 Hz)
  • Easy Setup: C.L.E.A.N. gain system with clip lights ensures optimal sound quality
  • Convenience Features:
    • Included wired remote Punch Level Control
    • Auto remote turn-on capability
    • Compatible with both aftermarket and factory stereos via preamp and speaker-level inputs

Package Contents

  • Mono subwoofer amplifier
  • Wired Remote Level Control module with 16′ cable
  • Speaker input harness and connection hardware
  • Installation documentation and certification

Performance Specifications

  • RMS Power Output: 250 watts × 1 at 4 ohms
  • Power at 2 Ohms: 500 watts × 1
  • Power at 1 Ohm: 750 watts × 1
  • Minimum Impedance Unbridged: 1 ohm
  • Frequency Response: 20-250 Hz
  • THD at Rated RMS Power: 1%
  • Signal-to-Noise Ratio: 70 dB
  • Input Voltage: 14.4V
  • Fuse Rating: 120 amp (external)
  • Replaces Previous Model: Rockford Fosgate Prime R750-1D

Physical Specifications

  • Dimensions:
    • Width: 10-1/16 inches
    • Height: 2 inches
    • Depth: 7-3/4 inches
  • Mounting Options:
    • Vertical, horizontal, or inverted
    • Horizontal mounting recommended for best cooling

Amplifier Features

  • Amplifier Class: D
  • Built-in DSP: No
  • Fan Cooled: No
  • Remote Control: Yes (included)

Audio Controls

  • Gain Control: Rotary control (labeled 0-11)
    • Input sensitivity: 150mV-4V line level or 450mV-12V speaker level
  • Low-Pass Crossover:
    • Frequency range: 50-250 Hz
    • Slope: 12 dB/octave
    • Always engaged (cannot be bypassed)
  • Infrasonic Filter:
    • Variable: 15-40 Hz
    • Slope: 12 dB/octave
  • Bass Boost (Punch EQ):
    • Range: 0 to +18 dB
    • Frequency: 45 Hz

Remote Level Control

  • Function: Controls output level from dash or center console
  • Dimensions:
    • Width: 1.16″ (2″ including mounting flanges)
    • Height: 0.92″
    • Depth: 1.55″ (2.375″ including knob and wiring)
  • Cable Length: 16 feet (RJ-25 connector on both ends)

Connectivity

  • Power/Ground Terminals: Set-screw terminals (accommodate up to 4-gauge wire)
  • Remote Turn-On Terminal: Set-screw terminal (accommodates up to 8-gauge wire)
  • Speaker Terminals: Set-screw terminals (accommodate up to 8-gauge wire)
  • Input Options:
    • RCA inputs (balanced differential, nickel-plated)
    • Speaker-level inputs with included harness
  • Output Options: RCA pass-thru jacks (nickel-plated) for additional amplifiers
  • Auto Turn-on Switch: For DC offset detection with speaker-level inputs

Installation Requirements

  • External Fuse Required: 120-amp fuse placed within 18″ of battery
  • No onboard fuse
  • Recommended Wiring: 4-gauge power and ground wires
  • CEA-2006 Specifications:
    • Power Output: 250 watts RMS × 1 into 4Ω
    • Signal to Noise Ratio: >70 dBA (measured at 1 watt into 4Ω)

Package Contents (Detailed)

  • Mono subwoofer amplifier
  • Wired Remote Level Control module
  • 16′ Remote cable (RJ-25 connector on both ends)
  • One 7″ Speaker input harness
  • 3mm Allen Hex key
  • Hardware:
    • Four 3/4″ screws
    • Two 1/2″ screws
    • 5 flat washers
    • 1 nut
  • Documentation:
    • Installation and Operation instructions (English/French/Spanish/German/Italian)
    • Certificate of Performance
    • Rockford Fosgate contact information
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