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The Rockford Fosgate Prime 750 Watt Mono Amplifier delivers strong, clean subwoofer power in a small package and pairs especially well with P2/P3 subs; installation can require extra care due to terminals, orientation, and a generic manual.
Buyer confidence
87%Highlights
- 1 Year Warranty
- Variable Infrasonic Filter
- Class-D Topology
- Cast aluminum heat sink
Key specs
Full specs- Number of Channels
- 1
- Total Power (Sum of Rated Power)
- 750 Watts
- Rated Power (RMS Continuous Power)
- 250 Watts x 1 @ 4Ω 500 Watts x 1 @ 2Ω 750 Watts x 1 @ 1Ω
- Dynamic Power (PVC/PowerCube®)
- 300 Watts x 1 @ 4Ω 545 Watts x 1 @ 2Ω 830 Watts x 1 @ 1Ω
- Bridgeable
- No
- Frequency Response
- 20 Hz - 250 Hz
- Input Sensitivity
- Low-Level: 150 mV - 4 V High-Level: 450 mV - 12 V
- Circuit Topology Class
- Class-D
Key specs
Full specs- Number of Channels
- 1
- Total Power (Sum of Rated Power)
- 750 Watts
- Rated Power (RMS Continuous Power)
- 250 Watts x 1 @ 4Ω 500 Watts x 1 @ 2Ω 750 Watts x 1 @ 1Ω
- Dynamic Power (PVC/PowerCube®)
- 300 Watts x 1 @ 4Ω 545 Watts x 1 @ 2Ω 830 Watts x 1 @ 1Ω
Highlights
Overview- 1 Year Warranty
- Variable Infrasonic Filter
- Class-D Topology
Review highlights
Based on customer reviewsPunchy, compact mono amp with clean, 1Ω-stable power
The Rockford Fosgate Prime 750 Watt Mono Amplifier delivers strong, clean subwoofer power in a small package and pairs especially well with P2/P3 subs; installation can require extra care due to terminals, orientation, and a generic manual.
What buyers praise
- Big, clean bass power—stable at 1Ω and often reads above rated watts
- C.L.E.A.N. IN/OUT, punch EQ and protection lights simplify tuning and monitoring
What to watch for
- Manuals are generic/brief—bridging and some wiring details may require online help
Overview
The Prime R2-750X1 is a 750 watt, Class-D mono amplifier designed for subwoofer applications. It combines high efficiency with Rockford Fosgate technologies — including C.L.E.A.N. circuitry, a P.O.W.E.R. supply, Punch EQ and a variable infrasonic filter — for tunable low-frequency performance.
Best for
- Driving single subwoofer or mono subwoofer systems
- Environments where electrical efficiency is important
- Integration with factory or custom aftermarket car audio systems
Key points
- 750 watt Class-D mono topology for efficient subwoofer power
- Operates at 4Ω, 2Ω or 1Ω mono for flexible subwoofer wiring
- P.O.W.E.R. Supply: increases available power as vehicle voltage rises
- C.L.E.A.N. circuitry with LEDs to simplify gain setup
- Integrated Punch EQ to correct acoustic deficiencies and enhance bass response (up to 3X bass)
- Variable infrasonic filter and remote level control for precise bass tuning
Fit and use
Use the R2-750X1 as a mono subwoofer amplifier in a car audio system. Configure speaker load at 4Ω, 2Ω or 1Ω to match your subwoofer wiring. Use the C.L.E.A.N. LEDs when setting gain, engage Punch EQ to address cabin acoustics, and adjust the infrasonic filter and remote level control to fine-tune low-frequency output.
What to know
This amplifier emphasizes efficiency to reduce demand on the vehicle electrical system. C.L.E.A.N. circuitry assists with gain adjustments to minimize distortion and noise. The unit follows Rockford Fosgate’s Prime Series design intent: reliable performance and straightforward setup for both factory and aftermarket sy…
Highlights
Key features
- 1 Year Warranty
- Variable Infrasonic Filter
- Class-D Topology
- Cast aluminum heat sink
- Features C.L.E.A.N. Set-up
- Balanced Differential Inputs with RCA Pass Through Outputs
- High Level Input Capable
- Auto-Sense bypass switch for vehicles with RAP (Retained Accessory Power)
- Variable Input Gain adjustment level
- Continuously Variable On Board Punch EQ
- Top Mounted Control Panel
- Short Circuit & Over Current Protection
Technologies
P.O.W.E.R.
Power supply circuit design that allows the amplifier to increase output power as voltage increases.
Class-D
High efficiency amplifier design that reduces current consumption from the charging system.
Patent: 8,712,066
C.L.E.A.N. Technology
Time and sophisticated test equipment have been replaced, with Rockford’s integrated level setting technology
CTA-2006 Compliant
Power ratings on Rockford Fosgate amplifiers conform to CTA-2006 industry standards. These guidelines mean your
MEHSA 4 (Maximum Efficiency Heat Sink Application)
MEHSA4 (Maximum Efficiency Heat Sink Application - gen. 4) is a proprietary process that yields a better heat
Balanced Differential Inputs
Differential input circuitry measures the voltage of both the (+) and (-) input signal. The circuitry subtracts
NOMAD
NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and ...
Rollback Protection
During demanding musical conditions, the amplifier can dynamically reduce demand to prevent stress on the output
CE Compliant
This product fulfills all essential safety and environmental requirements as defined in the European Directives
Specs
Specifications
24
| Number of Channels | 1 |
| Total Power (Sum of Rated Power) | 750 Watts |
| Rated Power (RMS Continuous Power) | 250 Watts x 1 @ 4Ω 500 Watts x 1 @ 2Ω 750 Watts x 1 @ 1Ω |
| Dynamic Power (PVC/PowerCube®) | 300 Watts x 1 @ 4Ω 545 Watts x 1 @ 2Ω 830 Watts x 1 @ 1Ω |
| Bridgeable | No |
| Frequency Response | 20 Hz - 250 Hz |
| Input Sensitivity | Low-Level: 150 mV - 4 V High-Level: 450 mV - 12 V |
| Circuit Topology Class | Class-D |
| Total Harmonic Distortion (THD+Noise) | 4Ω: <1.0% 2Ω: <1.0% 1Ω: <1.0% |
| Signal Input | Low-Level: 2 RCA High-Level: 4-Pin Molex |
| Signal Output | Low-Level: 2 RCA (Pass-Thru active with RCA or Hi-Level input) |
| Tone Controls | 0 to +18 dB @ 45 Hz |
| Crossover Controls | Low-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth Infrasonic: 15 Hz - 40 Hz @ 12dB/Octave Butterworth |
| Remote Controls | Yes |
| Visual Indicators | POWER (Blue) / PROTECT (Red) C.L.E.A.N. IN (Red) C.L.E.A.N. OUT (Blue/Red) |
| Power Wire Gauge | 4 AWG |
| Power Input Connector | Compression Terminal Block |
| Speaker Wire Gauge | 8 AWG |
| Speaker Output Connector | Compression Terminal Block |
| Cooling | Convection |
| Operating Voltage | 9 - 16 VDC |
| Recommended Fuse (not included) | 120 A |
| Max. Current Draw (13.8V Sinewave) | 71 A |
| Dimensions (H x W x D) | 1.9" x 6.8" x 10.1" (4.9 cm x 17.3 cm x 25.5 cm) |
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Installation resources
Wiring diagrams
10
Wiring Diagram #1
Source: Rockford Fosgate
Wiring Diagram #2
Source: Rockford Fosgate
Wiring Diagram #3
Source: Rockford Fosgate
Wiring Diagram #4
Source: Rockford Fosgate
Wiring Diagram #5
Source: Rockford Fosgate
Wiring Diagram #6
Source: Rockford Fosgate
Wiring Diagram #7
Source: Rockford Fosgate
Wiring Diagram #8
Source: Rockford Fosgate
Wiring Diagram #9
Source: Rockford Fosgate
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