Rockford Fosgate Prime R2-500X4 4-Channel Amplifier
Key features
- Amplifier channels: 4
- RMS per channel at 4 ohms: 75 W
- RMS per channel at 2 ohms: 125 W
- Frequency response: 20 Hz–20 kHz
- Input sensitivity: 150 mV–4 V low-level; 450 mV–12 V high-level
- Crossover: variable 50–250 Hz high-pass/low-pass, 12 dB/octave
Rockford Fosgate Prime R2-500X4 4-Channel Amplifier is backordered and will ship as soon as it is back in stock.
Rockford Fosgate Prime R2-500X4 4-Channel Amplifier is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
The Rockford Fosgate Prime R2-500X4 is a four-channel Class-D car amplifier for powering a front-and-rear speaker system or a two-speaker setup with rear fill. Its 500W total rated output, flexible inputs, and adjustable crossovers give you control over how the system connects and plays.
This third-generation Prime Series amplifier accepts low-level or high-level signals and offers channel-by-channel crossover choices. Its compact chassis measures 1.9" × 6.8" × 10.1".
Key Features & Benefits
- Four-channel Class-D design: Configure power for multiple speakers while using an efficient amplifier design.
- Flexible power ratings: Choose between 4Ω and 2Ω loads for the listed per-channel RMS output.
- Adjustable crossovers: Set front and rear high-pass or low-pass filters to shape the signal for your speakers.
- Factory and aftermarket input options: Select 2/4 input operation and connect using low-level RCA or high-level Molex inputs.
- Cast aluminum heat sink: Convection cooling and a top-mounted control panel support practical in-vehicle installation.
- Protection and indicators: Short-circuit and over-current protection, rollback protection, and POWER/PROTECT indicators provide system status information.
Technical Specifications
| Brand and model | Rockford Fosgate Prime R2-500X4 |
|---|---|
| Series generation | 3rd generation Prime Series |
| Amplifier type | 4-channel, Class-D |
| Total power | 500W (sum of rated power) |
| RMS power per channel | 75W × 4 @ 4Ω; 125W × 4 @ 2Ω |
| Bridged/Mono power | 90 Watts × 4 @ 4Ω; 160 Watts × 4 @ 2Ω; 300 Watts × 2 @ 4Ω |
| Frequency response | 20 Hz–20 kHz |
| Crossover type | Fully adjustable 12 dB/octave Butterworth crossovers |
| Front crossover settings | Front High-Pass (50–250 Hz); Front Low-Pass (50–250 Hz) |
| Rear crossover settings | Rear High-Pass (50–250 Hz); Rear Low-Pass (50–250 Hz) |
| Additional crossover setting | All-Pass |
| Input selection | 2/4 Input selection |
| Front inputs | Front Low-Level (4 RCA); Front High-Level (4-Pin Molex) |
| Rear inputs | Rear Low-Level (4 RCA); Rear High-Level (4-Pin Molex) |
| Signal path | Balanced differential inputs with RCA pass-through |
| Protection | Short Circuit & Over Current Protection; Rollback Protection |
| Indicators and controls | POWER (Blue) / PROTECT (Red) indicators; C.L.E.A.N. IN/OUT |
| Heat sink and cooling | Cast aluminum heat sink with convection cooling |
| Control panel | Top-mounted |
| Operating voltage | 9–16 VDC |
| Power input | 4 AWG |
| Speaker output | 8 AWG |
| Dimensions | 1.9" × 6.8" × 10.1" |
| Compliance | CTA-2006 Compliant; CE Compliant |
| Warranty | 1 Year Warranty |
Why Choose This Product?
The R2-500X4 gives you several ways to build around four amplifier channels. Use the listed 4Ω or 2Ω RMS ratings to assess whether its output suits your speaker loads, or consider the listed bridged/mono ratings for a two-channel configuration.
Front and rear crossover controls let you tailor each channel’s range, including filtering bass from midrange speakers. The 20 Hz–20 kHz frequency response covers a full-range signal path, while the RCA pass-through supports signal routing through the system.
Installation & Compatibility Notes
The amplifier is described for factory or aftermarket systems and includes both low-level RCA and high-level 4-Pin Molex input options. Confirm your source unit’s output type, speaker loads, and available mounting space before planning an installation.
Allow for the listed 1.9" × 6.8" × 10.1" dimensions. The amplifier operates at 9–16 VDC and specifies 4 AWG power input and 8 AWG speaker output.
Frequently Asked Questions
What is the RMS output per channel?
The listed ratings are 75W × 4 at 4Ω and 125W × 4 at 2Ω.
What bridged or mono power ratings are listed?
The description lists 90 Watts × 4 at 4Ω, 160 Watts × 4 at 2Ω, and 300 Watts × 2 at 4Ω. Match your system design to the applicable load and rating.
Can I connect this amplifier to a factory radio?
It offers front and rear high-level 4-Pin Molex inputs as well as low-level RCA inputs for system connection. Check which signal connections your radio provides.
Can I adjust the crossover settings?
Yes. The front and rear high-pass and low-pass settings are adjustable from 50–250 Hz, with an All-Pass setting also listed.
What space and electrical requirements should I plan for?
Allow for the 1.9" × 6.8" × 10.1" dimensions and the listed 9–16 VDC operating range, 4 AWG power input, and 8 AWG speaker output.
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