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Rectangular black metal car amplifier with silver Rockford Fosgate branding

Rockford Fosgate

Rockford Fosgate R2-500X1 Prime Series mono subwoofer car amplifier 500W RMS

SKU CH-5WJD-ATQDV MPN R2-500X1

Mono subwoofer amplifier delivers 500 watts RMS at 2 ohms with variable infrasonic filter 15-50Hz and crossover 50-250Hz

  • Amplifier channels1
  • Product typeAmplifiers
  • Key featuresPrime Series mono subwoofer amplifier
  • Product dimensions0 L × 0 W × 0 H inches
  • Highlights500 W
  • Delivers 500 watts RMS at 2 ohms for powerful bass
  • Variable 15-50Hz infrasonic filter protects subwoofer from damaging lows
  • Variable 50-250Hz crossover tailors frequency response to your system
  • Class-D design provides efficient amplification with less heat
  • Includes remote level control for convenient bass adjustment from the driver seat

Prime Series mono subwoofer amplifier

The Rockford Fosgate R2-500X1 is a Prime Series mono subwoofer amplifier built for car audio systems. It delivers 500 watts RMS x 1 at 2 ohms and 250 watts RMS x 1 at 4 ohms. The Class-D design meets CTA-2006 compliant performance standards. An included remote level control allows bass adjustment from the driver seat.

Built for single-subwoofer setups

This amplifier suits drivers who want dedicated low-frequency power for one subwoofer. The variable infrasonic filter (15-50Hz) and low-pass crossover (50Hz-250Hz) with 12dB/Oct Butterworth slope shape the output precisely. Buyers needing multi-channel amplification for full-range speakers or multiple subwoofers should look at a different amplifier topology.

Integration into a car audio build

The mono block requires 8-gauge power and ground leads with a 50-amp fuse, which are not supplied. Auto remote turn-on with a defeat switch simplifies the signal connection to the head unit. The Class-D efficiency reduces current draw, leaving more electrical headroom for other vehicle systems. Wiring, fuse, and mounting hardware must be sourced separately.

How it compares

Measured against everything we stock in Car Audio Amplifiers, at today’s prices. Recalculated every night.

Price $256.99
Pricier than about 54% of the 158 comparable items (median $225.49).

Specifications

Product
Brand nameRockford Fosgate
Model nameR2-500 × 1
Part numberR2-500 × 1
Product typeAmplifiers
Audio & video
Amplifier channels1
Size & build
Product dimensions0 L × 0 W × 0 H inches

Questions about this item

What gauge power and ground leads and fuse rating does the R2-500X1 require for installation?

The amplifier needs 8-gauge power and ground leads plus a 50-amp fuse, which are not included in the box.

Will the R2-500X1 turn on automatically with a factory head unit that lacks a dedicated remote wire?

Yes, the built-in auto remote turn-on detects signal on the speaker-level inputs and powers the amp without a separate remote lead.

How can I confirm the R2-500X1 is delivering its rated 500 watts RMS at 2 ohms after installation?

The amp is CTA-2006 compliant, meaning its 500 W RMS at 2 ohms rating is verified to the same industry standard used for all compliant car amplifiers.

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