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This Power 500 Watt Class‑bd Constant Power Amplifier delivers very high, tight and clear low end while running cool and reliably; ideal for listeners who want powerful, low‑distortion bass but requires proper gain setup and robust speaker/sub matching.
Buyer confidence
88%Highlights
- 2-Year Warranty
- 24dB/octave crossover
- MOSFET power supply
- RCA pass-thru outputs
Key specs
Full specs- Number of Channels
- 1
- Total Power (Sum of Rated Power)
- 500 Watts RMS
- Rated Power (RMS Continuous Power)
- 300 Watts x 1 @ 4-Ohm 500 Watts x 1 @ 2-Ohm 500 Watts x 1 @ 1-Ohm
- Dynamic Power (PVC/PowerCube®)
- 328 Watts x 1 @ 4-Ohms 537 Watts x 1 @ 2-Ohms 707 Watts x 1 @ 1-Ohm
- Bridgeable
- No
- Frequency Response
- 20Hz to 250Hz +/- 0.5dB
- Input Sensitivity
- 150 mV to 4 V
- Circuit Topology Class
- Class BD
Key specs
Full specs- Number of Channels
- 1
- Total Power (Sum of Rated Power)
- 500 Watts RMS
- Rated Power (RMS Continuous Power)
- 300 Watts x 1 @ 4-Ohm 500 Watts x 1 @ 2-Ohm 500 Watts x 1 @ 1-Ohm
- Dynamic Power (PVC/PowerCube®)
- 328 Watts x 1 @ 4-Ohms 537 Watts x 1 @ 2-Ohms 707 Watts x 1 @ 1-Ohm
Highlights
Overview- 2-Year Warranty
- 24dB/octave crossover
- MOSFET power supply
Review highlights
Based on customer reviewsRockford Fosgate Power 500W — clean, hard‑hitting bass for serious subs
This Power 500 Watt Class‑bd Constant Power Amplifier delivers very high, tight and clear low end while running cool and reliably; ideal for listeners who want powerful, low‑distortion bass but requires proper gain setup and robust speaker/sub matching.
What buyers praise
- Very high output—drives large subs and produces strong, physical bass
- Clean, tight bass with low distortion even at high levels
What to watch for
- Extremely powerful—can be overkill for casual setups or small subs
Overview
A 500-watt mono Class-BD amplifier tuned specifically for subwoofers. The proprietary Constant Power configuration increases usable output across impedance loads and the frequency response is optimized for bass.
Best for
- Dedicated car subwoofer systems
- Compact or under‑seat subwoofer installations
- Applications requiring a mono amplifier optimized for low-frequency reproduction
Key points
- 500 Watt mono output (Class-BD)
- Constant Power design — up to 25% more power across impedance loads
- Frequency response optimized exclusively for subwoofers
- Balanced Differential Inputs for reduced noise
- Punch Bass EQ and DSM
- CTA-2006 compliant
Fit and use
Intended as a dedicated subwoofer amplifier. The design supports use in compact locations (including under‑seat) and can drive multiple subwoofers — for example, it can be used to power two 4-Ohm DVC subwoofers. It is not optimized for full-range speakers.
What to know
Designed exclusively for subwoofers; not intended as a full-range amplifier. Constant Power configuration delivers increased output consistency across different impedance loads. CTA-2006 compliance indicates measured performance under standardized conditions. Balanced differential inputs help minimize system noise; co…
Highlights
Key features
- 2-Year Warranty
- 24dB/octave crossover
- MOSFET power supply
- RCA pass-thru outputs
- 4 Gauge power/ground connectors
- Infrasonic filter
- Audiophile grade speaker connections
- MOSFET output stage
- MEHSA3
- TO-247 MOSFETs
- CTA-2006 Compliant
- Balanced Differential Inputs
Technologies
MEHSA3
MEHSA3 reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life
TO-247 MOSFETs
The MOSFET transistor is the best type of device to use when building a high quality mobile amplifier. The Power
CTA-2006 Compliant
Power ratings on Rockford Fosgate amplifiers conform to CTA-2006 industry standards. These guidelines mean your
Balanced Differential Inputs
Differential input circuitry measures the voltage of both the (+) and (-) input signal. The circuitry subtracts
Patent: 6,097,249 RE40,550
Class-BD
Rockford Fosgate bd topology is a revolutionary patented design (#6,097,249), integrating a technology that is
Punch Bass EQ
In the early 70's, Jim Fosgate studied the acoustical properties of automobiles. Utilizing a real-time analyzer
DSM
DSM - An industry-leading manufacturing process, DSM utilizes high-speed robotics, high-quality 1% tight-tolerance
Engineered In The USA
[av• uh•tahr -noun] 1. an embodiment or personification, as of a principle, attitude, or view of life 2. a
Patent: 7,994,857
Constant Power
Music and speakers have a dynamic relationship. As the frequency of music varies, so does the impedance of the
Specs
Specifications
28
| Number of Channels | 1 |
| Total Power (Sum of Rated Power) | 500 Watts RMS |
| Rated Power (RMS Continuous Power) | 300 Watts x 1 @ 4-Ohm 500 Watts x 1 @ 2-Ohm 500 Watts x 1 @ 1-Ohm |
| Dynamic Power (PVC/PowerCube®) | 328 Watts x 1 @ 4-Ohms 537 Watts x 1 @ 2-Ohms 707 Watts x 1 @ 1-Ohm |
| Bridgeable | No |
| Frequency Response | 20Hz to 250Hz +/- 0.5dB |
| Input Sensitivity | 150 mV to 4 V |
| Circuit Topology Class | Class BD |
| Efficiency (average) | 86.2% @ 4-Ohm 82.3% @ 2-Ohm 73.4% @ 1-Ohm |
| Total Harmonic Distortion (THD+Noise) | 4-Ohm: <1.0% 2-Ohm: <1.0% 1-Ohm: <1.0% |
| Signal Input | Low level: 1 RCA pair |
| Signal Output | Low Level: 1 RCA pair |
| Tone Controls | Bass: 0dB to +18dB @ 45Hz |
| Crossover Controls | Low-Pass (LP): 35-250Hz 24dB/Octave Butterworth Infrasonic Filter: -3dB @ 28Hz 12dB/Octave |
| Remote Controls | Optional Remote Punch Bass EQ (overrides built-in Punch Bass EQ) |
| Visual Indicators | Power Thermal Protect |
| Power Wire Gauge | 4 AWG |
| Power Input Connector | Block |
| Speaker Wire Gauge | 8 AWG to 18 AWG |
| Speaker Output Connector | Screw terminal barrier strip |
| Cooling | Convection |
| Operating Voltage | 9 - 16 VDC |
| Recommended Fuse (not included) | 80 A |
| Average Current Draw (13.8V Music) | 35 A |
| Max. Current Draw (13.8V Sinewave) | 70 A |
| Suggested Alternator | 75 A |
| Dimensions (H x W x D) | 2.14 x 8.14 x 11.41 (in) 5.42 x 20.68 x 28.97 (cm) |
| Shipping Weight | 13.39 Lbs. (6.07 Kg.) |
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Installation resources
Wiring diagrams
11
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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