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Rockford Fosgate P500X4D

500W RMS 4-Channel Class D Punch Series High Efficiency Amplifier

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Class D with a Punch

The new 2011 Rockford Fosgate P500X4D 4-channel amplifier is the perfect solution when looking to amplify some speakers or even some entry level subwoofers at the bridged impedance. Low-level and high-level inputs will allow the installation of this amplifier into any car system, whether you have a factory installed system or aftermarket system, making it extremely versatile. The variable high and low-pass filters allow for complete tuning of your music to meet your desired specifications. The 3-way protection circuitry will protect your amplifier from thermal,overload, and speaker short malfunctions. Its CEA-2006 compliance gives you piece of mind by guaranteeing that you will receive the listed power rating each and every single time. So when searching for the proper 4-channel amplifier, the Rockford Fodgate P500X4D is the answer to your search.

  • Punch Series Class D Full Range 4-Channel Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 75 watts x 4 chan.
    • 2 ohms: 125 watts x 4 chan.
    • Bridged, 4 ohms: 220 watts x 2 chan.
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Punch EQ 2 variable bass boost (0 to +18 dB bass boost at 45 Hz)
  • Soft Start Turn-on
  • 4/3/2 channel operation
  • Speaker-level (high-level) inputs
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-Way System Protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty cast aluminum alloy heatsink for extreme heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Variable high-pass filter (50-500 Hz, 12 dB/octave)
  • Variable low-pass filter (50-500 Hz, 12 dB/octave)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-20,000 Hz
  • 60A in-line fuse is recommended
  • Dimensions: 10-3/4"L x 8"W x 2-1/4"H
  • 4-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • 1-year SonicElectronix.com warranty
Power Specifications - Full Range Channels
RMS Power @ 4 ohms 75 watts x 4 channels
RMS Power @ 2 ohms 125 watts x 4 channels
RMS Power @ 1 ohm Not Stable
Bridged RMS Power 250 watts x 2 channels
Amplifier Specifications
Amplifier Class D
Number of Channels 4
Total RMS Power Output 500 watts
Maximum Input Gauge Size 4 AWG
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged 4 ohms
Speaker Level Inputs Yes
Preamp Outputs 1 pair
Built-in Crossover Low-pass (LP)
High-pass (HP)
Full (AP)
High-Pass Crossover Frequency 50 - 500 Hz
Low-Pass Crossover Frequency 50 - 500 Hz
Signal-to-Noise Ratio 85 dB
Channel Separation 50 dB
Bass Boost 0 - 18 dB
Bass/Gain Remote No
Fan Cooled No
Fuse Rating In-line 60A x 1 Recommended
CEA-2006 Compliant Yes
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Sonic Electronix
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Amplifier Wiring Kits
Get the wires you need to properly install and power your car amp.
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NVX XKIT44 NVX XKIT44
4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire
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Stacking Hardware & Strapping Accessories
Use this stacking hardware to mount multiple amplifiers together for a clean, professional installation. Maximize your output with these accessories to strap your amplifiers together.
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XIX2025 Strapping RCA XIX2025 Strapping RCA
0.25 Meter (0.86 ft) Hyper-Flex RCA cable w/ Serpentine-Cut Nickel Plated Connectors
$13.99
Bass Remote Control
Control the volume level of your bass and amplifier from the front of the vehicle.
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Universal Remote Level Bass Control Universal Remote Level Bass Control
Controls bass level and frequency via RCA/Interconnect connectors on any amp.
$13.99
Small Universal Remote Level Bass Control Small Universal Remote Level Bass Control
The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.
$14.99
Speaker Wire
Improve the sound quality by delivering more power when replacing your factory wiring. High quality speaker will maximize your amplifier investment and system performance.
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NVX XWS1225 Speaker Wire NVX XWS1225 Speaker Wire
25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire
$39.99
NVX XWS1250 Speaker Wire NVX XWS1250 Speaker Wire
50 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire
$29.99
Kicker XW1220 Speaker Wire Kicker XW1220 Speaker Wire
12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install
$34.95
StreetWires SCP1215BL - 12 AWG Speaker Wire StreetWires SCP1215BL - 12 AWG Speaker Wire
12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction
$24.99
RCA Interconnects
You will need a good set of RCA interconnect cables to connect your amplifier to your head unit. Using high quality cables ensure the best sound possible by reducing unwanted noise interference, providing tight contacts, and utilizing the latest in cable technology.
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NVX XIV45 4-Channel RCA Audio Interconnect Cable NVX XIV45 4-Channel RCA Audio Interconnect Cable
5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology
$23.99
NVX XIX45 X-Series RCA Interconnect Cable NVX XIX45 X-Series RCA Interconnect Cable
16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology
$44.99
StreetWires ZN9 Series Interconnect Cable StreetWires ZN9 Series Interconnect Cable
16.4 ft. of 4-Channel RCA Cable with Rhodium-plated contacts and ZeroNoise construction for clear signal transfer!
$99.99
Capacitors
Capacitors store energy for the amplifier to use on demand, thereby assisting in the elimination of dimming lights during peak power surges during use.
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e2 ECAP1 by Scosche - Mid-Level 1 Farad e2 ECAP1 by Scosche - Mid-Level 1 Farad
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Rockford Fosgate RFC1D - Top of the Line 1 Farad Rockford Fosgate RFC1D - Top of the Line 1 Farad
Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max
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Installation, Tools & Accessories
With our professional install card, you can have your amp installed by a pro near you, or you can purchase tools and do the install yourself.
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StreetWires FB4 StreetWires FB4
4 AWG / 4 Gauge Firewall Bushing
$7.99
Kicker DB1448 (09DB1448) - Top of the Line! Kicker DB1448 (09DB1448) - Top of the Line!
Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs
$24.95
Professional Installation for your Car Power Amplifier Professional Installation for your Car Power Amplifier
Covers labor charges through our professional installer network.
$89.99
Testing and Performance
Optimize your system's performance with testing tools such as SPL meters, bass test discs and more!
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Scosche SPL Meter SPL1000F Scosche SPL Meter SPL1000F
Handheld boomSTICK measures your SPL range from 60 to 135 dB
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AutoSound 2000 CD-104 AutoSound 2000 CD-104
The ultimate amplifier level setting disc used for evaluation of audio components
$12.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99

Product Summary

Manufacturer: Rockford Fosgate
Model number: P500X4D
UPC: 780687339869
Weight: 8.50 lbs
Internal SKU: p500x4d
Internal product ID: 34754