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Rockford Fosgate - Punch Series - P500X4D - 500 Watt Class-D Full Range 4-Channel Amplifier

This product has been discontinued

Rockford Fosgate - Punch Series - P500X4D - 500 Watt Class-D Full Range 4-Channel Amplifier



  • 500 Watt Class D Full Range 4-Channel Amplifier
  • Frequency Response 10Hz to 35kHz plus/minus 3dB
  • 12dB/octave crossover
  • 2/4 channel switch
  • Cast Aluminum Heatsink
  • SUPC: 1555930


Rated Power (RMS Continuous Power) 75 Watts x 4 at 4-Ohm, 125 Watts x 4 at 2-Ohm, 220 Watts x 2 at 4-Ohm Bridged
Total Power (Sum of Rated Power) 500 Watts RMS
No. of Channels 4
Frequency Response 10Hz to 35kHz plus/minus 3dB
Dynamic Power (PVC/PowerCube Measurement) 360 Watts x 2 at 4-Ohms 0degree Res, 640 Watts x 2 at 2-Ohms 0degree Res
Model Punch - P500X4D
Bridgeable Yes
Crossover Controls
Rear High-Pass (HP) 50Hz-500Hz 12dB/octave Butterworth
Front Low-Pass (LP) 50-500Hz 12dB/octave Butterworth
Front High-Pass (HP) 50Hz-500Hz 12dB/octave Butterworth
Rear Low-Pass (LP) 50-500Hz 12dB/octave Butterworth
Tone Controls
Circuit Topology Class Full Range Class D
Power Wire Gauge 4 AWG
Visual Indicators Power, Thermal, Protect
Front 0dB to plus18dB at 45Hz and/or
Signal Input Low level 2 RCA pair
Remote Controls Optional PEQ Remote Punch EQ (overrides built-in Punch EQ2 for rear channels only)
Speaker Wire Gauge 8 AWG to 18 AWG
Rear 0dB to plus18dB at 45Hz and/or
Signal Output n/a


Boost the performance of your motorcycle or car speakers with the Punch - P500X4D. This 500 Watt 4-channel full-range amplifier employs Topology Class D Architecture that significantly improves efficiency without compromise to the sound quality. The Punch - P500X4D has a Frequency Response from 10Hz - 35kHz plus/minus 3dB and it can pump out 500 watts at 1-ohm load without breaking a sweat. The perfect edition to the famous Rockford Fosgate Punch amplifier line-up, the Punch - P500X4D will deliver brute power and its D Class design will offer a higher level of efficiency along with a tri-stage protection that covers thermal, over-current and short circuits. The Punch - P500X4D also features an on-board Punch Bass that can supplement low frequency boom to give your music more impact and presence than a live stadium concert.


With the Punch - P500X4D amplifier, apart from the traditional 4-channel stereo mode, you can bridge both channels to create a high power 2-channel amp, or run stereo speakers on the front with subwoofers on the rear in 3-channel mode. The P500X4D is small but extremely efficient and features like the variable HP/LP crossover and built-in Punch EQ allow precise tuning of Bass frequencies, while the Pass-Thru RCA jacks provide flexibility as your system grows and keeping Y-adapters to a minimum. The included remote lets you control the amplifier's volume level from the front seat.


About the brand:

Rockford Fosgate is an American manufacturer of aftermarket and OEM car audio and In-Car Entertainment (ICE) products and accessories, as well as limited Pro Audio, and personal electronics items. The company markets currently three distinct product lines with the brand's name. Prime is entry level, Punch line is more in line with other enthusiast level products, and Power represents their high end products.

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