PM500X1bd

The Rockford Fosgate PM500X1bd is a powerful and efficient 1-channel marine amplifier designed specifically to drive subwoofers and low-midrange speakers. Thanks to its highly efficient Class bd technology, this monoblock delivers powerful bass reproduction with up to 500 watts RMS at 1 ohm.

Thanks to its robust 1-ohm design, the amplifier is also suitable for demanding subwoofer configurations. The built-in C.L.E.A.N. technology enables precise level adjustment and helps prevent distortion caused by overdrive. A variable low-pass filter, an infrasonic filter, and the adjustable Punch Bass EQ offer extensive options for customizing the sound.

Designed for use in marine environments, the PM500X1bd features specially coated circuit boards, corrosion-resistant stainless steel components, and a rugged aluminum heat sink. Comprehensive protection circuits ensure reliable operation.

Technical Specifications

General Characteristics

• Amplifier type: 1-channel mono amplifier

• Series: Rockford Fosgate Punch Marine

• Amplifier Technology: Class bd

• Number of channels: 1

• Applications: Marine audio, subwoofers, and low-midrange drivers

• Minimum speaker impedance: 1 ohm

• Bridge Connection: Not Possible

• Frequency range: 20–250 Hz

• Operating voltage: 9–16 V DC

• Maximum current draw according to the manufacturer: 80 A

• Efficiency: approx. 86% at 4 ohms
  
  

RMS Output Power

• 1 × 150 watts RMS at 4 ohms

• 1 × 300 watts RMS at 2 ohms

• 1 × 500 watts RMS at 1 ohm

• Performance specifications at 14.4 V operating voltage
  
  

Filters and Sound Settings

• Low-pass filter: 50–250 Hz, continuously adjustable

• Low-pass filter slope: 12 dB/octave

• Filter characteristic: Butterworth

• Infrasonic filter: 28 Hz

• Infrasonic filter slope: 12 dB/octave

• Punch Bass EQ: 0 to +18 dB at 45 Hz

• Adjustable input sensitivity: 150 mV to 12 V

• C.L.E.A.N. Technology for Detecting Overdrive

• Optional PLC2 bass remote control with clipping indicator
  
  

Audio Characteristics

• Total Harmonic Distortion plus Noise (THD+N): less than 1.0% at 4, 2, and 1 ohms

• Signal-to-noise ratio: over 80 dB, relative to 1 watt

• Signal-to-noise ratio: over 100 dB, relative to the rated power

• Input resistance: 20 kOhm

• Channel separation: Not relevant for mono amplifiers

• Damping factor: over 300
  
  

Connections and Features

• RCA inputs: 1 pair

• RCA outputs: 1 pair, signal pass-through

• High-level input for speaker signals

• Automatic power-on function via a high-level signal

• Remote Connection

• Connection port for optional PLC2 bass remote control

• Protected, top-mounted control panel

• Power-on delay to prevent noise interference
  
  

Protective Features and Workmanship

• Short-Circuit Protection

• Overcurrent Protection

• Sturdy die-cast aluminum heat sink

• Two-component epoxy coating for printed circuit boards used in marine applications

• Corrosion-Resistant Stainless Steel Components

• Marine-grade construction
  
  

Dimensions

• Width: 197 mm

• Height: 61 mm

• Length: 280 mm
  
  

What's Included

• 1 × Rockford Fosgate PM500X1bd Marine Mono Amplifier

• 1 × User and Installation Manual

• 1 × Individual Performance Certificate