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Rockford Fosgate PM100X1 Punch Marine 100 Watt Full-Range Mono Amplifier – Pair

Brand: Rockford Fosgate
Model Number: PM100X1K
UPC: 780687345204
Rockford Fosgate
Model Number: PM100X1K
UPC: 780687345204

Rockford Fosgate PM100X1 Punch Marine 100 Watt Full-Range Mono Amplifier – Pair

  • CEA-2006 compliant
  • Patent-pending BTL “FreeLoad” technology requires no separate positive power lead
  • Selectable high-pass filter (60, 80, or 100 Hz at 12 dB/octave)
  • Input impedance switch for low-impedance-capable receivers
  • IPX6 water intrusion rated

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Product Description

Features & Specifications



Rockford Fosgate PM100X1 Punch Marine 100 Watt Full-Range Mono Amplifier – Pair

The PM100X1 is a 100 Watt dynamic power mono amp that works with the DC and AC voltages found on most radio speaker outputs. This design eliminates the need for a B+ cable when connecting to a speaker wire. It also provides a safe load to the radio amp circuit, reducing radio wear and tear. It’s perfect for OEM and aftermarket radio integration. Mobile, motorsport, and marine applications are all possible with the conformal coated PCB.

The PM100X1 amplifier is a one-of-a-kind amplifier that incorporates our patent-pending BTL technology. This single channel amplifier uses the radio’s speaker output to provide not only the audio signal but also the power to run the unit. This is accomplished using a combination of the common DC offset voltage and the audio AC signal itself.

It uses the DC offset voltage for both turn on and primary amplification power at first. The amplifier begins to share the power load between the DC and AC signals as the volume and output power demand increase. Once a high volume is reached, the AC signal provides the majority of the amplifier’s power, which is supplemented by its internal storage bank.

This design enables it to charge its capacitive bank on the AC signal wave’s negative side, which is essentially unused power. It also puts no more strain on the radio than a standard 2 or 4 ohm speaker, ensuring that the radio amplifier circuit is protected from low impedance conditions. This design enables the amplifier to be connected to a radio with a rated output of 20 watts and dynamically produce up to 100 watts. A 2/ 4 ohm input switch is also included to match the amplifier to the radio circuit’s output impedance rating. We include a selectable high pass crossover with settings at 60, 80, and 100Hz for speaker protection.

When there isn’t enough DC voltage to power the amp at turn on, an extra B+ wire is included, which can be connected to other low-current circuits nearby. Because of this design, the amplifier can be used for OEM or aftermarket upgrades without having to use physically larger amplifiers because it can be hidden in the vehicle’s dash or doors. It’s also IPX6 rated for installations where moisture is a concern.

PM100X1 Features:

  • Patented BTL Powered “FreeLoad” Technology (US 9,438,181 B1)
  • Current Limited to Protect Head Unit for Both 4 Ohm and 2 Ohm Configurations
  • Harvests both B+ and Audio Signal From Standard Head Unit Speaker Outputs
  • Uses Stored Energy from BTL Amplifier to Produce Dynamic Power of Over 100W
  • High Level Turn On
  • Optional B+ Connection for Non-Standard Speaker Outputs
  • Small Stealth Package that Allows for Anywhere Installation
  • Selectable 4 and 2 Ohm Play
  • 60, 80, and 100 Hz Selectable 12dB/Oct HP Butterworth Crossover
  • Pig Tail Connectivity for Easy Installation
  • Extruded Aluminum Heat Sink
  • Muted turn on
  • Thermal Protection
  • Short Circuit & Over Voltage Protection
  • Discrete surface mount technology
  • CEA-2006 Compliant & CE Compliant
  • Sold in pairs (left/right)
Brand Rockford Fosgate   Model Rockford Fosgate PM100X1K
Product: Rockford Fosgate PM100X1 Punch Marine 100 Watt Full-Range Mono Amplifier - Pair

RMS Power Output (Watts x Channels): 60 x 1
Frequency Response at Rated RMS Power: 20-20k Hz
THD at Rated RMS Power: 1%
Input Voltage: 14.4v
Peak Power Output (Watts x Channels): 100 x 1
Power at 2 Ohms (Watts x Channels): 100 x 1
Minimum Impedance Unbridged: 2
Operating Voltage: 9 – 16 VDC


Amplifier Class: BTL
High-Pass Crossover Frequency: 60, 80, 100 Hz
High-Pass Slope (dB/octave): 12 dB/octave
Bass Boost: No
Cooling: Convection
Fuse Rating: 20
Speaker Level Inputs: Yes
Preamp Outputs: No
Height (inches): 1-5/16
Width (inches): 3-15/16
Depth (inches): 3-1/16

What's in the box:

Rockford Fosgate PM100X1 owner's manual
The PM100X1K package contains two separately-boxed PM100x1 mono amplifiers.
Each amplifier box includes:
Mono amplifier with attached 7.75" pigtail
12" Input/Output/Ground harness (16 AWG wires)
12" Power wire (16 AWG)
2 Self-tapping screws (3/4" length)
Certificate of Performance Verification

Mobile Amplifier Channels

1 Channel (Mono)

Mobile Amplifier Class

Class BTL

Mobile Amplifier Features

High-Pass Filter, Speaker Level Inputs, Weather Resistant

Mobile Amplifier Fuse Rating


Mobile Amplifier RMS

81 to 100 watts

Mobile Min Impedance


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Rockford Fosgate 2 Year Limited Warranty


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