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Rockford Fosgate PM100X1

Two compact full-range mono amplifiers — 60 watts RMS x 1 (each)

Item # 575PM100X1

Rockford Fosgate's gamechanging PM100X1 package contains two seriously small, full-range mono amps, each one...

Read more from Crutchfield writer, Buck P.

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About the Rockford Fosgate PM100X1

Magic power pack

Rockford Fosgate's gamechanging PM100X1 package contains two seriously small, full-range mono amps, each one delivering 60 watts RMS to a speaker — that's more than twice the power of a typical factory radio or aftermarket receiver. Employing their patent-pending "FreeLoad" technology, each PM100X1 uses a receiver's output as its power source, so it doesn't need a power wire running to the battery (although you will have to run a ground wire). 

Magic power pack

Rockford Fosgate's gamechanging PM100X1 package contains two seriously small, full-range mono amps, each one delivering 60 watts RMS to a speaker — that's more than twice the power of a typical factory radio or aftermarket receiver. Employing their patent-pending "FreeLoad" technology, each PM100X1 uses a receiver's output as its power source, so it doesn't need a power wire running to the battery (although you will have to run a ground wire). 

New design

This revolutionary amp stores voltage from the receiver's output in a large power supply reservoir for boosting its output, allowing Rockford Fosgate to pack all that power in such a small chassis. Instead of having to find a spot for a larger 2-channel amp, you can mount these tiny amps just about anywhere you want, even behind the speakers.

Control

Each amp comes ready to work with almost any radio or receiver — no complicated gain control adjustments are necessary. A selectable high-pass filter lets you tune the sound to fit your speakers. You'll also find an input impedance switch, which you can use to match the amp's input to the output of a receiver capable of driving 2-ohm loads.

Powersport and marine ready

A rubber switch cover prevents dirt and water from getting inside and doing any damage. With the cover in place, the amp carries an IPX6 water intrusion rating, which means it'll tolerate getting sprayed but not submerged. The amp's compact size (4" x 3") makes it perfect for powersports vehicles and boats, where space is precious.

PM100X1

PM100X1 controls

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Product highlights:

  • two compact mono amplifiers
  • 60 watts RMS x 1 at 4 ohms (100 watts RMS x 1 at 2 ohms)
  • CEA-2006 compliant
  • patent-pending BTL "FreeLoad" technology requires no separate positive power lead
  • connects to speaker wiring and chassis ground
  • selectable high-pass filter (60, 80, or 100 Hz at 12 dB/octave)
  • input impedance switch for low-impedance-capable receivers
  • rubber switch cover
  • IPX6 water intrusion rated
  • dimensions: 3"W x 1-5/16"H x 3-15/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # PM100X1K
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What's in the box:

  • 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

Customer reviews

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Rockford Fosgate PM100X1 Reviews

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Product Research

Features

Overview: The Rockford Fosgate PM100X1K contains two separate PM100X1 full-range mono amplifiers, one for the left channel, and one for the right channel. These Punch Marine amps feature conformal-coated PCBs (printed circuit boards) and Element-Ready design that makes them perfect for mobile, motorsport, and marine applications. Rockford Fosgate's patent-pending BTL Powered "FreeLoad" technology powers the amplifier without requiring a standard B+/Ground power connection. These tiny amplifiers only require a 4" x 3" footprint.

BTL Powered FreeLoad Technology: The PM100X1 does not require a power wire from the battery to power the amplifier. Audio signals contain an AC signal, and a DC offset voltage that the amplifier can use to store in its internal capacitors to produce higher output power when needed. This technology works with 2-ohm radios found in many premium systems, as well as typical 4-ohm radios. A 2-ohm/4-ohm input switch is provided on the amp to match to the output impedance of the connected radio. The amp uses the input signal to automatically turn the amp on and off.

Note: A power wire is supplied in case the output of the radio is not high enough to sufficiently power the amp.

Element Ready: This Rockford Fosgate Element Ready amplifier is designed to stand up to harsh environmental conditions, with protections against dust, UV rays, corrosion, and moisture. The amp features an extruded aluminum heat sink, stainless steel hardware, sealed motor structures, and UV inhibitors, to keep the amplifier performing day in and day out. The single-sided wiring port is sealed to protect it from water intrusion, and carries an IPX6 rating. The amp can be installed on motorcycles, ATVs, and boats without worry of failure due to exposure to the elements.

Power Output: The PM100X1 amplifier has a rated power output of 60 watts x 1 at 4 ohms (CEA-2006). The dynamic power ratings are 61 watts x 1 at 4 ohms, and 109 watts x 1 at 2 ohms.

Selectable Crossover: A selectable Butterworth high-pass crossover is provided to tailor the output to the size of the connected speaker. You can set the crossover frequency to 60Hz, 80Hz, or 100Hz via the 3-way switch on the side of the amp. The crossover has a slope of 12 dB/octave.

Protection Circuits: The PM100X1 amp has protection circuitry that will shut off the amplifier in case of short circuit, over-voltage, or excessive heat.

Specifications:

  • Frequency Response: 60Hz to 20kHz (+/- 1.0dB)
  • Total Harmonic Distortion (THD+N): <1.0% at 4 ohms or 2 ohms

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
looks like the only amp that will mount in 2016 MX5 and work with existing Bose system, we will see. If it works then you can add it to a recommendation for this vehicle. [ chris  May 01, 2018 ]
A
Love Rockford fosgate products and wanted to try this on my harley [ CHICO  Jul 22, 2017 ]
A
I wanted something small to power my aftermarket door speakers without the hassle of running extra wires and needing to figure out where to mount an amp. This product seems to solve these issues and seems relatively easy to install. [ ANTHONY  Mar 28, 2017 ]
A
I wanted to add a small amplifier to my motorcycle. These are new but I like the concept and decided to try versus adding a traditional amplifier [ MARC  Mar 17, 2017 ]

3 questions already asked

Q
Can the high pass crossover be defeated?
[ a  Feb 23, 2019 ]
1 answer
A
No. The energy from the lower frequencies is what powers the amplifier. If you were to defeat it, there would be no amplification.
[ KEVIN  Feb 24, 2019 ]
Q
Will these ones work on my ford f-150 with sony audio??
[ Milio  Oct 04, 2018 ]
1 answer
A
Potentially, yes. You'll want some aftermarket speakers that are capable of handling the additional wattage but you should be able to provide audio into the PM100X1 from your stock system. For additional assistance and personalized recommendations, feel free to contact us directly by phone or through our online chat service: https://www.crutchfield.com/support/ContactUs.aspx
[ Ryan  Oct 10, 2018 ]  Staff
Q
What is the maximum input wattage these units can handle?
[ don  Feb 20, 2017 ]
1 answer
A
Sorry for the delayed response. There is no "maximum input wattage" rating. If the stereo's output somehow exceeds 60 watts RMS at 4 Ohms, the PM100x1 would be redundant so, they will work for any wattage output you may want to use them with. I hope that helps. My Bio: https://www.crutchfield.com/Support/Bio.aspx?bio=5
[ Ryan  Mar 10, 2017 ]  Staff

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