





Rockford Fosgate M2-500X1
M2 Series 500W Marine Subwoofer Amplifier
Enjoy a complimentary $75 Installation credit on all Online Orders. Limit one per customer. Terms and Conditions apply.
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The Rockford Fosgate M2-500X1 monoblock marine amplifier delivers powerful, deep bass for your boat’s audio system. Engineered with Rockford Fosgate’s legendary performance and marine-grade durability, this amplifier is built to withstand harsh marine conditions while providing clear, robust sound. Compact, efficient, and weather-resistant, the M2-500X1 is the perfect addition to any marine audio setup.
| Key Features | |
|---|---|
| Monoblock Marine Amplifier | Delivers 500 watts of powerful, clear bass for driving subwoofers |
| Compact and Weather-Resistant Design | Built to withstand harsh marine environments with protection against moisture, salt, and UV rays |
| Flexible Installation | Compact size and versatile inputs/outputs make it easy to integrate into any marine audio system |
| Optimized Bass Performance | Variable low-pass filter and Punch EQ allow for fine-tuning of your bass |
| High Efficiency | Runs cool and efficiently, even under demanding conditions |
| Specification | Details |
|---|---|
| Power Output | 300 watts x 1 @ 4 ohms, 500 watts x 1 @ 2 ohms |
| Total Power Output | 500 watts |
| Frequency Response | 20 Hz – 250 Hz |
| Signal-to-Noise Ratio | >85 dB |
| Low-Pass Crossover | Variable, 50 Hz – 250 Hz |
| Dimensions | 8.1" x 5.3" x 1.6" |
| Weather-Resistant | Yes, with corrosion-resistant connectors |
What’s in the Box
- 1 × Rockford Fosgate M2-500X1 Monoblock Marine Amplifier
- Mounting Hardware Kit
- User Manual
- Warranty Card

What Others Are Saying
Eddie was great - SDCS installed a new head unit in my 2019 4Runner. He was honest in his opinions regarding the options I was considering. Pricing was also good - he was able to reuse some of my existing installation kit so I saved a bit of $$.Installation was clean and fast and he took the time to walk through the features before I left. Highly recommend!!
I had a great time at this shop! The staff really knows their stuff and took the time to explain the different options without pressure. Installation was quick, clean and professional. Everything looks factory and sounds amazing. The prices were fair and customer service was above and beyond. I highly recommend this place if you're looking for quality car audio and excellent service.
Those guys are really professional! I had a new Alpine floating head unit installed in my 2008 Mercedes, and it feels like a brand-new car. The installation was super clean. At first, the sound wasn’t the same as the factory stereo, but Kevin tuned it to be just as good—if not better—without adding any new amps. They even used my factory GPS antenna so I don’t have extra wires hanging out. On top of that, they matched the online price. Big thanks to Kevin and Eddie—highly recommended!
Kevin was awesome, he took his time and explained everything to me. I went in initially for a dash cam install and then decided to get a sub and amp installed as well. Both turned out great and will be returning if I need more work done.
Came In not knowing what to expect when suddenly my stereo stopped working. Spoke with Kevin in the front and after a VERY fast diagnosing they discovered my wiring was incorrect. After only about 45 minutes total being in the store I was on my way to the beach with a working stereo again! Thank you so much SDCARSTEREO
Highly recommend Kevin and the team at San Diego Car Stereo for any issues with aftermarket stereos. I bought a car with an aftermarket stereo and AC unit that wasn’t working properly—specifically, the heat wasn’t functioning due to an improper setup. I had several people look at it with no luck, and even the dealership basically refused to help because it was an aftermarket install. I came to Kevin and his team over the holidays feeling pretty defeated, but he was confident he could get the heat working before I headed back to a Colorado winter. Sure enough, he got it done.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.
