INTRODUCTION

Dear Customer,

Congratulations on your purchase of the world's finest brand of car audio amplifiers. At Rockford Fosgate we are fanatics about musical reproduction at its best, and we are pleased you chose our product. Through years of engineering expertise, hand craftsmanship and critical testing procedures, we have created a wide range of products that reproduce music with all the clarity and richness you deserve.

For maximum performance we recommend you have your new Rockford Fosgate product installed by an Authorized Rockford Fosgate Dealer, as we provide specialized training through Rockford Technical Training Institute (RTTI). Please read your warranty and retain your receipt and original carton for possible future use.

Great product and competent installations are only a piece of the puzzle when it comes to your system. Make sure that your installer is using 100% authentic installation accessories from Connecting Punch in your installation. Connecting Punch has everything from RCA cables and speaker wire to Power line and battery connectors. Insist on it! After all, your new system deserves nothing but the best.

To add the finishing touch to your new Rockford Fosgate image order your Rockford accessories, which include everything from T-shirts to jackets and hats.

To get a free brochure on Rockford Fosgate products and Rockford accessories, in the U.S. call 480-967-3565 or FAX 480-967-8132.

For all other countries, call +001-480-967-3565 or FAX +001-480-967-8132.

PRACTICE SAFE SOUND™

Continuous exposure to sound pressure levels over 100dB may cause permanent hearing loss. High powered auto sound systems may produce sound pressure levels well over 130dB. Use common sense and practice safe sound.

If, after reading your manual, you still have questions regarding this product, we recommend that you see your Rockford Fosgate dealer. If you need further assistance, you can call us direct at

1-800-669-9899. Be sure to have your serial number, model number and date of purchase available when you call.

The serial number can be found on the outside of the box. Please record it in the space provided below as your permanent record. This will serve as verification of your factory warranty and may become useful in recovering your unit if it is ever stolen.

Serial Number: _________________________________________

Model Number: ________________________________________

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2

Safety Instructions . . . . . . . . . . . . . . . . . . . 3

Design Features . . . . . . . . . . . . . . . . . . . . . 4

Installation . . . . . . . . . . . . . . . . . . . . . . . 4-8

Installation Considerations . . . . . . . . . . . 4

Mounting Locations. . . . . . . . . . . . . . . . 5

Battery and Charging . . . . . . . . . . . . . . . 5

Wiring the System . . . . . . . . . . . . . . . . . 6

Using Passive Crossovers . . . . . . . . . . . . 7

Remote Punch Bass . . . . . . . . . . . . . . . . 8

Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 8

Adjusting Gain . . . . . . . . . . . . . . . . . . . 8

Adjusting Crossover Frequency . . . . . . . 8

Troubleshooting . . . . . . . . . . . . . . . . . . . . . 9

Accessories. . . . . . . . . . . . . . . . . . . . . . . . . 9

Specifications . . . . . . . . . . . . . . . . . . . . . . 10

Limited Warranty Information . . . . . . . . . . 11

International Instructions . . . . . . . . . . . . . 12

NOTE: Review each section for more detailed information.

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Rockford Fosgate 351M manual Introduction, Table of Contents
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351M specifications

Rockford Fosgate is a brand synonymous with premium sound performance, particularly in the realm of car audio equipment. One of their standout products is the Rockford Fosgate 351M, a powerful marine amplifier designed to deliver exceptional audio clarity and loudness in rugged environments, such as on boats and other watercraft.

The Rockford Fosgate 351M is a 3-channel amplifier that brings versatility and power to any marine audio setup. With an impressive power output of 50 watts per channel at 4 ohms, it ensures that audio enthusiasts can enjoy their music with remarkable depth and clarity, even in the noisy environment of an open water setting. This amplifier is also capable of delivering a maximum output power of up to 150 watts at 2 ohms, making it ideal for driving multiple speakers with ease.

One of the remarkable features of the 351M is its Class D topology, which promotes greater efficiency and reduces heat production compared to traditional amplifier designs. This ensures that the amplifier performs optimally without the risk of overheating, even during extended listening sessions. Additionally, its compact size allows for easy installation in limited spaces, making it a practical choice for any marine audio system.

The 351M is built with marine-grade materials, offering IPX6 water and dust protection. This means it can withstand splashes and saltwater exposure, providing peace of mind for users who wish to use it in challenging outdoor conditions. The amplifier's rugged construction ensures a long lifespan and reliable performance, even in the harshest marine environments.

Integrated features such as integrated crossover filters allow users to tailor their sound more precisely. This ensures that highs, mids, and lows can be optimized for various speaker systems, providing a truly immersive listening experience. Furthermore, the amplifier comes with RCA line outputs, enabling easy expansion and linking with additional amplifiers if required.

The Rockford Fosgate 351M is the ideal solution for marine audio enthusiasts seeking quality amplification for their sound systems. With its advanced technology, durable construction, and user-friendly features, it stands out as a top choice for those looking to enhance their boating experience with high-performance audio. Whether you're cruising on a lake or taking on the open sea, the 351M provides the power and clarity needed to enjoy your favorite tunes.
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