Battery and Charging, Wiring the System

BATTERY AND CHARGING

Amplifiers will put an increased load on the vehicle's battery and charging system. We recommend checking your alternator and battery condition to ensure that the electrical system has enough capacity to handle the increased load of your stereo system. Stock electrical systems which are in good condition should be able to handle the extra load of any Rockford amplifier without problems, although battery and alternator life can be reduced slightly. To maximize the performance of your Rockford Fosgate amplifier, we suggest the use of a heavy duty battery and an energy storage capacitor.

WIRING THE SYSTEM

CAUTION: Avoid running power wires near the low level input cables, antenna, power leads, sensitive equipment or harnesses. The power wires carry substantial current and could induce noise into the audio system.

•For safety, disconnect the negative lead from the battery prior to beginning the installation.

1.Configure the internal XCard crossovers prior to installation. Refer to “Using the XCard” (page 14) for further information.

2.Plan the wire routing. Take care when running signal level RCA cables to keep them close together but isolated from the amplifier's power cables and any high power auto accessories, especially electric motors. This is done to prevent coupling the noise from radiated electrical fields into the audio signal. When feeding the wires through the firewall or any metal barrier, protect them with plastic or rubber grommets to prevent short circuits. Leave the wires long at this point to adjust for a precise fit at a later time.

3.Prepare the Power cable for attach- ment to the amplifier by stripping 5/8" of insulation from the end of the wire.

To prevent the wire from fraying, strip the insulation at a 45° angle. Insert the bared wire into the B+ terminal

with the long side of the insulation on the top. Bend the cable down at a 90° angle. Tighten the set screw to secure the cable in place.

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STRIP WIRE	INSULATION
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5/8"
AMP
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225.2, 125.2, 55.2, 75.2 specifications

Rockford Fosgate has long been recognized for delivering high-quality audio solutions for car enthusiasts, and the 225.2, 125.2, 55.2, and 75.2 amplifiers are no exception. These amplifiers cater to various audio needs, whether you are looking to enhance the sound quality in your vehicle or set up a full-fledged audio system.

The Rockford Fosgate 225.2 is a powerful two-channel amplifier that offers a maximum power output of 225 watts. It features a MOSFET power supply, providing excellent efficiency and reliability under load. The 225.2 also includes a low-pass filter and built-in crossover, enabling users to tailor the sound to fit specific audio preferences by adjusting the frequency response. Its sleek design and durable construction ensure it can withstand the demands of a mobile environment.

Meanwhile, the 125.2 amplifier is designed for those who want a compact yet powerful audio solution. This two-channel amplifier delivers 125 watts of peak power and incorporates advanced technologies such as a high-level input, allowing for easy integration into factory systems. The 125.2 also features adjustable bass boost to enhance low-frequency performance, making it an attractive choice for those who enjoy bass-heavy music genres.

On the other hand, the Rockford Fosgate 55.2 amplifier is a more compact offering. Despite its smaller size, it provides impressive sound quality and power output of 55 watts per channel. Ideal for adding an extra punch to factory speakers, the 55.2 utilizes a low-impedance design to maximize efficiency. It is particularly well-suited for entry-level audio systems, making it accessible for those just starting in car audio.

Lastly, the 75.2 amplifier strikes a balance between size, power, and versatility, delivering 75 watts per channel. With features like thermal and overload protection, the 75.2 ensures both safety and performance under stress. The compact form factor makes it easy to install in various vehicle models without sacrificing audio quality.

All of these amplifiers showcase Rockford Fosgate's commitment to sound quality, durability, and user-friendly design. Each model incorporates technologies that enhance performance while offering flexibility for customization, making them excellent choices for car audio enthusiasts looking to elevate their listening experience. Whether you need a compact solution for upgraded sound or a powerhouse for a full system, Rockford Fosgate has options that cater to every need.