4 Channel Power System Amplifier

TABLE OF CONTENTS

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

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Input Connections and Audio Controls . . . . . . . . . . . . . . 3

Connections for Power and Speakers . . . . . . . . . . . . . . . 5

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Mounting Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Wiring Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Setting the Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Setting the Crossover . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Setting the Bass Boost . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Final System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Product Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

INTRODUCTION

The Clarion APX401.4 is a full-featured four-channel amplifier incorporating the following features:

•Full frequency response with low distortion and exceptional signal to noise performance.

•Advanced circuitry design features bridgeable and mixed mode operations for use in a variety of 4, 3 or 2 channel audio systems.

•Independent front and rear, low-pass or high-pass electronic crossovers each with a 12dB per octave slope and full adjustment range (from 55Hz to 550Hz Front and 55Hz to 5.5kHz Rear) to aid in any audio system configuration.

•Variable bass boost circuit to reinforce low frequency signals that maybe lost due to subwoofer box design.

•Adjustable input level controls with ground loop isolation, which allows a wide range of input signals.

•Remote turn-on with “soft start” muting to prevent turn-on “thump”.

•Pulse-width modulated (PWM) MOSFET power supply with low AM RFI and protection circuits for overheating and speaker shorts.

•2 ohm load capacity to drive a variety of speaker systems.

•Gold-plated input/output connectors and an external automotive type fuse

•Aluminum heat sink for efficient heat dissipation.

•Low profile, compact size for space limited installations.

ABOUT THE MANUAL AND WARRANTY

To start enjoying your new Clarion four-channel amplifier, please read the instructions stated in this manual. Keep all instructions for future reference. Also, save your original sales receipt as proof of purchase.

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Clarion APX401.4 installation manual Table of Contents, Introduction, About the Manual and Warranty
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APX401.4 specifications

The Clarion APX401.4 is an excellent addition to any audio enthusiast’s collection, designed to deliver superior sound quality and performance in a compact format. This four-channel amplifier is engineered to enhance your car audio system with crystal clear sound and powerful output, making it a popular choice among novice and seasoned users alike.

One of the standout features of the APX401.4 is its robust power output. It is capable of delivering 50 watts RMS per channel at 4 ohms, with the potential to drive up to 100 watts RMS per channel at 2 ohms. This flexibility allows users to connect a variety of speakers and subwoofers to suit their audio preferences, whether they are looking for deep bass or crisp highs.

The amplifier utilizes a Class AB design, which is well-known for its efficiency and sound quality. This design offers the best of both worlds—providing high levels of power while minimizing distortion. The result is a clean and rich audio experience, making it ideal for those who appreciate detailed sound reproduction across a range of frequencies.

Additionally, the APX401.4 incorporates advanced technologies such as a high-level input feature, allowing for direct connection to factory-installed head units that do not have preamp outputs. This makes it accessible for installation in various vehicles without the need for significant upgrades to the existing audio system.

The amplifier also comes equipped with an adjustable low-pass filter and a high-pass filter. This feature enables users to tailor the crossover frequencies to achieve a more precise sound profile based on their specific speakers and listening preferences. Whether you want to eliminate unwanted distortion from higher frequencies or enhance bass response, this amplifier provides the necessary tools to fine-tune your audio output.

For those concerned with durability and longevity, the Clarion APX401.4 is built with high-quality components and a robust chassis design that can withstand the rigors of automotive environments. Its compact size allows for easy installation in a variety of spaces within the vehicle.

In summary, the Clarion APX401.4 is a powerful, efficient, and flexible four-channel amplifier that enhances any car audio setup. With its impressive power capabilities, advanced technology, and user-friendly features, it’s an outstanding choice for anyone looking to elevate their in-car listening experience.
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