Clarion APX400 manual Introduction, About the Manual and Warranty, Table of Contents

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INTRODUCTION

The Clarion APX400.4M is a full-featured four-channel amplifier. It comes with the following features:

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

•Advanced circuit design features bridgeable and mixed mode operation for use in a variety of 4, 3 or 2 channel systems

•Independent front and rear, low-pass/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 audio system design

•Variable bass boost circuit to reinforce low frequency signals that may be

lost due to subwoofer box design

•Adjustable input level controls with ground loop isolation accepting 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 listed in this manual. Keep all instructions for future reference. Please fill out and send in the enclosed warranty card to protect your purchase and aid in warranty service. Also, save your original sales receipt as proof of purchase.

TABLE OF CONTENTS

Description • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 1

Input Connections and Audio Controls

• • • • • • • • • • • • • • • • • • • • 1

Connections for Power and Speakers

• • • • • • • • • • • • • • • • • • • • • 3

Applications

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 4

Installation

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 9

Mounting Precautions

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 9

Wiring Precautions • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 9

Setting the Gain • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 11

Setting the Crossover

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 11

Setting the Bass Boost • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 11 Final System Checks • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •12 Troubleshooting • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •12 Product Specs • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •13 Notes • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •13

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Contents Page Introduction About the Manual and WarrantyTable of Contents Description Input Connections and Audio ControlHigh-pass/Low-pass Filter Controls Connections for Power and Speakers Applications Page Channel Stereo System with Low-Pass Bridged Mono Channel Channel High Power Systems Satellite or Subwoofer Mixed-Mode System On Rear Full-Range Speakers On Front Wiring Precautions InstallationMounting Precautions Electrical connections for the APX400.4M Setting the Bass Boost Setting the GainSetting the Crossover Troubleshooting Final System ChecksProduct Specs APX400.4MAPX400.4M-10 Rev.2 05/00

APX400 specifications

The Clarion APX400 is a state-of-the-art car audio amplifier that combines innovative technologies with a sleek design to deliver exceptional sound quality for automotive audio systems. As an amplifier known for its powerful performance and versatility, the APX400 has become a popular choice among car audio enthusiasts looking to enhance their listening experience.

One of the standout features of the APX400 is its high power output. With a maximum output of 400 watts, it supports a wide range of speaker configurations, making it suitable for both component and coaxial speakers. The amplifier's robust power handling capability ensures that it can deliver clean, distortion-free sound at high volumes, allowing users to enjoy their favorite music without compromising on quality.

The Clarion APX400 utilizes advanced Class D amplifier technology, which enables efficient power consumption while maintaining high audio fidelity. This technology is designed to minimize heat generation, ensuring that the amplifier operates efficiently and reliably even during prolonged use. Additionally, the Class D design contributes to a compact form factor, making installation in various vehicle configurations easier without taking up excessive space.

The APX400 features comprehensive signal processing capabilities, including adjustable high-pass and low-pass filters. This allows users to tailor the audio output to their specific listening preferences and adapt it to the acoustic characteristics of their vehicle. The amplifier also includes a variable gain control, making it simple to match the output level with other components in an audio system for seamless integration.

Another significant aspect of the Clarion APX400 is its robust build quality. The amplifier is constructed with durable materials that can withstand the rigors of automotive environments, ensuring long-lasting performance. Its streamlined design supports effective heat dissipation, which is critical for maintaining operational stability, especially during high-demand situations.

Additionally, the APX400 is equipped with multiple protection circuits to guard against short circuits, overheating, and over-voltage situations. This ensures both the safety of the amplifier and the connected audio components, providing peace of mind for users.

In summary, the Clarion APX400 offers a compelling combination of power, versatility, and durability. With its advanced Class D technology, adjustable filters, and protective features, it stands out as a premium choice for anyone looking to elevate their car audio experience to the next level.
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