4 Channel Power System Amplifier
2
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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