Clarion APX400 manual Final System Checks, Troubleshooting

Page 14

FINAL SYSTEM CHECKS

1.Start the engine and turn on the source unit. After a two-second delay, slowly increase the Volume Control and listen to the audio. If you hear any noise, static, distortion or no sound at all, check the connections, and also refer to Troubleshooting. Depending on your system design, the levels may become quite loud even at low Volume Control settings. Until you get an “audio feel” of the system’s power, use care when adjusting controls.

2.Turn the Balance Controls to their extreme positions and listen to the results. Audio output should match control settings (audio from the left speaker when balance is left).

3.Increase the volume and verify that the amplifier reproduces audio (at full frequencies) without distortion. If you hear distortion, check the connections and verify that the Gain Control is set correctly. Another possibility is damaged speakers or under-powered speakers. Once again refer to Troubleshooting for additional help.

TROUBLESHOOTING

Problem

No Audio.

Solution

Low or no remote turn-on voltage. Check remote connections at amplifier and source unit.

Blown amplifier fuse. Replace with new fast-blow fuse (same rating).

Power wires not connected. Check battery and ground wiring at amplifier; also check battery connections.

Speaker leads shorted. Check speaker continuity to ground, it should not show a common ground.

Speakers not connected or are blown. Check speaker connections at amplifier, measure coil impedance.

Problem

Audio cycles on and off.

Solution

Thermal protection circuits are shutting amplifier off. Check location for adequate ventilation; consult an authorized Clarion Audio Dealer

Problem

Distorted audio.

Solution

Gain is not set properly, or damaged speaker cones. Review Setting Gain; inspect each speaker cone for signs of damage (i.e. frozen cone, burning smell, etc.)

12

Page 13 Page 15
Image 14
Page 13 Page 15
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.
Top Page Image Contents