Clarion APX400 manual Setting the Gain, Setting the Crossover, Setting the Bass Boost

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SETTING THE GAIN

After completing the installation, follow these steps to set the Gain Control and then perform the Final System Checks.

1.Turn the Gain Control all the way counter-clockwise.

2.Turn the vehicle’s Ignition Switch to the ON position. Then turn the ON/OFF Switch on the source units to the ON position. Set all Tone or Equalization Controls to “flat” positions and turn Loudness off.

3.Play a CD or Tape and set the Volume Control at 75% of full level. Note: If the system uses an equalizer, set its frequency controls to “flat” positions.

4.Slowly increase the Gain Control. Stop when you hear a slight distortion of audio.

SETTING THE CROSSOVER

The Clarion APX400.4M features fully adjustable front and rear crossovers. To set the crossovers, follow these steps.

1.Using the X-Over Mode Switch, select the desired mode - LP for Low Pass, HP for High Pass and OFF for Full Range.

2.Using the Freq (Hz) Selection Control, select the desired frequency. If the desired frequency exceeds the range of the Freq (Hz) Selection Control, press the Crossover Frequency Multiplier Switch to increase the value by a multiplier of 10.

•For example, 55Hz x 10 = 550Hz or 550Hz x 10 = 5.5kHz.

3.Repeat steps 1 and 2 for both the front and rear crossovers.

SETTING THE BASS BOOST

1.Initially set the Bass Boost control to its full left position (i.e. 0dB).

2.Listen to a variety of music styles (e.g. Rock, Rap, etc.) and slowly increase the Bass Boost control until a noticeable increase in low bass response is perceived.

3.Slowly adjust the Bass Boost control (up or down) to realize the best bass response.

CAUTION: If you hear a “pop” (due to speaker over-excursion), lower the Bass Boost to prevent speaker damage. If the system sounds muddy and distorted (due to amplifier clipping), lower Bass Boost to avoid shutdown from overheating.

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Contents Page Table of Contents About the Manual and WarrantyIntroduction Input Connections and Audio Control DescriptionHigh-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 Mounting Precautions InstallationWiring Precautions Electrical connections for the APX400.4M Setting the Crossover Setting the GainSetting the Bass Boost Final System Checks TroubleshootingAPX400.4M Product SpecsAPX400.4M-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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