High-pass/Low-pass Filter Controls

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APX480M Power System Amplifier

The Input Connections are gold-plated RCA Jacks and are labeled as FRONT RIGHT, FRONT LEFT, REAR RIGHT and REAR LEFT. The Gain Controls provide a wide adjustment range to accommodate output levels from any brand of source unit.

•Gain Controls - Seperate Front and Rear Gain Controls allow you to set the nominal operating level of the amplifier. The amplifier’s range, 250mV to 2.5V for RCA inputs or 500mV to 5V for speaker level inputs, can accommodate input levels from virtually any brand of source unit.

•Bass Boost Control - The amplifier also features a “high-Q” (i.e. narrow frequency band) Bass Boost circuit. It acts much like an equalizer, with adjustable gain (from 0 to +18dB) fixed at 45Hz. Use this feature to tune low- frequency audio response to compensate for a less than ideal subwoofer enclosure design. The added boost produces rich, full bass tones that are normally difficult to reproduce in the car audio environment. NOTE: If Bass Boost is undesired, set Bass Boost to 0dB.

•Freq (Hz) Controls - The front crossover frequency is fully adjustable between 55Hz and 550Hz. The rear crossover frequency is fully adjustable between 55Hz and 5500Hz (via the Rear Crossover Frequency Multiplier) for a wider range of crossover points. Use this feature, along with your speaker manufacturer’s recommended crossover frequencies, to quickly design a more advanced system (see Applications on page 6). NOTE: If either of the X-Over Mode Switches is set to OFF, varying the Freq (Hz) Control will pro- duce no effect.

•Rear X-Over Frequency Multiplier Switch - When engaged, this switch increases the crossover frequency of the rear channels by a factor of 10. Example: If the Freq (Hz) dial is set for 240Hz, pushing in the Multiplier Switch changes the setting to 2400Hz.

•X-Over Mode Switches - These switches are equipped with 12dB per octave electronic filters for precise frequency attenuation with minimal phase distortion. The steep crossover slopes keep midrange tones out of the sub- woofer and thereby eliminating an unnatural “nasal” tone quality in the audio system. Each filter is activated by sliding the X-Over Mode Switch to either LP or HP.

•Input Mode Switches - These switches allow you to set the input mode for front and rear channels. Stereo input allows full left and right stereo operation. Right (bridged) input allows a single channel input for bridged operation. This is especially useful in high powered systems when using the APX480M as a bridged 2-channel amplifier. L + R (sum mono) allows a stereo input to be summed into a mono output.

•Rear Channel Input Select - This switch allows you to use a 2 channel input to drive all 4 channels of this amplifier.

APX480M specifications

The Clarion APX480M is a cutting-edge marine amplifier that combines power with durability, making it an excellent choice for boat enthusiasts who want to enhance their audio experience on the water. This amplifier is designed to deliver high-quality sound and can power even the most demanding marine audio systems.

One of the standout features of the APX480M is its impressive power output. With a maximum output of 480 watts, it can drive multiple speakers and subwoofers effectively, providing a rich sound experience. The amplifier operates at a 4-channel configuration, allowing for diverse installation options. It is capable of delivering 60 watts RMS per channel into 4-ohm loads, ensuring that you can achieve loud and clear audio without distortion, even at higher volumes.

The APX480M is built for the tough marine environment. It has been designed and constructed to resist moisture and corrosion. The amplifier features conformal coated circuit boards, which protect the electronics from harsh marine conditions such as saltwater and humidity, contributing to its longevity and reliability. Additionally, the rugged aluminum heatsink provides efficient thermal management, preventing overheating during extended use.

Another notable characteristic of the APX480M is its built-in high-pass and low-pass crossovers. These allow users to fine-tune their audio system, ensuring that each speaker receives the appropriate frequency range. This feature enhances overall sound quality and helps in achieving a balanced audio experience, essential for listening to music while cruising on the water.

The amplifier also incorporates advanced technologies for improved performance. Some of these technologies include a MOSFET power supply, which maximizes efficiency and minimizes signal loss, and a variable bass boost, allowing users to emphasize low frequencies for a more powerful bass response. It also features low-level RCA inputs, making it easier to connect to head units for seamless integration into existing audio systems.

Installation is made simple with the APX480M, thanks to its compact design and user-friendly layout. The amplifier comes with a comprehensive set of mounting options and a straightforward wiring scheme, making it accessible for both novice and experienced installers.

In summary, the Clarion APX480M stands out in the marine audio market with its powerful output, durable construction, and versatile features. Whether you are sailing on a serene lake or navigating rough seas, this amplifier ensures an unparalleled audio experience that can withstand the elements while delivering crisp, high-quality sound.