JL Audio AP 4 Channel Compact Marine Amplifier AP300/4 for Enhanced Boat Audio System

AP 4 Channel Compact Marine Amplifier - AP300/4

POWER THE MOMENT

With these tough and ultracompact amplifiers, you can enjoy every note from every part of your boat.

• Efficient Class-D design


• Built-in LCD for manual control


• Ignition protected and IP-67 Rated (excluding cables)


• Easy tune feature

300-Watt 4 Channel Amplifier

This 4-channel amplifier can power up to a maximum of four pairs of speakers or two pairs of speakers and one subwoofer.

Easy Tune Feature

For additional optimization, pair with a Fusion stereo with built-in DSP, and download the Fusion Audio app for selectable profiles. This enables the Easy Tune feature, which streamlines amplifier setup to ensure superior sound quality and system protection.

Class-D Amplifier Technology

The highly efficient Class-D design provides lower battery drain with a higher output than Class-AB amplifiers. This delivers increased power to the connected speakers/subwoofers for an enhanced level of audio performance.

Rugged Design

These amplifiers offer superior levels of durability and are built to IP67 standards (excluding cables) to withstand abuse in harsh marine environments.

Specifications

General

• Channels: 4


• Physical Height: 1.86


• Physical Width: 10.43


• Physical Depth: 4.9


• Operating Voltage: 9-16 VDC


• Water and Dust Rating: IP67

Audio

• Amplifier Class: Class D


• RMS Power @ 4 OHM: Channel: 50 W x 4/150 W x 2 (Bridged)


• RMS Power @ 2 OHM: 4 Channel: 75 W x 4


• Frequency Response: 20hz - 20kHz


• Input Sensitivity: Switchable from 200 mV-2 V RMS (Low) to 800 mV-8 V RMS (High)


• Input Impedance: 11 k (High) 20 k (Low)


• Current Consumption (idle): 700-750mA


• Fuse Rating: 35A


• Recommended Fuse Types: AFS, AGU, or MaxiFuse


• Min. Copper Power/Ground Wire: 4 awg Wire


• Protection Circuits: Input under/over voltage, Over temperature, Output short circuit

Signal Processing

• High-Pass/Low-Pass Full Range Filter: Yes (user selectable)


• Filter modes - Channel 1 2: Off, Low-pass, or High-pass


• Filter modes - Channel 3 4: Off, Low-pass, or High-pass

The JL Audio AP 4 Channel Compact Marine Amplifier AP300/4 delivers powerful, high-quality audio performance in a rugged, space-efficient design perfect for marine applications. Its efficient Class-D technology ensures optimal power output while minimizing battery drain, making it ideal for extended use on boats. This amplifier features a built-in LCD for easy manual control and an easy tune feature that simplifies setup, especially when paired with a Fusion stereo system with built-in DSP. Downloading the Fusion Audio app allows for selectable profiles that further optimize sound quality and system protection, providing a seamless user experience. Constructed to withstand harsh marine environments, the AP300/4 is IP67 rated (excluding cables), ensuring durability against water, dust, and impact. Its compact form factor makes it easy to install in tight spaces onboard, without sacrificing audio performance. The amplifier supports up to four pairs of speakers or two pairs plus a subwoofer, offering versatile options for customizing your boat’s audio system. The unit’s robust protection circuits guard against input voltage fluctuations, overheating, and short circuits, adding reliability and peace of mind during operation. Designed for easy integration, the AP300/4 features switchable input sensitivity and full-range filters, allowing users to tailor the audio output to their preferences. Whether powering multiple speakers or a subwoofer, this amplifier provides a significant upgrade to any marine sound system, combining power, durability, and smart features in a compact package.

Features:

• Efficient Class-D design for high output and low power consumption

• Built-in LCD display for manual control

• Easy tune feature for simplified setup and optimized sound quality

• IP67 rated waterproof and dustproof construction (excluding cables)

• Supports up to four channels, ideal for multiple speakers or subwoofers

• Compatible with Fusion stereo systems featuring built-in DSP

• Protection circuits including input voltage, temperature, and short circuit safeguards

• Switchable input sensitivity from 200 mV-8 V RMS for flexible tuning

• Full-range filters with user-selectable high-pass and low-pass modes