Advanced Rollback Thermal protection

AMPLIFIER STATUS INDICATOR LIGHTS & PROTECTION CIRCUITRY

There are two status indicator lights on the input / control end of the amplifier.

Power

Protect

1)“Power” (Green): lights to indicate that the amplifier is turned on and operating normally.

2)“Protect” (Red): Indicates that the amplifier protection circuitry has been activated to prevent product failure due to a short-circuit or a dangerously low impedance connected to the amplifier output(s). Connecting the speaker outputs to an impedance lower than 2 ohms will cause this protection mode to activate. When this protection mode is activated, the amplifier will reduce it maximum power output to protect its circuitry, which will manifest itself as increased distortion. When the problem is corrected, the amplifier will return to normal operation.

Unlike conventional thermal protection systems, which shut down an amplifier when it overheats, this system protects the amplifier by gradually reducing power output if the amplifier’s safe operating temperature is exceeded. The amplifier will continue to operate and return

to normal power output once its temperature returns to a normal range.

Low-Voltage protection:

If the car’s supply voltage drops below 10 volts, the entire amplifier will shut itself off to protect its internal circuitry. The green “Power” indicator will turn off when this occurs. The amplifier will turn back on when voltage climbs back above 10 volts. This may happen in a rapid cycle when bass-heavy program material causes a weak charging system to dip below 10 volts momentarily. If this is happening in your system, turn your audio system off and have your power wiring, ground connections and charging system inspected.

SERVICING YOUR JL AUDIO AMPLIFIER

If your amplifier fails or malfunctions, please return it to your authorized JL Audio dealer so that it may be sent in to JL Audio for service. There are no user serviceable parts or fuses inside the amplifier. The unique nature of the circuitry in the JL Audio amplifiers requires specifically trained service personnel. Do not attempt

to service the amplifier yourself or through unauthorized repair facilities. This will not only void the warranty, but may result in the creation of more problems within the amplifier.

If you have any questions about the installation or setup of the amplifier not covered in this manual, please contact your dealer or technical support.

JL Audio Technical Support:

(954) 443-1100

9:00 AM – 5:30 PM (Eastern Time Zone)

Monday - Friday

JL AUDIO A1800

A1800 specifications

The JL Audio A1800 is a powerhouse in the realm of automotive audio amplifiers, designed to deliver exceptional sound quality and unparalleled performance. This Class D amplifier is engineered to provide robust power output while maintaining high efficiency, making it a popular choice among audiophiles and car audio enthusiasts alike.

One of the standout features of the A1800 is its impressive power rating. With a continuous output of 800 watts RMS at 1 ohm, it can easily drive a wide range of subwoofers, providing deep, impactful bass that brings music to life. This amplifier's versatile power handling allows it to be configured with different speaker types, ensuring that users can achieve their desired sound profile.

The A1800 employs JL Audio's advanced Class D technology, which contributes to its compact size and lightweight design. This makes installation easier and provides flexibility when it comes to mounting the amplifier in tight spaces. Despite its small footprint, the A1800 does not compromise on performance, offering high dynamic range and minimal distortion, even at high volume levels.

Another notable characteristic of the A1800 is its sophisticated onboard signal processing capabilities. It features a variable low-pass filter, allowing users to fine-tune the crossover frequency according to their specific audio setup. Additionally, the amplifier includes both bass boost and phase control options, enabling users to tailor the sound to their preferences and achieve the best possible integration with their vehicle's audio system.

The A1800 also prioritizes durability and reliability. Built with premium components, it features a robust thermal management system designed to keep the amplifier running cool, even during extended use. This reliability is further enhanced by JL Audio's patented Smart Protect technology, which continuously monitors the amplifier's performance to prevent overheating and distortion.

In terms of aesthetics, the A1800 boasts a sleek and modern design with clean lines and a professional finish. This makes it not only a functional component of a car audio system but also an attractive addition to any vehicle's interior.

Overall, the JL Audio A1800 stands out as an excellent choice for anyone seeking to elevate their car audio experience. Its combination of powerful output, advanced technology, and user-friendly features make it a top contender in the competitive amplifier market. Whether for casual listening or high-performance audio setups, the A1800 delivers quality sound that is sure to impress.