JL Audio A6450 owner manual Protect Your Hearing, Serial Number, Installation Applications

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PROTECT YOUR HEARING!

We value you as a long-term customer. For that reason, we urge you to practice restraint in the operation of this product so as not to damage your hearing and that of others in your vehicle. Studies have shown that continuous exposure to high sound pressure levels can lead to permanent (irreparable) hearing loss. This and all other high-power amplifiers are capable of producing such high sound pressure levels when connected to a speaker system. Please limit your continuous exposure to high volume levels.

While driving, operate your audio system in a manner that still allows you to hear necessary noises to operate your vehicle safely (horns, sirens, etc.).

SERIAL NUMBER

In the event that your amplifier requires service or is ever stolen, you will need to have a record of the product’s serial number. Please take the time to enter that number in the space provided below. The serial number can be found on the bottom panel of the amplifier and on the amplifier packaging.

Serial Number:

INSTALLATION APPLICATIONS

This amplifier is designed for operation in vehicles with 12 volt, negative-ground electrical systems. Use of this product in vehicles with positive ground and/or voltages other than 12V may result in damage to the product and will void the warranty.

This product is not certified or approved for use in aircraft.

Do not attempt to “bridge” the outputs of this amplifier with the outputs of a second amplifier, including an identical one.

 

Chassis Ground

 

 

 

 

 

 

Connector

Channels 1 & 2

 

 

(pg. 5)

 

 

+12 V Power

 

 

Remote Turn-On

Speaker Outputs

 

 

 

 

 

(pg. 8)

 

Connector

 

 

 

Connector

 

 

(pg. 4)

 

 

 

 

(pg. 5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PLANNING YOUR INSTALLATION

It is important that you take the time to read this manual and that you plan out your installation carefully. The following are some considerations that you must take into account when planning your installation.

Cooling Efficiency Considerations:

The outer shell of your JL Audio amplifier is designed to remove heat from the amplifier circuitry. For optimum cooling performance, this outer shell should be exposed to as large a volume of air as possible. Enclosing the amplifier in a small, poorly ventilated chamber can

lead to excessive heat build-up and degraded performance. If an installation calls for an enclosure around the amplifier, we recommend that this enclosure be ventilated with the aid of a fan. In normal applications, fan-cooling is not necessary.

Channels 3 & 4

Channels 5 & 6

Speaker Outputs

Speaker Outputs

 

 

 

 

 

(pg. 8)

 

 

(pg. 8)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mounting the amplifier upside down is strongly discouraged.

If mounting the amplifier under a seat, make sure there is at least 1 inch (2.5 cm) of space above the amplifier’s outer shell to permit proper cooling.

Safety Considerations:

Your amplifier needs to be installed in a dry, well-ventilated environment and in a manner which does not interfere with your vehicle’s safety equipment (air bags, seat belt systems, ABS brake systems, etc.). You should also take the time to securely mount the amplifier using the supplied screws so that it does not come loose in the event of a collision or a sudden jolt to the vehicle.

Stupid Mistakes to Avoid

Check before drilling any holes in your vehicle

to make sure that you will not be drilling

through a gas tank, brake line, wiring harness or

other vital vehicle system.

• Do not run system wiring outside or underneath

the vehicle. This is an extremely dangerous

practice which can result in severe damage to

your vehicle and person.

• Protect all system wires from sharp metal

edges and wear by carefully routing them,

tying them down and using grommets and

 

Power

Ch. 1 & 2 Input

Ch. 1 & 2 Filter

 

Ch. 3 & 4

 

Input Voltage

Status

 

Sensitivity

Frequency

 

Filter Mode

 

Selection

Indicator

 

Control

Selector

 

Selection

 

(pg. 6)

(pg. 9)

 

(pg. 6)

Ch. 1 & 2

(pg. 8)

Ch. 3 & 4

(pg. 7)

Ch. 3 & 4

Channels 3 & 4

Protection Status

Filter Mode

Input Sensitivity

Filter Frequency

Preamp Input Jacks

 

Indicator

 

Selection

 

Control

 

Selector

(pg. 6)

 

(pg. 9)

 

(pg. 7)

 

(pg. 6)

 

(pg. 8)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Channels 1 & 2

Channels 5 & 6

 

 

Bass Boost

 

Ch. 5 & 6

 

 

 

 

Ch. 5 & 6

Preamp Input Jacks

Preamp Input Jacks

 

 

On/Off Switch

 

Input Sensitivity

 

Filter Frequency

(pg. 6)

(pg. 6)

 

 

 

(pg. 8)

 

Control

Ch. 5 & 6

Selector

 

 

 

 

 

 

 

Jack for

 

 

 

 

Input Mode

(pg. 6)

(pg. 8)

 

 

 

 

 

 

 

Remote Bass

 

 

 

Switch

 

 

 

 

Filter Mode

 

 

 

 

 

 

 

Control Knob

 

 

 

(pg. 6)

 

 

 

 

Selection

 

 

 

 

 

 

 

 

 

 

 

(pg. 8)

 

 

 

 

 

 

 

 

 

 

 

 

(pg. 7)

 

 

 

 

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JL AUDIO A6450

loom where appropriate.

• Do not mount the amplifier in the engine

compartment, under the vehicle, on the roof

or in any other area that will expose the

amplifier circuitry to the elements.

JL AUDIO A6450

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Contents A6450 Protect Your Hearing Installation ApplicationsPlanning Your Installation Serial NumberProduct Description Typical Installation SequencePower Connections Fuse RequirementsInput Sensitivity Controls Input SectionInput Voltage Range Filter ControlsSpeaker Outputs Tuning Hint If you are using the A6450 to driveBass Boost Controls Bridging ConsiderationsServicing Your JL Audio Amplifier Amplifier Status Indicator Lights & Protection CircuitrySystem Configurations BI-AMPLIFIED SystemsNext, turn your attention to the Channel One pair of stereo outputs and dedicated subwoofer outputsIndependent level control of all three channel pairs Appendix C Appendix aAppendix B My amplifier doesn’t turn on Appendix D Trouble ShootingHow do I properly set the input sensitivity on my amplifier My amplifier turns on, but there is no outputInstallation Notes JL Audio, Inc Limited Warranty Amplifiers USAIf you need service on your JL Audio product International Warranties

A6450 specifications

The JL Audio A6450 is a versatile and powerful amplifier designed to enhance a vehicle's audio system. Renowned for its high-quality sound reproduction and user-friendly features, this amplifier seamlessly integrates with various audio setups, making it a go-to choice for audiophiles and casual listeners alike.

One of the standout features of the A6450 is its flexible power configuration. It delivers a maximum output of 75 watts per channel at four ohms, providing sufficient power to drive multiple speakers without compromising on sound quality. Moreover, it can operate in a 2-channel mode, pushing up to 150 watts per channel at two ohms. This versatility allows users to tailor their audio experience to specific listening preferences and system requirements.

The A6450 employs cutting-edge technology to ensure pristine audio fidelity. Its Class A/B topology delivers warm, rich sound, ideal for high-fidelity listening. The amplifier also boasts a sophisticated onboard DSP (Digital Signal Processing) system, allowing for precise tuning and customization of the sound output. Users can easily adjust parameters such as crossover frequency, phase, and time alignment, leading to a more immersive listening experience.

Another notable characteristic of the A6450 is its compact design, enabling easy installation in a wide range of vehicles. With dimensions that make it suitable for tight spaces, the amplifier is engineered with a robust chassis that ensures durability and dissipates heat effectively. This build quality is complemented by high-grade components that contribute to its reliability and longevity.

Furthermore, the A6450 features differential-balanced inputs, which minimize noise and interference, ensuring a clean signal path for optimal performance. The amplifier is also equipped with a remote level control feature, giving users convenient access to adjust the volume from their seat without having to reach for the head unit.

In summary, the JL Audio A6450 stands out in the crowded amplifier market for its powerful output, state-of-the-art technologies, and compact design. Its ability to produce high-quality sound while offering user-friendly features makes it an excellent choice for anyone looking to elevate their car audio experience. Whether you're an audio enthusiast or just someone who appreciates rich sound, the A6450 is designed to meet and exceed expectations.