D)Subwoofer Level Control Only: Required: a source unit or processor with

one pair of stereo outputs and dedicated subwoofer outputs.

Input Connections: the stereo pair of source unit outputs each split with a “Y-Adaptor” allowing the left signal to be sent to the “CH 1 (Left)” and “CH 3 (Left)” inputs and the right signal to be sent to the “CH 2 (Right)” and “CH 4 (Right)” inputs of the A6450. The source unit’s dedicated subwoofer outputs are connected to the “CH 5 (Left)” and

“CH 6 (Right)” inputs (select “Discrete” on the “Input Mode” switch in the “Channel 5 & 6 Controls” section).

Result: in this mode, the user has the ability to control the absolute level of the LF channels relative to the HF channels.

E)Independent level control of all three channel pairs:

Required: a source unit or processor with two pairs of stereo outputs and dedicated subwoofer outputs.

Input Connections: one pair of stereo source unit outputs is connected to the “CH 1 (Left)” and “CH 2 (Right)” inputs, the second pair of stereo source unit outputs is connected to the “CH 3 (Left)” and “CH 4 (Right)” inputs and the source unit’s dedicated subwoofer output is connected to the “CH 5 (Left)” and “CH 6 (Right)” inputs (select “Discrete” on the “Input Mode” switch in the “Channel 5 & 6 Controls” section).

Result: in this mode, the user has the ability to control the absolute level of the LF channels as well as both pairs of HF channels.

When using a source unit’s dedicated subwoofer output, set the “Input Sens.” of any channels receiving input from the subwoofer output with the source unit’s subwoofer level control set at 3/4 of full output. See Appendix A (page 14) for details.

Crossover Setup for Bi-Amplified System with one A6450:

Once the input sections have been configured appropriately, go to the “Channel 5 & 6 Controls”. Select “LP” (low-pass) on the “Filter Mode” switch and an appropriate “Filter Freq.” (80 Hz is a good starting point).

Next, turn your attention to the “Channel 1 &

2 Controls” and “Channel 3 & 4 Controls” and select “HP” (high-pass) on the “Filter Mode” switches and an appropriate “Filter Freq.” (again, 80 Hz is a good starting point).

After proper adjustment of the “Input Sens.” controls for all three channel pairs using the method shown in Appendix A (page 14), you can fine tune filter frequencies and attenuate any pair of channels to achieve proper balance. For precise filter frequency information refer to Appendix B (page 15).

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JL AUDIO A6450

JL AUDIO A6450

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JL Audio A6450 One pair of stereo outputs and dedicated subwoofer outputs, Next, turn your attention to the Channel
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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.
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