JL Audio E6450 System Configurations, BI-AMPLIFIED Systems, BI-AMPLIFIED System with the e6450

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SYSTEM CONFIGURATIONS

The e6450 is a flexible amplifier, well-suited for a multitude of system configurations. In this section, the most likely configurations are explained in detail.

Once you have selected your desired configuration, you can use the amplifier panel drawing on pages 16 & 17 to mark the required switch positions for easy reference.

BI-AMPLIFIED SYSTEMS

Bi-amplified systems are defined as systems in which separate amplifier channels drive low-frequency (LF) and high-frequency (HF) speakers and are separately filtered to send appropriate frequency ranges to each speaker system.

The most common application of bi-amplification in mobile audio is to drive a subwoofer system from one or more amplifiers or channels and component speakers from separate amplifiers or channels.

The e6450 is designed to work as the only amplifier in a bi-amplified system.

BI-AMPLIFIED SYSTEM WITH THE e6450

In this configuration, channels 5&6 of the e6450 will drive subwoofers (stereo 75W x 2 at 2or bridged 150W x 1 at 4) with low-pass filtering. Channels 1&2 and channels 3&4 will drive component speakers in stereo (75W x 4 at 2) with high-pass filtering.

Input connection options for a bi-amplified system with one e6450 are as follows:

A) No User Adjustability

Required: a basic source unit or processor with a single pair of stereo outputs.

Input Connections: a single pair of stereo 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 e6450 (select “SUM” on the “Input Mode” switch in the “Channel 5 & 6 Controls” section). Result: the relative level of the LF and HF channels will be fixed by the e6450’s “Input Sens.” settings and will not be user adjustable from the front of the vehicle.

B)Fade Front vs. Rear with no Subwoofer Level Control

Required: a basic source unit or processor with two pairs of stereo outputs.

Input Connections: one pair of stereo source unit outputs is connected to the “CH 1 (Left)” and “CH

2 (Right)” inputs and the second pair of stereo source unit outputs is connected to the

“CH 3 (Left)” and “CH 4 (Right)” inputs of the e6450 (select “SUM” on the “Input Mode” switch in the “Channel 5 & 6 Controls” section).

Result: the relative level of the LF and HF channels will be fixed by the e6450’s “Input Sens.” settings and will not be user adjustable from the front of the vehicle.

C)Fade Subwoofer Level vs. HF Level Required: a basic source unit or processor with two pairs of stereo outputs.

Input Connections: the first 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 e6450.The second stereo pair of source unit outputs 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 fade or control the level of the LF channels relative to the HF channels via the source unit’s fader control without exceeding the maximum clean output level set by each amplifier section’s “Input Sens.” controls.

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 e6450.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.

! IMPORTANT

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 12) for details.

Crossover Setup for Bi-Amplified System with one e6450:

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.” (100 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, 100 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 12), 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 13).

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JL AUDIO e6450

JL AUDIO e6450

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Contents N e r ’ s m a n u a l Protectyour Hearing Installation ApplicationsPlanningyour Installation Serial NumberProduct Description Typical Installation SequencePower Connections Fuse RequirementsInput Section Amplifier ControlsFilter Controls Speaker Outputs Amplifier Status Indicator Lights Protection CircuitryBass Boost Controls Bridging ConsiderationsBI-AMPLIFIED Systems System ConfigurationsNo User Adjustability BI-AMPLIFIED System with the e6450Appendix a Appendix BAppendix C Appendix D Trouble Shooting MY Amplifier DOESN’T Turn on MY Amplifier Turns ON, but There is no OutputHOW do I Properly SET the Input Sensitivity on MY Amplifier Installation Notes JL Audio e6450 Limited Warranty Amplifiers USA E6450MAN-CH-03-2003

E6450 specifications

The JL Audio E6450 is a versatile amplifier designed for car audio enthusiasts seeking high performance and reliability. This 4-channel amplifier is part of JL Audio's E-Series, which is known for its exceptional sound quality and robust construction, making it suitable for a wide range of audio systems.

One of the standout features of the E6450 is its compact size, allowing for easy installation in various vehicle types. Despite its small footprint, this amplifier delivers impressive power output. It can provide up to 75 watts per channel into a 4-ohm load, enabling it to drive a range of speakers effectively. Moreover, it can bridge its channels to produce 150 watts at 4 ohms, allowing for a flexible setup that can accommodate both front and rear speakers or drive a subwoofer.

The E6450 employs advanced technologies to optimize audio performance. Its sophisticated input circuitry ensures compatibility with various audio sources, including factory and aftermarket head units. The amplifier is equipped with differential-balanced inputs that help eliminate noise and interference, ensuring a clean and clear audio signal.

Another noteworthy aspect of the E6450 is its built-in crossover network. The fully adjustable high-pass and low-pass filters allow users to tailor the frequency response according to their specific audio needs, ensuring seamless integration with other components in the sound system. This feature is particularly useful for users who wish to pair the amplifier with subwoofers or other speakers that require distinct frequency ranges for optimal performance.

JL Audio has also incorporated thermal management into the E6450 to ensure longevity and reliability during operation. Its temperature-sensitive protection circuitry prevents overheating, allowing the amplifier to perform under varying load conditions without risking damage.

In terms of build quality, the E6450 is constructed with high-quality materials that are designed to withstand the rigors of vehicle use. Its robust casing provides effective protection against the elements, while the stylish design fits well with modern car interiors.

Overall, the JL Audio E6450 stands out as a reliable and high-performing amplifier suitable for both novice and experienced car audio enthusiasts. Its combination of power, advanced technology, flexible installation options, and rugged construction make it a compelling choice for enhancing your vehicle's audio system.