JL Audio E6450 owner manual Appendix a, Appendix B, Appendix C

Models: E6450

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APPENDIX A:

Input Sensitivity Level Setting

Following the directions below will allow the installer to adjust the input sensitivity of each amplifier channel pair simply and easily in just a few minutes using equipment which is commonly available in installation bays.

Necessary Equipment

Digital AC Voltmeter

CD with a sine-wave test tone recorded at 0 dB reference level in the frequency range to be amplified for that set of channels (50 Hz for subwoofer channels, 1 kHz for a midrange application). Do not use attenuated test tones (-10 dB, -20 dB, etc.).

The Nine-Step Procedure

1)Disconnect the speaker(s) from the amplifier’s speaker output connectors.

2)Turn off all processing (bass/treble, loudness, EQ, etc.) on the source unit, processors (if used) and amplifier. Set fader control to center position and subwoofer level control to 3/4 of maximum (if used to feed the e6450).

3)Turn the “Input Sens.” control all the

way down.

4)Set the source unit volume to 3/4 of full volume. This will allow for reasonable gain overlap with moderate clipping at full volume.

5)Using the chart on this page, determine the target voltage for input sensitivity adjustment according to the nominal impedance of the speaker system connected to the amplifier outputs.

6)Verify that you have disconnected the speakers before proceeding. Play a track with an appropriate sine wave (within the frequency range to be amplified by the e6450) at 3/4 source

unit volume.

7)Connect the AC voltmeter to the speaker

output connectors of the amplifier. If the channel pair is operating in stereo, it is only necessary to measure one channel. If bridged, make sure you test the voltage at the correct connectors (L+ and R–).

8)Increase the “Input Sens.” control until the target voltage is observed with the voltmeter.

9)Once you have adjusted the e6450 to its maximum low-distortion output level, reconnect the speaker(s).The “Input Sens.” controls can now be adjusted downward if the amplifier requires attenuation to achieve the desired system balance.

! IMPORTANT

Do not increase any “Input Sens.” setting for

any amplifier channel or channel pair in the system beyond the maximum level established during this procedure. Doing so will result in audible distortion and possible speaker damage.

It will be necessary to re-adjust the “Input Sens.” for the affected channels if any equalizer boost is activated after setting the “Input Sens.” with this procedure.This applies to any EQ boost circuit, including source unit tone controls or EQ circuits. EQ cuts will not require re-adjustment.

Nom.

Target AC Voltage

Impedance

Stereo

Bridged

8

13.4 V

26.8 V

6

13.4 V

25.6 V

4

13.4 V

24.6 V

 

 

 

3

12.8 V

not recommended

2

12.3 V

not recommended

 

 

 

APPENDIX B:

Precise Frequency Selection Chart

“FILTER FREQ” AMP FILTER

Detent Panel Actual

Number Marking Freq.

Full counter-clockwise: 53

01 . . . . . . . . . . . . . . . . . . . . . . . .53 02 . . . . . . . . .“50” . . . . . . . . .53 03 . . . . . . . . . . . . . . . . . . . . . . . .53 04 . . . . . . . . . . . . . . . . . . . . . . . .54 05 . . . . . . . . . . . . . . . . . . . . . . . .54 06 . . . . . . . . . . . . . . . . . . . . . . . .55 07 . . . . . . . . . . . . . . . . . . . . . . . .55 08 . . . . . . . . .“55” . . . . . . . . .56 09 . . . . . . . . . . . . . . . . . . . . . . . .56 10 . . . . . . . . . . . . . . . . . . . . . . . .57 11 . . . . . . . . . . . . . . . . . . . . . . . .58 12 . . . . . . . . . . . . . . . . . . . . . . . .59 13 . . . . . . . . . . . . . . . . . . . . . . . .62 14 . . . . . . . . .“60” . . . . . . . . .65 15 . . . . . . . . . . . . . . . . . . . . . . . .65 16 . . . . . . . . . . . . . . . . . . . . . . . .66 17 . . . . . . . . . . . . . . . . . . . . . . . .70 18 . . . . . . . . . . . . . . . . . . . . . . . .73 19 . . . . . . . . . . . . . . . . . . . . . . . .77 20 . . . . . . . . .“80” . . . . . . . . .81 21 . . . . . . . . . . . . . . . . . . . . . . . .84 22 . . . . . . . . . . . . . . . . . . . . . . . .88 23 . . . . . . . . . . . . . . . . . . . . . . . .94 24 . . . . . . . . . . . . . . . . . . . . . . .101 25 . . . . . . . . . . . . . . . . . . . . . . .104 26 . . . . . . . . .“120” . . . . . . . .115 27 . . . . . . . . . . . . . . . . . . . . . . .118 28 . . . . . . . . . . . . . . . . . . . . . . .128 29 . . . . . . . . . . . . . . . . . . . . . . .137 30 . . . . . . . . . . . . . . . . . . . . . . .146 31 . . . . . . . . . . . . . . . . . . . . . . .164 32 . . . . . . . . .“150” . . . . . . . .177 33 . . . . . . . . . . . . . . . . . . . . . . .193 34 . . . . . . . . . . . . . . . . . . . . . . .197 35 . . . . . . . . . . . . . . . . . . . . . . .209 36 . . . . . . . . . . . . . . . . . . . . . . .213 37 . . . . . . . . . . . . . . . . . . . . . . .216 38 . . . . . . . . .“200” . . . . . . . .218 39 . . . . . . . . . . . . . . . . . . . . . . .225

Full-clockwise: 225

APPENDIX C:

e6450 Specifications

GENERAL SPECIFICATIONS: Recommended Fuse Value: 60A Recommended Fuse Type: AGU or MaxiFuse™

INPUT SECTIONS:

No. of Inputs: Three Stereo Pairs

Input Type: Differential, noise-cancelling with RCA jack inputs (low-level, three pairs) and multi-pin jack (high-level, two pairs)

Input Range: 200mV - 8V RMS

AMPLIFIER SECTION:

Amplifier Topology: Class AB with patented Absolute Symmetry™ dual N-Channel MOSFET output design Power Supply: Unregulated MOSFET switching type Rated Power (Stereo):

45W RMS x 6 @ 4(12.5V)

75W RMS x 6 @ 2(12.5V) Rated Power (Bridged):

90W RMS x 3 @ 8(12.5V)

150W RMS x 3 @ 4(12.5V)

THD at Rated Power: <0.08% @ 4 ohms per channel (20 Hz - 20 kHz)

Signal to Noise Ratio: >104 dB referred to rated power (A-weighted, 20 Hz-20 kHz noise bandwidth) Frequency Response: 10 Hz - 25 kHz (+0, -1dB) Damping Factor: >200 @ 4per ch./50 Hz,

>100 @ 2per ch. /50 Hz Slew Rate: ± 22V/µs

AMPLIFIER FILTER:

Filter Type: State-variable, 12dB/octave Butterworth with continuously variable cutoff frequency selection from 50-200 Hz. Configurable as Low-Pass or High-Pass. Defeatable.

DIMENSIONS (LxWxH):

17.7" x 9.25" x 2.36" (450mm x 235mm x 60mm)

Due to ongoing product development, all specifications are subject to change without notice.

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JL AUDIO e6450

JL AUDIO e6450

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JL Audio E6450 owner manual Appendix a, Appendix B, Appendix C

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.