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OWNER'S MANUAL
Thank you for purchasing a JL Audio amplifier for
your marine sound system.
Your amplifier has been designed and manufactured to exacting
standards in order to ensure years of musical enjoyment in your vehicle.
For maximum performance, we highly recommend that you have
your new amplifier installed by an authorized JL Audio dealer. Your
authorized dealer has the training, expertise and installation equipment
to ensure optimum performance from this product. Should you
decide to install the amplifier yourself, please take the time
to read this manual thoroughly so as to familiarize yourself
with its installation requirements and setup procedures.
If you have any questions regarding the instructions in this
manual or any aspect of your amplifier's operation, please contact your
authorized JL Audio dealer for assistance. If you need further assistance,
please call the JL Audio Technical Support Department
at (954) 443-1100 during business hours.
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Table of Contents
Related Manuals for JL Audio M4500
Summary of Contents for JL Audio M4500
- Page 1 For maximum performance, we highly recommend that you have your new amplifier installed by an authorized JL Audio dealer. Your authorized dealer has the training, expertise and installation equipment to ensure optimum performance from this product.
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Page 2: Installation Applications
Preamp Input Jacks Preamp Output Bass Boost Selection Switch (pg. 6) Jacks On/Off Switch (pg. 8) Jack for Ch. 3 & 4 (pg. 8) (pg. 8) Remote Bass Input Selection Control Knob Switch (pg. 8) (pg. 6) JL AUDIO M4500... -
Page 3: Planning Your Installation
1 inch (2.5 cm) of space above the amplifier’s outer shell to permit Cooling Efficiency Considerations: proper cooling. The outer shell of your JL Audio amplifier is designed to remove heat from the amplifier Safety Considerations: circuitry. For optimum cooling performance,... -
Page 4: Product Description
Absolute Symmetry™ Class A/B technology amplifier is not necessary. 9) Connect the remote turn-on wire to for all channels. The M4500 can be operated with a wide the amplifier. 10) Connect the input cables to the amplifier. variety of source units and system configurations. -
Page 5: Fuse Requirements
(10 AWG - 6 AWG) wire to connect to If you are installing the M4500 with other ground, this wire should also be upgraded to 4 amplifiers and wish to use a single main power... -
Page 6: Input Section
INPUT SECTION The M4500’s input section allows you to send To use speaker-level sources, splice the speaker signals to the amplifier section through the use of output wires of the source unit onto a pair of RCA either two or four differential-balanced inputs. -
Page 7: Filter Controls
M4500’s channel pairs in a Active filters are more stable than passive filters bi-amplified system. -
Page 8: Bass Boost Controls
BASS BOOST CONTROLS 2) “Sum”: When the M4500 is being used to drive front and rear speaker systems, this preamp output mode will deliver a summed front/rear stereo signal to a subwoofer amplifier, while permitting fading of the front and rear speaker systems from the source unit. -
Page 9: Speaker Outputs
Information: If you wish to send a left-only which reduces power output. or right-only signal to a pair of the M4500’s channels, use a “Y-Adaptor” to split the single BRIDGING CONSIDERATIONS channel signal into both left and right RCA Bridging is the practice of combining the inputs. - Page 10 JL Audio dealer so that it may be sent in to JL Audio for service. 2) “Protect” (Red): Indicates that the amplifier There are no user serviceable parts or fuses inside protection circuitry has been activated to the amplifier.
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Page 11: System Configurations
Once you have selected your desired unit outputs is connected to the “CH 1 (Left)” and “CH 2 (Right)” inputs of the M4500. The configuration, you can use the amplifier panel drawing on pages 18 & 19 to mark the required second stereo pair of source unit outputs is switch positions for easy reference. - Page 12 HF channels. The relative level of the front and This configuration requires that the separate rear HF channels will be fixed by the M4500’s subwoofer amplifier has a built-in low-pass filter. “Input Sens.” settings and will not be user All JL Audio amplifiers have this feature.
- Page 13 “Input Sens.” controls of the M4500 use the method shown in Appendix A (page 14). For precise filter frequency information for the M4500 refer to Appendix B (page 15). Refer to the subwoofer owner’s manual for proper adjustments.
- Page 14 Following the directions below will allow the target voltage is observed with the voltmeter. 9) Once you have adjusted the M4500 to its installer to adjust the input sensitivity of each amplifier channel pair simply and easily in just a...
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Page 15: General Specifications
Switch-selectable to pass signal from CH 1&2 inputs only or from all four inputs (summed). Dimensions(LxWxH): 13.8" x 9.25" x 2.50" (350mm x 235mm x 63.5mm) Due to ongoing product development, all specifications are subject to change without notice. JL AUDIO M4500... -
Page 16: Appendix D: Troubleshooting
Check the input connectors to ensure that they all are making good contact with the input jacks on the amplifier. JL AUDIO M4500... - Page 17 “My amplifier shuts off once in a while, usually at higher volumes” Check your voltage source and grounding point. The power supply of the M4500 will operate with charging system voltages down to 10V. Shutdown problems at higher volume levels can occur when the charging system voltage drops below 10V.
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Page 18: Installation Notes
INSTALLATION NOTES: Use this diagram to document your amplifier’s switch and control positions. JL AUDIO M4500... - Page 19 JL AUDIO M4500...
- Page 20 All warranty returns should be sent to JL AUDIO’s Amplifier Service Facility freight-prepaid through an authorized JL AUDIO dealer and must be accompanied by proof of purchase (a copy of the original sales receipt). Direct returns from consumers or non-authorized dealers will be refused unless specifically authorized by JL AUDIO with a valid return authorization number.