JL Audio M4500 Owner's Manual
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JL Audio M4500 Owner's Manual

JL Audio M4500 Owner's Manual

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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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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.

  • Page 2: Protect Your Hearing

    Cooling Efficiency Considerations: proper cooling. high-power amplifiers are capable of producing use in aircraft. The outer shell of your JL Audio amplifier such high sound pressure levels when connected is designed to remove heat from the amplifier Safety Considerations: amplifier with the outputs of a second amplifier, circuitry.
  • Page 3 (10 AWG - 6 AWG) wire to connect to The M4500 can be operated with a wide the amplifier. If you are installing the M4500 with other ground, this wire should also be upgraded to 4 variety of source units and system configurations.

  • Page 4: Input Section

    1&2 higher sensitivity (louder for a given input frequency content at the input to the amplifier. one or both of the M4500’s channel pairs in a inputs to channels 1 & 2. voltage). Rotating the control counter-clockwise Active filters are more stable than passive filters bi-amplified system.

  • Page 5: Bass Boost Controls

    BASS BOOST CONTROLS SPEAKER OUTPUTS 2) “Sum”: When the M4500 is being used to drive The M4500’s speaker outputs are designed to When a pair of channels are bridged, they front and rear speaker systems, this preamp accept 16 AWG - 8 AWG wire.

  • Page 6: System Configurations

    JL Audio dealer so bi-amplification in marine audio is to drive a that it may be sent in to JL Audio for service. subwoofer system from one or more amplifiers or C) Subwoofer Level Control Only:...
  • Page 7 Make these adjustments to This configuration requires that the separate rear HF channels will be fixed by the M4500’s Res ult: with this option, the user has the ability to both control sections.
  • Page 8 Following the directions below will allow the target voltage is observed with the voltmeter. “FILTER FREQ” AMP FILTER installer to adjust the input sensitivity of each 9) Once you have adjusted the M4500 to its General Specifications: Detent Panel Actual...

  • Page 9: Appendix D: Troubleshooting

    Please refer to Appendix A (page 14) to set the input sensitivity for Check your voltage source and grounding point. The power supply maximum, low-distortion output. of the M4500 will operate with charging system voltages “My amplifier doesn’t turn on” down to 10V. Shutdown problems at higher volume levels Check the fuse, not just visually, but with a continuity meter.

  • Page 10: Installation Notes

    INSTALLATION NOTES: Use this diagram to document your amplifier’s switch and control positions. JL AUDIO M4500 JL AUDIO M4500...
  • Page 11 International Warranties: Products purchased outside the United States of America are covered only by that country’s distributor and not by JL Audio, Inc. Absolute Symmetry™ Class A/B Amplifier Circuit is covered by U.S. Patent #6,294,959 and is pending in the countries listed below.

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