JL Audio 450/4V2 owner manual Four-channel system amplifier

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OWNER’S MANUAL

four-channel system amplifier

Thank you for purchasing a JL Audio amplifier for

your automotive 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 and extended warranty

coverage, 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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Contents Four-channel system amplifier Planning Your Installation Installation ApplicationsProtect Your Hearing Serial NumberProduct Description Typical Installation SequenceJL Audio 450/4v2 is a four-channel system As we said, it’s very flexibleFuse Requirements Power ConnectionsCH 1&2 Filter Section Crossover ControlsSpeaker Outputs Preamp Output SectionProtection Circuitry Status Indicator Lights Servicing Your JL Audio AmplifierJL Audio Technical Support BI-AMPLIFIED Systems System ConfigurationsBi-Amplified System with one 450/4v2 Fade HF Front to Rear with Non-Fading Subwoofer Level Cannot be used in this modeICH 1&2 Filter Sectionw4FMFDUix1wPOUIF Input SectionwBOETFMFDUix1wPOUIFiFreqJL Audio 500/1v2 or 1000/1v2 recommended JOQVUTPGUIFW TFMFDUi4chwPOUIFTRI-AMPLIFIED Systems W 4FMFDUi1&2wPOUIFiSignal FromwTXJUDIJOUIFiPreamp Output Sectionw  GJYFECZUIFWTiInput Sens.wTFUUJOHTAppendix B Appendix aHow do I properly set the input sensitivity on my amplifier Appendix C Trouble ShootingMy amplifier doesn’t turn on Leading cause of misdiagnosed amplifier failuresAppendix D CH 1 & 2 Speaker Outputs Installation NotesPage If you need service on your JL Audio product Limited Warranty Amplifiers USAJL Audio, Inc International Warranties