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APPENDIX D: TROUBLE SHOOTING “How do I properly set the input sensitivity on my amplifier” “My amplifier shuts off once in a while, usually at higher volumes” Please refer to Appendix A (page 14) to set the input sensitivity for Check you r voltage source and grounding point. The power supply maximum, low-distortion output. of the A4300 will operate with charging system voltages “My amplifier doesn’t turn on” down to 10V. Shutdown problems at higher volume levels Check t he fuse, not jus
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INSTALLATION NOTES: Use this diagram to document your amplifier’s switch and control positions. 18 JL AUDIO A4300 JL AUDIO A4300 19
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LIMITED WARRANTY - AMPLIFIERS (USA) JL AUDIO warrants this product to be free of defects in materials and workmanship for a period of ninety (90) days from the original date of purchase. The warranty term is extended to two (2) years if installation is performed or approved by an authorized JL AUDIO dealer (proof of installation or approval required on purchase receipt). This warranty is not transferrable and applies only to the original purchaser from an authorized JL AUDIO dealer. Should s
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A4300
four-channel full-range amplifier
OWNER’S MANUAL
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
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PROTECT YOUR HEARING! INSTALLATION APPLICATIONS PLANNING YOUR INSTALLATION We value you as a long-term customer. For This amplifier is designed for operation in It is important that you take the time to read Mounting the amplifier upside down is that reason, we urge you to practice restraint in vehicles with 12 volt, negative-ground electrical this manual and that you plan out your strongly discouraged. the operation of this product so as not to damage systems. Use of this product in vehicles w
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PRODUCT DESCRIPTION The JL Audio A4300 is a four-channel, (90 cm) from the amplifier to the ground The A4300’s “+12VDC” and “Ground” Many vehicles employ small (10 AWG - full-range audio amplifier utilizing patented connection point. In some vehicles, it may be connections are designed to accept 8 AWG - 6 AWG) wire to ground the battery to the Absolute Symmetry™ Class A/B technology necessary to upgrade the battery ground wire. 4 AWG power wire. 8 AWG is a minimum power vehicle chassis and to
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INPUT SECTION The A4300’s input section allows you to send To use speaker-level sources, splice the speaker Do not increase any “Input Sens.” setting for 1) “Filter Mode” Control: The A4300 employs a signal to the amplifier section through the use of output wires of the source unit or small amplifier any channel(s) of any amplifier in the system 12dB per octave filter for each pair of channels either two or four differential-balanced inputs. onto a pair of RCA plugs for each input pair. beyon
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BASS BOOST CONTROLS SPEAKER OUTPUTS 2) “Sum”: When the A4300 is being used to drive The A4300’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. will deliver 150W x 1 into a 4 ohm load or output mode will deliver a summed front/rear Each pair of the A4300’s channels are 90W x 1 into an 8 ohm load. Operating a stereo signal to a subwoofer amplifier, while designed to deliver power into speaker loa
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AMPLIFIER STATUS INDICATOR LIGHTS & SYSTEM CONFIGURATIONS PROTECTION CIRCUITRY Low-Voltage protection: The A4300 is a flexible amplifier, well-suited B) Fade Subwoofer Level vs. HF Level There are two status indicator lights on the If the car’s supply voltage drops below 10 for a multitude of system configurations. In Re q u i re d : a source unit or processor with two input / control end of the amplifier. volts, the entire amplifier will shut itself off to this section, the most likely confi
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Next, turn your attention to the “Channel 1 & B) Fade Subwoofer Level vs. HF Level: D) Front to Rear HF Fading and Subwoofer Set the subwoofer amplifier’s “Input Sens.” 2 Controls” and select “HP” (high-pass) on the Re q u i re d : a source unit or processor with front Level Control: with the source unit’s subwoofer level control “Filter Mode” switch and an appropriate “Filter and rear pairs of stereo outputs. Re q u i re d : a source unit or processor with set at 3/4 of full output. Freq.” (a
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APPENDIX A: APPENDIX B: APPENDIX C: Input Sensitivity Level Setting 8) Increase the “Input Sens.” control until the Precise Frequency Selection Chart A4300 Specifications 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 A4300 to its General Specifications: Detent Panel Actual amplifier channel pair simply and easily in just a maximum low-distorti
