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A6450
six-channel system 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 equip
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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 A6450 is a six-channel, (90 cm) from the amplifier to the ground The A6450’s “+12 VDC” 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 4 AWG 6 AWG) wire to ground the battery to the Absolute Symmetry™ Class A/B technology necessary to upgrade the battery ground wire. power wire. 4 AWG is a minimum power wire size vehicle chassis and t
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INPUT SECTION INPUT SENSITIVITY CONTROLS The A6450’s input section allows you to send Input Voltage Range: Once the appropriate “Input Voltage” range and the speakers), which are acceptable and signal to the amplifier section through the use of A wide range of signal input voltages can has been selected, the controls labeled “Input commonly used for filtering between mid- two, four or six differential-balanced inputs. be accommodated by theA6450’s CH 1&2 and Sens.” located in each “Channel Cont
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BASS BOOST CONTROLS SPEAKER OUTPUTS “LP” (Low-Pass): Configures the filter to The A6450’s speaker outputs are designed to When a pair of channels are bridged, they attenuate frequencies above the selected filter accept 16 AWG - 8 AWG wire. will deliver 150W x 1 into a 4 ohm load or frequency at a rate of 12dB per octave. This is Each pair of the A6450’s channels are designed to 90W x 1 into an 8 ohm load. Operating a useful for connection of subwoofer(s) to one deliver power into speaker loa
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AMPLIFIER STATUS INDICATOR LIGHTS & SYSTEM CONFIGURATIONS PROTECTION CIRCUITRY Low-Voltage protection: The A6450 is a flexible amplifier, well-suited B) Fade Front vs. Rear with no Subwoofer There are two status indicator lights on the If the car’s supply voltage drops below 10 for a multitude of system configurations. In Level Control: input / control end of the amplifier. volts, the entire amplifier will shut itself off to this section, the most likely configurations are Re q u i re d : a bas
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D) Subwoofer Level Control Only: Crossover Setup for Bi-Amplified System Re q u i re d : a source unit or processor with with one A6450: one pair of stereo outputs and dedicated Once the input sections have been configured subwoofer outputs. appropriately, go to the “Channel 5 & 6 In p u t C o nn ec t i o n s : the stereo pair of source Controls”. Select “LP” (low-pass) on the “Filter unit outputs each split with a “Y-Adaptor” Mode” switch and an appropriate “Filter Freq.” allowing the left
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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 A6450 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 A6450 to its General Specifications: Detent Panel Actual amplifier channel pair simply and easily in just a maximum low-distorti
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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 A6450 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 A6450 JL AUDIO A6450 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
