User manual JBL L7BLKL

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JBL L7BLKL : Download the complete user guide (579 Ko)

Manual abstract: user guide JBL L7BLKL

Detailed instructions for use are in the User's Guide.

[. . . ] · Disconnect the negative (­) lead from your vehicle's battery. · Check clearances on both sides of a planned mounting surface before drilling any holes or installing any screws. · At the installation sites, locate and make a note of all fuel lines, hydraulic brake lines, vacuum lines and electrical wiring. [. . . ] Use extreme caution when cutting or drilling in and around these areas. · Before drilling or cutting holes, use a utility knife to remove unwanted fabric or vinyl to keep material from snagging in a drill bit. · When routing cables, keep inputsignal cables away from power cables and speaker wires. · When making connections, ensure that they are secure and properly insulated. · If the amplifier's fuse must be replaced, use only the same type and rating as that of the original. Do not substitute another kind. Warning: Playing loud music in an automobile can permanently damage your hearing as well as hinder your ability to hear traffic. JBL accepts no liability for hearing loss, bodily injury or property damage resulting from use or misuse of this product. Choosing a Location and Mounting the Amplifier Amplifiers need air to stay cool. Suitable locations are under seats (provided the amplifier doesn't interfere with the seat-adjustment mechanism), in the trunk or in any location that provides enough air for the amp to cool itself. Do not mount the amplifier with the heat-sink fins facing downward; this makes convection cooling of the amplifier impossible. Mount the amplifier so that it is not damaged by the feet of back-seat passengers or shifting cargo in the trunk. If your radio has only speaker-level outputs, you must purchase a speakerlevel-to-line-level adapter, commonly sold as an accessory. System Setup and Adjustment Refer to figures 1­4 for location of adjustment switches and controls. Electronic Crossover (for LC-A752 and LC-A504) The electronic crossover can be selected as a 12dB/oct high-pass filter (HPF), 12dB/oct low-pass filter (LPF) or it can be defeated (FLAT). The crossover frequency can be set at any frequency between 32Hz and 320Hz. Setting Input Level Initially, turn the input-sensitivity LEVEL control to its maximum (counterclockwise) position. Turn on the source unit and increase the volume control until it is approximately three-quarters of maximumoutput level. Slowly increase the input LEVEL control (clockwise) while listening to the quality of the reproduced sound. When you hear distortion on the music peaks, turn the LEVEL control back slightly. Turning the LEVEL control up farther WILL NOT INCREASE THE OUTPUT POWER OF YOUR AMP!It will only decrease the amount of volume control rotation before the amp is at full output power. [. . . ] It will only decrease the amount of volume control rotation before the amp is at full output power. It will also increase the amount of extraneous noise present in your system. Model No. LC-A304 FRONT PANEL LINE INPUT INPUT LEVEL FRONT PANEL FRONT REAR LINE INPUT INPUT LEVEL POWER INPUT LEVEL LINE INPUT POWER RIGHT RIGHT RIGHT LEFT 4V 250mV LEFT 4V 250mV 4V 250mV LEFT REAR PANEL OUTPUT LEFT RIGHT FUSE 20 AMP BATT(+) POWER REM REAR OUTPUT GND (-) LEFT RIGHT REAR PANEL FRONT OUTPUT LEFT RIGHT BATT(+) POWER REM GND (-) FUSE 20 AMP BRIDGED BRIDGED BRIDGED Figure 1 Figure 3 Model No. [. . . ]

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