Notice JBL GTO 6000

« rming a variety of mechanical and electrical procedures. Although these instructions explain, in a general sense, how to install GTO amplifiers, they may not show the exact installa- tion methods for your particular vehicle.If you feel you lack the tools or necessary experience, ask your authorized JBL car-audio dealer about professional installation options. Installation Warnings and Tips •Always wear pro- tective eyewear when using tools. •Turn off all audio systems and other elec- trical devices before you start. •Disconnect the negative (-) lead from your vehicle’s battery. •Check clearances on both sides of a plan- ned mounting surface before drilling any holes or installing any screws.Remember that the screws can extend behind the surface. •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 uti- lity knife to remove unwanted fabric or vinyl to keep material from snagging in a drill bit. •When routing cables, keep input- signal cables away from power cables and spea- ker 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 substi- tute another kind. Warning:Playing loud music in an automobile can permanently damage your hearing as well as hinder your ability to hear traffic.We recom- mend listening at low levels while in your car. JBL accepts no liability for hearing loss, bodily injury or property damage resulting from use or misuse of this Wiring the Input-Signal Connections Connect a pair of signal cables with RCA-type ends between the connectors on the amplifier and the RCA- type signal connectors on the source unit.If your radio has only speaker-level outputs, you must pur- chase a speaker-level-to-line-level adapter, commonly sold as an accessory. System Setup and Adjustement Refer to figures 1-3 for location of adjustement switches and controls. Electronic Crossover 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 (OFF).The crossover fre- quency can be set at any frequency between 30Hz and 320Hz. Input Sensitivity 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 maximum-output 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.This is the maximum undistorted output level of your system.Turning the LEVEL control up farther WILLNOTINCREASETHEOUTPUTPOWEROF YOURAMP! It will only decrease the amount of volu- me control rotation before the amp is at full output power.It will also increase the amount of extraneous noise in your system. 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-adjustement mechanism), in the trunk or in any location that provides enough air for the amp to cool itself... »