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car audio
power amplifier
owner’s manual
THANK YOU
for purchasing a JBL A6000GTi or A3000GTi amplifier.
For warranty support, please register your purchase at www.jbl.com.
Select Car Audio, then click on Support, and then click on Product Registration.
Also, please retain your original purchase receipt and packing crate
in case you must ship your unit back for service.
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INSTALLATION WARNING: Playing loud music • At the installation sites, locate WARNING: To avoid personal injury and MOUNTING THE in an automobile can hinder your and make a note of all fuel lines, possible product damage, we strongly AMPLIFIER ability to hear traffic and permanently hydraulic brake lines, vacuum lines, urge you to enlist additional help in We strongly recommend first mounting damage your hearing. We recommend and electrical wiring. Use extreme unpacking and moving the a piece
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DESIGNING A SPEAKER SYSTEM FOR THE GTI AMPLIFIER NOTE: Although the JBL A6000GTi or PARALLEL CONNECTIONS To determine the impedance of a ABOUT SPEAKER A3000GTi amplifier will drive a system system of three W15GTi (dual voice- POWER HANDLING The formula for determining the made up of any subwoofers, we coil) subwoofers connected in series- equivalent impedance of the voice coils The RMS power handling rating of recommend using JBL GTi subwoofers parallel, use the series connection connected i
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SUPPLYING POWER TO THE GTI AMPLIFIER POWER IN IS HOW YOUR CHARGING PROGRAM MATERIAL Few stock batteries can provide the POWER OUT SYSTEM WORKS AND CURRENT DEMAND current required to reproduce even short-duration musical peaks. Adding In order to get full power out of your The battery’s job is to start your Music is a combination of loud and a pair of batteries with cold-cranking amplifier, you must provide full power to vehicle. Running the electrical soft sounds, with varying durations capac
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MAKING THE CONNECTIONS POWER CONNECTIONS Connect the source unit’s remote SIGNAL CONNECTIONS For gauges, varying voltages are output turn-on lead to the REMOTE terminal on on selected RJ45 pins to indicate Use 0-gauge cable to connect the Use high-quality twisted-pair RCA audio the amplifier (see Figure 5). Use voltage, current and temperature. amplifier’s GND – terminal directly to cables to connect your source unit’s any convenient gauge wire for the the vehicle’s chassis (see Figure 5). mai
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MAKING THE CONNECTIONS A6000GTi SPEAKER Figure 7. The JBL A6000GTi CONNECTIONS subwoofer amplifier is set Set Output Mode A6000GTi Amplifier to bridged mode to drive a The A6000GTi is a 2-channel amplifier to 2CH/BR (partial output panel) subwoofer system. Only use designed to drive subwoofers only. (on input panel) this mode when the nominal The left and right input signals are com- equivalent or total impedance bined inside the amplifier to of the speaker system is provide a mono output si
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MAKING THE CONNECTIONS A3000GTI SPEAKER Figure 10. The JBL A3000GTi CONNECTIONS amplifier is set to bridged Set Output Mode A3000GTi Amplifier Included below are three application mode to drive a subwoofer to BRIDGE (partial output panel) diagrams that will help you plan your system. Only use this mode (on input panel) A3000GTi installation. Figures 10 when the nominal equivalent through 12 show how to configure or total impedance of the the JBL A3000GTi amplifier for speaker system is 2 ohms
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SETTING UP THE GTI AMPLIFIER SETTING THE CROSSOVER SETTING INPUT SETTING PHASE SETTING DBO SENSITIVITY IMPORTANT: If you plan to use the 1. Initially set the PHASE control to 0°. DBO (or Dynamic Bass Optimizer) is A3000GTi to drive full-range speakers, NOTE: You can use the supplied Play a favorite audio track that has a 12dB/octave high-pass filter with vari- set the crossover mode switch to FLAT REMOTE LEVEL control to fine-tune significant bass output. able frequency (20Hz to 80Hz) and skip
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SETTING UP THE GTI AMPLIFIER REPLACING THE FUSE Figure 14. Removing bottom screws and OR NEON TUBES the clear cover from the A6000GTi amplifier. NOTE: Do not remove the logo The JBL A6000/A3000GTi amplifier badge assembly. is equipped with an internal fuse, a 20-inch neon tube and two 6-inch neon tubes. Should the fuse or a neon tube fail, perform the following steps to replace the part: NOTE: For neon tube replacement, see your authorized JBL car audio dealer to ® purchase new StreetGlow neo
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SETTING UP THE GTI AMPLIFIER 7. Using a T-15 screwdriver, remove the 9. Using a small flat-blade screwdriver, two Torx-head screws on the display disconnect the wiring for the neon board and set them aside tubes. (see Figure 16 below). Disconnect 10. Remove the perforated shield and the ribbon cable from display board. set it aside. 8. Using a T-15 screwdriver, remove the 11. Replace the fuse or a neon tube as 16 Torx-head screws on the follows: perforated shield and set them aside • To replace
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TROUBLESHOOTING SYMPTOM LIKELY CAUSE SOLUTION Power No audio No voltage at power Check BATT+, REMOTE and 6000 Watts Parallel Bridge (Power LED is off) or remote terminal GND – terminals with VOM for A6000GTi blown fuse or poor connection Thermal Signal -18 dB -9 dB E Opt I Opt Fault Internal fuse blown Replace internal fuse (incorrect power (see Replacing the Fuse connections) or Neon Tubes section) No audio Low or high voltage Check BATT+ terminal with (Power LED at power terminal VOM for vol
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Features, specifications and appearance are subject to change without notice. Declaration of Conformity We, Harman Consumer Group International 2, route de Tours 72500 Chateau-du-Loir France declare in own responsibility that the products described in this owner’s manual are in compliance JBL Consumer Products with technical standards: 250 Crossways Park Drive, Woodbury, NY 11797 USA EN 55013:2001 EN 55020:2002 © 2004 Harman International Industries, Incorporated JBL and Crown are registered tr
