Instruction/ maintenance manual of the product A3000GTi JBL
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car audio pow er amplifier o wner’ s manual THANK Y OU for purchasing a JBL A6000GT i or A3000GT i 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.
INST ALLA TION W ARNING: Playing loud music in an automobile can hinder your ability to hear traffic and permanently damage your hearing. We recommend listening at low or moderate levels while driving your car . JBL accepts no liability for hearing loss, bodily injury or property damage resulting from the use or misuse of this product.
DESIGNING A SPEAKER SY STEM FOR THE GTi AMPLIFIER NOTE: Although the JBL A6000GT i or A3000GT i amplifier will drive a system made up of any subwoofers, we recommend using JBL GT i subwoofers with GT i amplifiers.
4 SUPPL YING POWER TO THE GTi AMPLIFIER POWER IN IS POWER OUT In order to get full power out of your amplifier , you must provide full power to your amplifier . That’ s a basic rule of physics. The A6000GT i amplifier can draw nearly 800 amperes when reproducing sine waves at full output.
5 MAKING THE CONNECTIONS POWER CONNECTIONS Use 0-gauge cable to connect the amplifier’ s GND – terminal directly to the vehicle’ s chassis (see Figure 5). Scrape off all paint from the metal area for a good, clean ground connection. Make sure the ground wire is as short as possible and is connected to metal on the vehicle’ s body.
6 MAKING THE CONNECTIONS A6000GTi SPEAKER CONNECTIONS The A6000GT i is a 2-channel amplifier designed to drive subwoofers only . The left and right input signals are combined inside the amplifier to provide a mono output signal, no matter which output mode is selected.
7 MAKING THE CONNECTIONS A3000GTi SPEAKER CONNECTIONS Included below are three application diagrams that will help you plan your A3000GT i installation. Figures 10 through 12 show how to configure the JBL A3000GT i amplifier for bridged-mono, parallel-mono and 2-channel operation (also see Setting Up the GT i Amplifier).
8 SETTING UP THE GTi AMPLIFIER SETTING THE CROSSO VER IMPORT ANT : If you plan to use the A3000GT i to drive full-range speakers, set the crossover mode switch to FLA T and skip to the next section, “Setting Input Sensitivity . ” 1. Depending on your system plan, set the A3000GT i’ s crossover mode switch to LP (low-pass) or HP (high- pass).
9 SETTING UP THE GTi AMPLIFIER REPLACING THE FUSE OR NEON TUBES The JBL A6000/A3000GT i amplifier is equipped with an internal fuse, a 20-inch neon tube and two 6-inch neon tubes.
10 SETTING UP THE GTi AMPLIFIER 7. Using a T -15 screwdriver , remove the two T orx-head screws on the display board and set them aside (see Figure 16 below). Disconnect the ribbon cable from display board. 8. Using a T -15 screwdriver , remove the 16 T orx-head screws on the perforated shield and set them aside (see Figure 16).
11 TROUBLESHOOTING SYMPTOM LIKEL Y CAUSE SOLUTION No audio No voltage at power Check BA TT+, REMOTE and (Power LED is off) or remote terminal GND – terminals with VOM for blown fuse or poor connecti.
JBL Consumer Products 250 Crossways Park Drive, Woodbury , NY 11797 USA © 2004 Harman International Industries, Incorporated JBL and Crown are registered trademarks of Harman International Industries, Incorporated. Part No. GTIAMPOM4/04 Features, specifications and appearance are subject to change without notice.
An important point after buying a device JBL A3000GTi (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought JBL A3000GTi yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data JBL A3000GTi - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, JBL A3000GTi you will learn all the available features of the product, as well as information on its operation. The information that you get JBL A3000GTi will certainly help you make a decision on the purchase.
If you already are a holder of JBL A3000GTi, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime JBL A3000GTi.
However, one of the most important roles played by the user manual is to help in solving problems with JBL A3000GTi. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JBL A3000GTi along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
