User manual JBL A6000GTI

[. . . ] 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. INSTALLATION WARNING: Playing loud music in an automobile can hinder your ability to hear traffic and permanently damage your hearing. [. . . ] Be sure to use a power meter that multiplies the incoming voltage and current signals (i. e. , P = E x I) to convert the data to watts. CONNECTING THE SPEAKERS IMPORTANT: As a safety feature and due to the high output voltage capability of the A6000GTi and A3000GTi amplifiers, the SPEAKER OUTPUTS are equipped with a cover that must be in place in order for the amplifier to operate. When the cover is removed, the amplifier will turn off and speaker connections can be made safely. A6000GTi Power Terminals Remote Turn-On (or other turn-on signal) +12 V 85 87 no 87a nc 0-gauge 0-gauge 86 30 Ground SPDT Relay ANN-Type Fuse (500 A or more) 18" Chassis Ground (Bare Metal) RJ45 Connector (GTi Input Panel) 8 1 Ground (also use for acc. gauges) = 8 No Connection = 7 Remote Level Control = 6 Remote Level Control = 5 Figure 5. Power wiring diagram for the JBL A6000GTi amplifier. Use 0-gauge cable to connect the BATT+ terminal directly to the vehicle's battery. If the battery is located in the engine compartment and the BATT+ cable must be routed through the firewall or any metal obstruction, install a wafer-type (ANN) fuse with a current rating of at least 500 amperes and an appropriate fuse holder within 18" of the vehicle's battery (see Figure 5). Batteries 1 = Battery Voltage (to acc. ampere meter) 4 = Remote Level Control IMPORTANT: Do not connect a jumper directly between the REMOTE and LIGHTING terminals. Doing so may burn out the remote turn-on circuits in your source unit. Figure 6. Pinouts for the REMOTE LEVEL RJ45 connector on the A6000GTi or A3000GTi amplifier. 5 MAKING THE CONNECTIONS A6000GTi SPEAKER CONNECTIONS The A6000GTi 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. The A6000GTi can be connected to two independent speaker systems in 2-channel mode. It can be connected to a combination of subwoofers configured as a single load with its channels bridged or connected in parallel. Bridged channels will provide high output voltage for driving loads with a nominal impedance of 2 to 4 ohms. Connecting the channels in parallel will provide the high current necessary to drive loads of 1 to 2 ohms. Included below are three application diagrams that will help you plan your A6000GTi installation. Figures 7 through 9 show how to configure the JBL A6000GTi subwoofer amplifier for bridged-mono, parallel-mono and 2-channel operation (see Setting Up the GTi Amplifier). IMPORTANT: If the nominal impedance of the speaker system is close to 2 ohms, you may try both bridged and parallel configurations to determine which one performs better. Remember to set the output mode switch to the appropriate setting when changing configurations. NOTE: For simplicity, Figures 7 through 9 do not show power, remote and input connections (see page 5). The JBL A6000GTi subwoofer amplifier is set to bridged mode to drive a subwoofer system. Only use this mode when the nominal equivalent or total impedance of the speaker system is 2 ohms or greater. Set Output Mode to 2CH/BR (on input panel) A6000GTi Amplifier (partial output panel) See "Setting The Crossover" on Page 8 to Adjust Crossover Controls Subwoofer System 2 ohms or more Figure 8. [. . . ] Repeat Step 4 for the input panel (see Figure 15). Remove the cover and set it aside (see Figure 15). Removing the input and output screws and the cover from the A6000GTi amplifier. Removing bottom screws and the clear cover from the A6000GTi amplifier. [. . . ]