User manual JBL GTX8

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Manual abstract: user guide JBL GTX8

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

[. . . ] 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 input-signal cables away from power cables and speaker wires. · When making connections, make certain they are secure and properly insulated. [. . . ] If your source unit does not have a remote turn-on connection, connect the amplifier's (REM) terminal to the vehicle's accessory circuit. Speaker Connections Refer to the application guides on the pages that follow. Speaker connections should be made using a minimum of 1. 5mm2 wire. High-Level Input Connections The GTO75. 2, GTO75. 4 and GTX8 amplifiers are equipped with speaker-level inputs that allow you to add an amplifier to head units that do not have RCA line outputs. The speaker outputs for the source unit should be connected to the amplifier using the supplied connector (square four-wire plug). The GTO301. 1, GTO601. 1 and GTO1201. 1 amplifiers are not equipped with high-level inputs. NOTE: When using the high-level inputs, the AUX outputs can be used to pass a linelevel signal to another amplifier. Wire Gauge Chart Amplifier Maximum Model Current Draw GTO75. 2 34A GTO75. 4 85A GTX8 87A GTO301. 1 40A GTO601. 1 69A GTO1201. 1 115A Minimum Wire Gauge #10mm2 #10mm2 #10mm2 #10mm2 #16mm2 #25mm2 These recommendations assume 1, 5m à 2, 5m wire runs. If your installation differs markedly, you will need to adjust the wire gauge accordingly. Important Note: If you are planning to use optional neon tubes, install them before making any electrical connections to the amplifier (refer to"Installing Neon Tubes" on page 6). Figure 1. Terminal connection end plate. 2 APPLICATIONS ­ GTO301. 1, GTO601. 1 AND GTO1201. 1 The GTO subwoofer amplifiers are single-channel amplifiers. 5-Channel operation: The same as Figure 9, with the subwoofer output bridged to drive a single 4-ohm subwoofer, providing the speaker with more power. Figure 11. 3-Channel operation: GTX8 amplifier configured for 3-channel operation, where all of the channels are bridged for a subwoofer and a pair of component speakers. 5 INSTALLATION AND SETUP SETTING THE CROSSOVER(S) Determine your system plans and set the crossover mode switch accordingly. If you plan to use the GTO75. 2 or GTO75. 4 to drive full-range speakers, set the crossover mode to FLAT and skip to "Setting Input Sensitivity. " Initially set the crossover frequency control midway. While listening to music, adjust the crossover for the least perceived distortion from the speakers, allowing them to reproduce as much bass as possible. Systems using a separate subwoofer set the crossover mode to HP (high pass) for your full-range speakers. Adjust the crossover frequency to limit bass and provide increased system volume with less distortion. For subwoofers, choose the highest frequency that removes vocal information from the sound of the subwoofer. If using the GTO75. 2 or GTO75. 4 to drive a subwoofer(s), set the crossover mode to LP (low pass). NOTE: The GTO301. 1, GTO601. 1, GTO1201. 1 and the subwoofer output of the GTX8 are low-pass only and do not have a crossover mode switch. Initially turn the INPUT LEVEL control(s) to minimum (counter clockwise). Reconnect the (­) negative lead to the vehicle's battery. [. . . ] Using a 3/32-inch Allen wrench, remove only the screws on the amplifier's (top) clear cover and set them aside. Remove the end panel and slide the cover off. Locate the enclosed hardware bag and remove the four clips. Each clip has a square end and a larger round end. [. . . ]

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