Page 2 - Owner’s Warranty Information; Model Number
2 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Thanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 About Installation . . . . . . . ...
Page 3 - About Installation; all; Installation and Use
3 1. Introduction 1.1 Thanks for purchasing your new GT series automotive multi-channelamplifier. Your GT series amplifier willeasily connect to virtually any car audiosystem, whether it is factory installed orpurchased separately. The GTQ360 andGTQ240 include an abundance of uniquefeatures which ar...
Page 5 - When
5 (+) (–) (+) (–) Parallel Wiring Series Wiring 2 ohmsNominalImpedance 8 ohmsNominalImpedance 4 ohms 4 ohms 4 ohms 4 ohms 4.3 Remote-In/Out Connection • The remote power control system turnsthe GTQ amplifier off when not in use toprevent discharging of the vehicle’s bat-tery. Because the JBL GTQ amp...
Page 6 - Using the REM-OUT feature –; Simultaneous Stereo-Mono Connection Diagrams
6 Cassette/CD Tuner CD Player or Changer CD Input Cassette/CD Preamp Output Antenna Input PowerAntenna Power Antenna Relay Blue w/White Stripe - Remote On/Off Main +12V Power Ground Chassis Ground Vehicle Battery – + Ignition Switch Antenna Motor Power Supply Blue (Blue/White) Remote On/Off Remote A...
Page 7 - Internal Adjustments; Custom Chip Construction; White; Frequency in Hz
7 5. Internal Adjustments 5.1 Speaker-Level InputImpedance Adjustments The speaker level inputs of the GTQamplifiers come factory-set with100k ohm input impedance. This will pro-vide the lowest distortion operation fromthe speaker outputs of most modern headunits by reducing the power the amplifieri...
Page 8 - Adjusting the Gain; 2V line near the battery. Reconnect the; System 1; Active 3-way using outboard tweeter amplifier; Typical Applications
8 To change the crossover frequencychange the resistor network as follows:1. Remove the screws from the bottompanel as shown below. 2. Select which resistor module, highpass or low pass, that you wish tochange.3. A chip puller, which can be obtainedfrom any electronics store, is recom-mended to remo...
Page 10 - In Case of Difficulty; Power-on light does not come on; 2 volts between; Bass output from speakers too low; amp terminal to
10 8. In Case of Difficulty Power-on light does not come on • Head unit not on; turn the head unit on.• Ground wire is disconnected or defec-tive; check for continuity with an ohm-meter between the amplifier’s ground ter-minal and a known chassis ground point.• Battery wire is disconnected or defec-...
Page 11 - Specifications
11 Specifications GTQ360 GTQ240 Power Output 60 Watts x 4 (4 Ohms, 0.05% THD) 45 Watts x 4 (4 Ohms, 0.05% THD) (20Hz – 20kHz, 90 Watts x 4 (2 Ohms, 0.08% THD) 60 Watts x 4 (2 Ohms, 0.08% THD) 14.4V Battery Voltage) 180 Watts x 2 (Bridged 4 Ohms, 0.08% THD) 120 Watts x 2 (Bridged 4 Ohms, 0.08% THD) S...
Page 12 - A Harman International Company; Declaration of Conformity; A copy of the; To Obtain Warranty Service
JBL Consumer Products80 Crossways Park WestWoodbury, NY 11797 8500 Balboa Blvd.Northridge, CA 91329 800-336-4JBL (4525) Part No. GTQ360/240OM Made in USA A Harman International Company C E L E B R A T I N G 5 0 Y E A R S Declaration of Conformity We, JBL Europe A/S Kongevejen 194B DK-3460 BirkerødDE...