GTQ 360 new 7/17/98 10:44 AM Page 1 GRAND TOURING SERIES 4/3/2 Channel Automotive Power Amplifier GT Q 3 6 0 , GT Q 2 4 0 O w n e r ’ s M a n u a l GENUINE JBL
GTQ 360 new 7/17/98 10:44 AM Page 2 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Thanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 About Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Installation and Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GTQ 360 new 7/17/98 10:44 AM Page 3 1. Introduction 1.1 Thanks for purchasing your new GT series automotive multi-channel amplifier. Your GT series amplifier will easily connect to virtually any car audio system, whether it is factory installed or purchased separately. The GTQ360 and GTQ240 include an abundance of unique features which are described in this manual. The flexible design of their built-in crossover circuitry allows elaborate systems to be built more simply than with conventional components.
GTQ 360 new 7/17/98 10:44 AM LINE LEVEL INPUT GR2 GR1 GR1 PREAMP OUTPUTS GR2 Page 4 SPEAKER LEVEL INPUTS R GR2 L + – – + L + SPEAKER OUTPUTS (BRIDGED: R+TOL–) GR1 R L GR2 R + + + FUSE 30A FUSE 30A REM IN/OUT POWER MUTE BASS EQ OFF ON CROSSOVER SPEAKER PREAMP H F R ST L+R – 1 2 3 2.2 Controls and Connectors 1. Preamp-Level Input Connector – Use these connectors for line-level (preamp) inputs to the amplifier. 2.
GTQ 360 new 7/17/98 10:44 AM Page 5 4.3 Remote-In/Out Connection 4. Wiring 4.1 Wiring 3.2 Signal Sources Parallel Wiring (+) 2 ohms Nominal Impedance 4 ohms 4 ohms (–) Series Wiring (+) 4 ohms 8 ohms Nominal Impedance (–) 4 ohms The low-level preamp outputs of any radio/tape deck, CD player, or preamp/ equalizer so equipped can drive the GTQ360 or GTQ240. The gain controls of the amplifier are used to match its input sensitivity to the output voltage of the source.
GTQ 360 new 7/17/98 10:44 AM Page 6 Tweeter/Midrange Satellites (High-Pass) Left C: 300µF capacitor 100V, non-polarized Subwoofer Low-Pass Crossover Frequency: 100Hz Antenna Input Power Antenna (+) (–) High-Pass Satellite Crossover Frequency: 100Hz CD Player or Changer Cassette/CD Tuner Subwoofer (Low-Pass) A. Satellite/Subwoofer Cassette/CD Tuner Speaker-Level Output Connection (Use only when line-level output is not available) L: CD Input (+) (–) Right (+) L C (–) C 6.
GTQ 360 new 7/17/98 10:44 AM Page 7 5. Internal Adjustments 5.1 Speaker-Level Input Impedance Adjustments 4.4 Mute Connection The GTQ amplifier includes a mute input terminal. This amplifier will mute when a 5V to 12V DC signal is applied to the “mute” input and will be in normal operation mode with either a ground or nothing connected to the “mute” input. This “mute” input is compatible with any aftermarket noise gate that puts out a control voltage of +5V to +12V DC. 4.
GTQ 360 new 7/17/98 10:44 AM Page 8 BEST-Vertical Mounting HIG H FR FILTEPASS SE EQUE R C1 LE 3 MO CT NCY DU ION LE C1 0 DU ION Y LE LO W FR FILTEPASS SE EQUE R LE MO CT NC CR OS SO VE R NO JB RTH L JB R INC. PC L GTSIDGE, 00 60 C REV1088 0 A A 00 2. Select which resistor module, high pass or low pass, that you wish to change. 3. A chip puller, which can be obtained from any electronics store, is recommended to remove the resistor chip.
GTQ 360 new 7/17/98 10:44 AM Page 9 L R L R Preamp or Front Speaker-Level Rear Input L R L R Application 1 4-Channel Full-Range GR 1 Input Mode Group 2 Input Speaker Crossover Preamp Output Crossover Group 1 ST – Flat – Group 2 ST GR 2 Flat – 4-Channel Bi-Amplified System with Non-Fading Subwoofers GR 2 Mode Group 2 Input Speaker Crossover Preamp Crossover GTQ AMP GR 2 GR 1 L– L+ R– – + – L L– R+ L+ R– Group 1 Stereo – High Pass – GR 1 Group 2 Stereo GR 1+2 Low Pass – + – + – L R G
GTQ 360 new 7/17/98 10:44 AM Page 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 defective; check for continuity with an ohmmeter between the amplifier’s ground terminal and a known chassis ground point. • Battery wire is disconnected or defective; check for approximately +12 volts between the amplifier’s battery and ground terminals.
GTQ 360 new 7/17/98 10:44 AM Page 11 Specifications Power Output (20Hz – 20kHz, 14.4V Battery Voltage) GTQ360 GTQ240 60 Watts x 4 (4 Ohms, 0.05% THD) 90 Watts x 4 (2 Ohms, 0.08% THD) 180 Watts x 2 (Bridged 4 Ohms, 0.08% THD) 45 Watts x 4 (4 Ohms, 0.05% THD) 60 Watts x 4 (2 Ohms, 0.08% THD) 120 Watts x 2 (Bridged 4 Ohms, 0.08% THD) Signal-to-Noise Ratio 100dBA 100dBA Frequency Response 10Hz – 50kHz (+0, –1dB) 20Hz – 20kHz (+0, – 0.1dB) 10Hz – 50kHz (+0, –1dB) 20Hz – 20kHz (+0, – 0.
GTQ 360 new 7/17/98 10:44 AM Page 12 Declaration of Conformity Warranty Terms: 1 Year Transferable Limited Warranty / 2 Year Extended Transferable Limited Warranty (USA Only) We, JBL Europe A/S Kongevejen 194B DK-3460 Birkerød DENMARK This is an important document. Attach your bill of sale to this page and keep it in a safe place. Your bill of sale is your warranty. Except as specified below, the JBL warranty covers all defects in material and workmanship.