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1. Introduction
either subwoofer or component
Thanks for purchasing your new speakers in a bi-amplified system,
GT series automotive amplifier. or conventional full-range speakers
The GT series amplifier you have in simpler systems.
chosen includes many unique The GTS300 and 600 also include
features to enhance its perfor- preamp-level outputs which can
mance and utility. The power amp- provide either full-range, high-pass
lifier circuitry is a fully discrete or low-pass signal to drive
design n
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before disconnecting the 7. Turn the input gain adjustment battery! to the 1/4 position. 2. Run a minimum AWG #8 8. Set the crossover switches as power cable complete with a desired. 40 amp fuse (not included) for 9. Set the input mode switch to the GTS300 or an AWG #6 or stereo, left + right or right AWG #4 cable with an 80 amp input only operation. fuse for the GTS600 directly 10. Set the bass boost switch to from the positive + 12V battery the desired position. terminal to the disired 11. Rec
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40A 9. Fuse – 40 Amp ATC type fuse for pass filter on the amplifier (for the GTS300 and two 40 amp fuses subwoofer use). Set the switch to for the GTS600. “High Pass” to activate the high 10. Gain Control – Use this control pass filter for use with satellite to adjust the input sensitivity of speakers. the amplifier. See the “Adjusting 13. Input Mode Selector – This the Gain” section for tips on switch is used to set the input proper setup. mode for both preamp and 11. Preamp-Output Crossover sp
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3.2 Signal Sources 3. System Design Using the GTS300 or GTS600: The low level preamp outputs of 3.1 Speaker Requirements any radio/tape deck, CD player or When used in the non-bridged preamp/equalizer so equipped can mode the GTS300 or GTS600 can drive the GTS300 or GTS600. The easily drive 2 ohm speaker loads. gain controls of the GTS300 or When only one speaker is GTS600 are used to match the connected to each channel, amplifier’s input sensitivity to the virtually any conventional speaker out
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A S U E H T components is extremely loosen with age and extreme important for proper performance temperatures. Never leave bare and long term reliability. wire exposed. All wiring connections should be Route the wiring through the car made either by soldering with carefully. Do not allow wires to lay heatshrink tubing insulation or against sharp sheet metal edges or with high quality crimp type any other surfaces that might wear insulated connectors installed with away or cut through the insulat
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FUSE 40A REM OUT + + R R L L – – + L BA – R R GND BRIDGED LINE PREAMP INPUT OUTPUT SPEAKER LEVEL INPUT 40 Crossover Frequency 5. Internal Adjustments Adjustments Speaker-Level Input Impedance Adjustments The GTS300 and GTS600 ampli- The speaker level inputs of the fiers include built-in frequency GTS300 and GTS600 come factory selectable crossovers. One set with 100K ohm input impe- crossover is connected in series dance. This will provide the lowest with the amplifier circuitry and the distorti
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Regardless of whether you build • To build “chips” from discrete or buy it, the necessary resistor resistors, solder the resistores to network has the following a standard 14-pin “DIP Head” configuration: according to the diagram. If a DIP Header is not available, you Custom “Chip” Construction may bend the leads of 1/4 watt resistors 90 degrees, trim them to 3mm-length, and insert them directly into the chip sockets. To change the crossover frequency change the resistor network as follows: 1. R
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A S E E U H H T T E H N N T I I N I E E E D D D A A A M M M 6. Input Gain Adjustment until the system plays as loud as Before operating the GTS300 or necessary ot when the first signs of GTS600, recheck all wiring distortion are heard. connections to make sure they are correct and secure. Be sure that a BEST-Vertical Mounting fuse (40 amp for GTS300 and two 40 amp fuses for the GTS600, not included) is installed in the +12V line near the battery. Reconnect the negative ground (-) terminal of the
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7. Typical Applications The following diagrams show the most common basic system configurations of the GTS300 and GTS600. A combination of one or more of these “building blocks” may be combined to form elabo- rate system designs. 9
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A A A A A S S S S S U U U U U E E E E E H H H H H T T T T T N N N N N I I I I I E E E E E D D D D D A A A A A M M M M M Application 1 Application 1 Stereo Full-Range or Subwoofer Operation Stereo Full-Range or Subwoofer Operation Preamp or L Speaker-Level R Input Full-Range Operation Speaker Output Crossover Input Mode Switch Switch Flat Stereo Subwoofer Operation GTS300/600 Speaker Output Crossover Input Mode L– L+ R–
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A A S S U U E E 40A H H T T N N I I E E D D A A M M Application 4 Application 4 Bi-amplified System Using Bi-amplified, System Using Preamp or Preamp Output Capability. Speaker-Level Preamp Output Capability Input Preamp Preamp Output Intput Speaker Output L R R L L R Amp Crossover Input Mode Preamp Switch Switch Output Crossover A High Pass Stereo Flat B Low Pass L + R Doesn't Matter GTS300/600 GTS300/600 Stereo Subwoofers may be used by configuring A B Amp B as shown
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8. In Case of Difficulty Power-on light does not • Head unit not on; turn the head unit on. come on • Ground wire is disconnected or defective; check for continuity with an ohm-meter between the amplifier’s ground terminal and a know chassis ground point. • Battery wire is disconnected or defective; check approximately +12 volts between the amplifier’s battery and ground terminals. • Blow fuse; check amplifier’s located on the endpanel near the power connector. If it is blown replace it with an
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• Defective GTS300 or GTS600; If there is audio signal present at the input of the amplifier and there is no output, the GTS300 or GTS600 may be defective. Power On light is blinking, • Incorrectly connected or shorted indicating a fault condition, speaker wires; check for shorts, frayed and sound is intermittent or wiring, damaged wiring insulation or off incorrect wiring. • The speaker combination connected to the amplifier is less than the minimum requirement; reconfigure speaker connection a
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9. Specifications Specifications GTS300 GTS600 Power Output 100 Watts x 2 200 Watts x 2 (10Hz -50kHz, (4 Ohms, 0.05% THD) (4 Ohms, 0.05% THD) 14.4V Battery Voltage 150 Watts x 2 300 Watts x 2 (2 Ohms, 0.08% THD) (2 Ohms, 0.08% THD) 300 Watts x 1 600 Watts x 1 (4 Ohms, 0.08% Thd) (4 Ohms, 0.08% Thd) Signal to Noise Ratio 100dBA 100dBA Frequency Response 10Hz - 50kHZ (+0, -1dB) 10Hz - 50kHZ (+0, -1dB) 20Hz - 20kHZ (+0, -0.1dB) 20Hz - 20kHZ (+0, -0.1dB) Damping Factor >200 >200 Line Level Input Sen
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Specifications GTS300 GTS600 Power Requirement 11 to 16V DC 11 to 16V DC Negative Ground Negative Ground Fuse Size 40 Amp ATC Type Fuse 40 Amp ATC Type Fuse (2 per Amplifier) Size (L x W x H) 13 1/4”x 9 1/4”x 2” 17 1/4”x 11 1/4”x 2” (337 mm x 235 mm x (438 mm x 286 mm x 51 mm) 50.8 mm) Weight 10 lbs 8.5 oz (4.8 Kg) 13 lbs 11.5 oz (6.2 Kg) Speaker Level Input Molex Mini-Fit Jr. Molex Mini-Fit Jr. Mating Connector # 39-01-2045-P # 39-01-2045-P Metal Pins: 39-00-0039 Metal Pins: 39-00-0039 15
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DECLARATION OF CONFORMITY We, Harman Marketing Europe a/s Kongevejen 194B DK-3460 Birkerød DENMARK declare that the product described in this owner’s manual is in compliance with technical standards: EN 55020, EN 6.1988, Accredited test laboratory: MIKES PRODUCT SERVICE GmbH Ohmstrasse 2-4 D-94342 Strasskirchen GERMANY, (date tbd) JBL Consumer Products, Inc. 80 Crossways Park West Steen Michaelsen Woodbury, NY 11799 Harman Marketing Europe a/s 8500 Balboa Blvd. Northridge, CA 91329 800-336-4 JBL
