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JBL GTS300 manual

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Table of contents for the manual

  • Page 1

    either subwoofer or component speakers in a bi-amplified system, or conventional full-range speakers in simpler systems. The GTS300 and 600 also include preamp-level outputs which can provide either full-range, high-pass or low-pass signal to drive additional amplifiers. This lets you build systems of virtually any design without requiring a separa[...]

  • Page 2

    2 before disconnecting the battery! 2. Run a minimum A WG #8 power cable complete with a 40 amp fuse (not included) for the GTS300 or an A WG #6 or A WG #4 cable with an 80 amp fuse for the GTS600 directly from the positive + 12V battery terminal to the disir ed amplifier location. Keep the fuse to within 6” of the battery terminal, and before th[...]

  • Page 3

    9. Fuse – 40 Amp A TC type fuse for the GTS300 and two 40 amp fuses for the GTS600. 10. Gain Control – Use this contr ol to adjust the input sensitivity of the amplifier . See the “Adjusting the Gain” section for tips on proper setup. 11. Preamp-Output Crossover Switch – This switch controls the built-in crossover that is directed to the [...]

  • Page 4

    3. System Design Using the GTS300 or GTS600: 3.1 Speaker Requirements When used in the non-bridged mode the GTS300 or GTS600 can easily drive 2 ohm speaker loads. When only one speaker is connected to each channel, virtually any conventional speaker may be used. When the GTS300 or GTS600 is in bridged mode, the combined impedance of the speaker (or[...]

  • Page 5

    components is extremely important for proper performance and long term reliability . All wiring connections should be made either by soldering with heatshrink tubing insulation or with high quality crimp type insulated connectors installed with a good crimping tool. Soldering crimp connections is recom- mended to further enhance connection reliabil[...]

  • Page 6

    5. Internal Adjustments Speaker -Level Input Impedance Adjustments The speaker level inputs of the GTS300 and GTS600 come factory set with 100K ohm input impe- dance. This will provide the lowest distortion operation from the speaker outputs of most modern head units by reducing the power the amplifier in the head unit must deliver to practically n[...]

  • Page 7

    Regardless of whether you build or buy it, the necessary resistor network has the following configuration: Custom “Chip” Construction • Each resistor in the package has the same value. • If you kvow the crossover frequency you want, you can calculate the resistor value necessary by solving the following equation: Resistor 2,500,000 V alue =[...]

  • Page 8

    6. Input Gain Adjustment Before operating the GTS300 or GTS600, recheck all wiring connections to make sure they are correct and secure. Be sure that a 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 battery . Make sure that[...]

  • Page 9

    7. T ypical 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[...]

  • Page 10

    10 L– R+ – + L– R+ – + L– R+ – + Preamp or Speaker-Level Input L R 2 or 4-Ohm Full-Range Speakers L– L+ – + R– R+ – + L R Front Rear 4-Ohm Subwoofer Stereo Subwoofers may be used by configuring Amp B as shown in Application #1 . Application 1 Stereo Full-Range or Subwoofer Operation Preamp or Speaker-Level Input L R 2 or 4-Ohm F[...]

  • Page 11

    Simultaneous Stereo-Mono Connection Diagrams 11 L– L+ L L L R R R – + L– R+ – + R– R+ – + 2 or 4-Ohm Full-Range Speakers 4-Ohm Subwoofer Amp Crossover Input Mode Preamp Switch Switch Output Crossover A High Pass Stereo Flat B Low Pass L + R Doesn't Matter Speaker Output GTS300/600 A GTS300/600 B Application 4 Bi-amplified System Us[...]

  • Page 12

    8. In Case of Difficulty Power -on light does not come on Power light is on, but no sound is heard from some or all of the speakers • Head unit not on; turn the head unit 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 [...]

  • Page 13

    Power On light is blinking, indicating a fault condition, and sound is intermittent or off Alternator whine through the audio system with the engine running Bass output from speakers too low • Defective GTS300 or GTS600; If ther e is audio signal present at the input of the amplifier and there is no output, the GTS300 or GTS600 may be defective. [...]

  • Page 14

    9. Specifications Specifications Power Output (10Hz -50kHz, 14.4V Battery V oltage Signal to Noise Ratio Fr equency Response Damping Factor Line Level Input Sensitivity (For Rated Power) Line Level Input Impedance Speaker Level Input Impedance Speaker Level Input Sensitivity Preamp Output Sensitivity Minimum Speaker Impedance Single Ended (Non-Brid[...]

  • Page 15

    15 Specifications Power Requirement Fuse Size Size (L x W x H) W eight Speaker Level Input Mating Connector GTS300 11 to 16V DC Negative Ground 40 Amp A TC T ype Fuse 13 1/4”x 9 1/4”x 2” (337 mm x 235 mm x 51 mm) 10 lbs 8.5 oz (4.8 Kg) Molex Mini-Fit Jr . # 39-01-2045-P Metal Pins: 39-00-0039 GTS600 11 to 16V DC Negative Ground 40 Amp A TC T [...]

  • Page 16

    16 DECLARA TION OF CONFORMITY W e, 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) Steen M[...]