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Bedienungsanleitung JBL GTH400-20107

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  • JBL GTH400-20107 - page 1

    GTH400-20107 06/03/98 15:49 Side 26 ...

  • JBL GTH400-20107 - page 2

    GTH400 GTH400 6/5/4/3 CHANNEL AUTOMOTIVE POWER AMPLIFIER OWNER’S MANUAL GTH400-20107 06/03/98 15:49 Side 1 ...

  • JBL GTH400-20107 - page 3

    T able of Contents 1. Introduction ...................................................................................... 3 1.1 Features .................................................................................... 4 1.2 About Installation ...................................................................... 4 2. Installation and use ...... ...

  • JBL GTH400-20107 - page 4

    3 1. Introduction Thanks for purchasing your new GT series automotive multichannel ampli- fier. Your GT series amplifier will easily connect to virtually any car audio system, whether it is factory installed or one purchased separately. The GTH400 includes an abundance of unique features which are described in this manual. The most obvious feature ...

  • JBL GTH400-20107 - page 5

    4 1.1 Features Theory of Operation – Virtual Center Image Enhancer JBL’s breakthrough “Virtual Center” circuitry is the result of the understanding of how the human ear responds to timing, frequency, and amplitude cues to determine the apparent direction of a sound source. Virtual Center circuitry manipulates the analog signal in real time ...

  • JBL GTH400-20107 - page 6

    5 2. Installation and use Refer to the “Crossover Frequency Adjustments” and “Speaker-Level Input Impedance Adjustments” sections of this manual to see if you will need to make alterations to their factory settings. 1. Disconnect the negative cable from the battery. Note: If the vehicle’s radio features a code type security system, make c ...

  • JBL GTH400-20107 - page 7

    3. System Design Using the GTH400 3.1 Speaker Requirements When used in the non-bridged mode a group-channel of the GTH400 can easily drive two 2-ohm speaker loads. When only one speaker is connected to the left and right outputs of a group, virtually any conventional speaker may be used. When two speakers are connected in parallel to a single outp ...

  • JBL GTH400-20107 - page 8

    7 3.2 Typical Applications The diagrams on pages 8 & 9 show the most common basic system configurations of the GTH400. One or more of these building blocks may be combined to form elaborate system designs. The GTH400 uses the terminology “Group 1,” “Group 2” and “Group 3” to indicate the three main signal paths within the amplifier. ...

  • JBL GTH400-20107 - page 9

    8 L L R L R + L – Application 4 3-Channel Bi-Amplified 4-Channel Input (Fading Subwoofer) L L R R GR 1 GR 3 GR 2 Group 1 Group 2 Group 3 Input Mode L L L+R Group 2 Input – GR 2 – Group 3 Input – – GR 3 Speaker Crossover High Pass High Pass Low Pass Preamp Output Crossover – – – 2-Channel Input (Mono Subwoofer) Group 1 Group 2 Group ...

  • JBL GTH400-20107 - page 10

    9 4. Installation and Use 4.1 Controls and Connectors 1. Preamp-Level Input Connector – Use these connectors for line (pre- amp) level inputs to the amplifier. 2. Preamp-Level Output Connector – Use these outputs to send signal to additional amplifiers. 3. Speaker-Level Input Connector – Use this connector for speaker level input signals. A w ...

  • JBL GTH400-20107 - page 11

    10 to use in conjunction with a high- pass filtered input signal to create a bandpass crossover (for a midrange or midbass driver). Set the switch to H (high) to activate the high-pass filter for use with satellite speakers or tweeters on an amplifier group. 13. Mode Switches – These switches are used to set the input mode for both preamp and spe ...

  • JBL GTH400-20107 - page 12

    11 + - + - + - Buffer Buffer Buffer Buffer Buffer Buffer 1 2 3 1 2 3 1 2 3 1 2 1 2 1 2 3 1 2 3 1 2 3 1 2 3 CH. 1 L IN CH. 1 R IN CH. 2 L IN CH. 2 R IN CH. 1 L OUT CH. 1 R OUT CH. 2 L OUT CH. 2 R OUT IMAGE ENH. 1 2 3 GROUP 3 INPUT + + 1 – GR 3 2 – GR 2 3 – GR 1+2 1 Speaker Crossover 1 – Flat 2 – Low Pass 3 – High Pass Preamp Crossover 1 ...

  • JBL GTH400-20107 - page 13

    12 4.2 Internal Adjustments Speaker-Level Input Impedance Adjustments The speaker level inputs of the GTH400 come factory set with 100k ohm input impedance. 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 nothing. On ...

  • JBL GTH400-20107 - page 14

    13 Custom Chip Construction Regardless of whether you build or buy it, the necessary resistor network has the following configuration: • Each resistor in the package has the same value. • If you know the crossover frequency you want, you can calculate the resistor value necessary by solving the following equation: Resistor 2,500,000 Value = Fre ...

  • JBL GTH400-20107 - page 15

    14 Under-Dash Remote Installation 1. Set the GTH400 remote in the installation location and mark two mounting screw hole locations. 2. Set the GTH400 remote aside and drill two pilot holes using a 1⁄16"- (1mm) bit. Be careful not to drill into any of the car’s components. 3. Secure the spacer and faceplate (with the control labeling) to th ...

  • JBL GTH400-20107 - page 16

    15 FACE PLATE DASH PANEL SPACER PLATE (INCLUDED) FACE PLATE Cassette/CD Tuner CD Player or Changer CD Input Cassette/CD Preamp Output Antenna Input Power Antenna 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/O ...

  • JBL GTH400-20107 - page 17

    16 is heat- and oil-resistant whenever running wires through the engine compartment. All wire-to-wire connections should be soldered and insulated with heat shrink tubing, or connected through a high-quality insulated crimp-on connector or secure set-screw-type terminal blocks. Never leave bare wire exposed. Terminate wires with crimp- or solder-on ...

  • JBL GTH400-20107 - page 18

    17 • The GTH400 will draw as much as 60 amps from the vehicle’s electrical system, enough to overload conventional vehicle wiring. Therefore the +12 volt power supply must be taken directly from the positive side of the battery. Do not connect to the vehicle’s fuse block or to a wire feeding other accessories. • To prevent electrical system ...

  • JBL GTH400-20107 - page 19

    18 background noise levels in the system low. • To adjust a system using a single GTH400, start with all three of the amplifier gain controls fully counterclockwise and the Imaging Enhancer Remote set to “Bypass” mode. Some head units have additional output level controls or switches. Set those to their maximum position. • Set the level con ...

  • JBL GTH400-20107 - page 20

    19 position for driver-optimized sound stage. 5. Proceed to push and pull the Rear- Ambience knob to hear the effects of “Driver” and “All” modes. You should hear imaging coming from the middle of the dashboard when the knob is pushed in (“Driver” mode). You should hear stereo with ambience recovery when the knob is pulled out (“All? ...

  • JBL GTH400-20107 - page 21

    20 and off, or does not work at all, a problem in installation or an abnormal electrical condition is indicated. Check speaker wiring for short circuits or impedance loads significantly below 2 ohms (4 ohms in bridged mode). Check the power supply voltage at the input of the amplifier to be sure that it is normal; between 11 and 16 volts. Check tha ...

  • JBL GTH400-20107 - page 22

    21 7. 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 betw ...

  • JBL GTH400-20107 - page 23

    22 Power light is on, but no sound is heard • Defective head unit or signal processor; from some or all of the speakers check each component for proper wiring and operation. • Defective GTH400; If there is audio signal present at the inputs of the amplifier and there is no output, the GTH400 may be defective. Alternator whine through the audio ...

  • JBL GTH400-20107 - page 24

    23 8. Specifications GTH400 35 Watts x 4 + 70 Watts x 2 (4 ohms, 0.05% THD) 50 Watts x 4 + 100 Watts x 2 (2 ohms, 0.08% THD) 100 Watts x 2 (Bridged 4 ohms, 0.08% THD) + 70 Watts x 2 (4 ohms, 0.05% THD) 100 Watts x 2 (Bridged 4 ohms, 0.08% THD) + 200 Watts x 1 (Bridged 4 ohms, at 0.08% THD) Signal to Noise Ratio 100dBA Frequency Response 10Hz – 50 ...

  • JBL GTH400-20107 - page 25

    24 9/64" (3.5mm) in 4 places 9/64" (3.5mm) in 2 places 25/64" (10mm) drill in 2 places UP UP Remote Control Drilling Template Power Requirement 11 to 16V DC Negative Ground Fuse Size 30 Amp ATC Type Fuse (2 per Amplifier) Size (L x W x H) 15-1/4" x 11-1/4" x 2" (387mm x 286mm x 51mm) Weight 13 lbs 4 oz (6 kg) Speaker L ...

  • JBL GTH400-20107 - page 26

    25 Staple or clip your original bill of sale here. ▼ GTH400-20107 06/03/98 15:50 Side 25 ...

Produzent JBL Kategorie Car Amplifier

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Die Bedienungsanleitung, auch bezeichnet als Benutzerhandbuch, oder einfach nur „Anleitung”, ist ein technisches Dokument, das dem Benutzer bei der Nutzung von JBL GTH400-20107 hilfreich sein soll. Die Bedienungsanleitungen werden in der Regel von technischen Schriftstellern geschrieben, aber in einer Sprache, die für alle Nutzer von JBL GTH400-20107 verständlich ist.

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1. Einführung und Hinweise, wie man sich in einer Bedienungsanleitung von JBL GTH400-20107 bewegt - Am Anfang jeder Bedienungsanleitung sollten wir Hinweise bezüglich der Nutzungsart eines bestimmten Ratgebers finden. In ihr sollten sich Informationen über die Lokalisierung des Inhaltsverzeichnisses von JBL GTH400-20107 befinden, FAQ oder über oft auftretende Probleme – also Stellen, die von den Benutzern in jeder Bedienungsanleitung am meisten gesucht werden
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