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JBL GT4.0c - page 1
GRAND TOURING SERIES GENUINE JBL A utomotive Component Systems G T4 . 0c, G T5 . 0c, G T6 . 0c Owner’s Manual GT4.0c, 5.0c, 6.0c OM 7/16/98 9:54 AM Page 1 ...
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JBL GT4.0c - page 2
Thank you for purchasing a JBL Grand Touring 2-way Component System. We’ve organized this manual to make your installation as simple and trouble-free as possible. Please read through it completely before proceeding. If, after having read it, you decide that you would rather leave installa- tion to a professional, consult your JBL Grand Touring De ...
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JBL GT4.0c - page 3
03 Component System Parts Your new Component System consists of the GTC04 neodymium magnet tweeter and either a 4", 5-1/4", or 6-1/2" midwoofer. Both the GTC04 and the midwoofer have high-quality passive crossover parts already built into them. Figure 2 is an illustration of the proper wiring procedure of the Component System. Import ...
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JBL GT4.0c - page 4
04 IN-LINE CROSSOVER (DO NOT CUT OR BYPASS) GTC04 WIRING HARNESS CONNECT TO AMPLIFIER 2 1 Line up tab with slot on bracket Push tweeter into bracket and turn clockwise 2 1 FLUSH MOUNT Midwoofer Terminal Block Connect to Amplifier or head unit Lead from GTC04 tweeter Small 0.11" (-) Terminals Large 0.25" (+) Terminals Attach to two outermo ...
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JBL GT4.0c - page 5
05 T weeter Output Level The GTC04 is a very efficient tweeter. If there is a need to lower the tweeter output level, a pair of 4 ohm / 5 watt resistors can be connected in series with the GTC04 as shown in Figure 3. To avoid short circuits, make sure that heat-shrink tubing or electrical tape is used to cover all exposed wiring. The in-line cross ...
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JBL GT4.0c - page 6
06 Installation of the GT4.0c woofer as shown in Figures 4a and 4b. Removable Mounting Ears on GT4.0c Bend up and down repeatedly to break off or use tin snips. • Some Toyota installations may require mounting ears to be removed from opposite sides. • Some European car installations may require all four ears to be removed. Figure 4a Mounting Ea ...
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JBL GT4.0c - page 7
07 Mounting Hooks Mounting Ring Foam Gasket Mounting Slots Rotate to Lock Rotate to Lock Rotate to Lock Slots for Mounting Hooks Mounting Hooks Mounting Ring Foam Gasket Mounting for US 6-1/2" Honda/Toyota Factory Location Match Notch on Speaker with Notch on Trim Ring Grille Screen Hole Cutout Grille Trim Ring Figure 5b Figure 5c Front View C ...
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JBL GT4.0c - page 8
08 Hole Cutout Clips Mounting Surface Figure 5d Figure 5e Mounting the GT6.0c woofer in 165/170mm DIN (European) installations using the Intermount II clips shown in Figures 5d and 5e. Front Mounting Rear Mounting GT4.0c, 5.0c, 6.0c OM 7/16/98 9:54 AM Page 8 ...
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JBL GT4.0c - page 9
09 2. The best center image will be achieved when the distance from the left speaker and the right speakers are as equal as possi- ble from your listening position. This is most easily achieved by placing the speakers as far for- ward as possible. 3. Treble is directional in nature. This means that high frequencies are reduced as you move off the t ...
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JBL GT4.0c - page 10
10 System Design There are a variety of system options available with the Component System. The simplest configuration is to use them full range with their built-in passive crossovers by connecting them to the output of a head unit or an amplifier (Figures 7 and 8). If you want to build your system using active (electronic) crossovers, with separ ...
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JBL GT4.0c - page 11
11 Installation Warnings and T ips • Be careful not to cut or drill into fuel tanks, fuel lines, brake or hydraulic lines, vacuum lines or electrical wiring when work- ing on your vehicle. Inspect behind panels before you cut or drill. • Make sure that the midwoofer will physically fit in the mount- ing location. If door mounting, check for ad ...
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JBL GT4.0c - page 12
12 A Note on Power Handling As a result of their high effi- ciency, all JBL loudspeakers will produce reasonable volume levels in the automotive environment using very little amplifier power. However, the use of a small amplifier to attain very high vol- ume levels could lead to over- driving the amplifier. This will generate high distortion le ...
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JBL GT4.0c - page 13
13 Specifications Component Systems Model GT6.0c GT5.0c GT4.0c Grand Touring Automotive Grand Touring Automotive Grand Touring Automotive 6-1/2" 2-way Component 5-1/4" 2-way Component 4" 2-way Component System System System 1" Titanium Composite 1" Titanium Composite 1" Titanium Composite Balanced-Drive Neodymium Bala ...
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JBL GT4.0c - page 14
14 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. The J B L warranty remains in effect for one year from the date of the first consumer purchase unless installed by an authorized J B L dealer. Installation by an authorized J B L dealer will extend the warranty t ...
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JBL GT4.0c - page 15
15 GT4.0c, 5.0c, 6.0c OM 7/16/98 9:54 AM Page 15 ...
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JBL GT4.0c - page 16
Declaration of Conformity We, JBL Europe A/S Kongevejen 194B DK-3460 Birkerød DENMARK declare in own responsibility , that the products described in this owner’s manual are in compliance with technical standards: EN 50 081-1/1992 EN 50 082-1/3.1995 Steen Michaelsen JBL Europe A/S Birkerød. DENMARK. 5/96 JBL Consumer Products, Inc. 80 Crossways ...
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