GRAND TOURING SERIES
Automotive
Component Systems
GT 4.0c, GT 5.0c, GT 6.0c Owner’s Manual
G E N U I N E J B L
Thank you for purchasing a
02 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 installation to a professional, consult your JBL Grand Touring Dealer.
Autosound at Its Best
Your JBL Component System is built to meet the same rigorous standards of construction and performance that have long established JBL’s renowned home and professional speaker systems.
Your Component System has been designed using a combination of technologies that bring high value to high performance. The tweeter dome used in
your Component System tweeter is manufactured from a proprietary material known as Titanium Composite. This material combines the control and damping of an advanced polymer with the reinforcing stiffness of vapor-deposited titanium to prevent breakup at high levels.
Similarly, the woofer cones are manufactured with a proprietary copolymer which is reinforced with graphite in order to deliver the clarity and effortless power that have made JBL famous. The pattern molded into this material further stiffens it, reducing breakup at high listening levels. This cone is suspended by a heavy Butyl rubber surround, which serves to absorb any remaining cone resonances for the clearest, most articulate reproduction of voices and other mid-range sounds. As a bonus, the Butyl rubber surround is impervious to temperature extremes and humidity,
making it ideal for automotive applications.
By following the installation recommendations and suggestions included in this manual, you will be assured of many years of trouble-free enjoyment from your Grand Touring series loudspeakers.
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.
Important Paperwork
Before proceeding, be sure to put the sales receipt from your JBL Component System purchase in a safe place. It is necessary to validate your Limited Warranty. Having access to the receipt is also valuable for insurance purposes and when it comes time to resell your vehicle.
Tweeter Installation
The GTC04 has been supplied with both Angle and Flush mounting brackets. Figures 1 and 2 show the proper way to flushand angle-mount the GTC04. The mounting hole diameter for the flush-mount frame is 1-3/4".
Figure 1 |
03 |
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ANGLE MOUNT
2
1
1Line up tab with slot on bracket
2Push tweeter into bracket and turn clockwise
04 |
IN-LINE CROSSOVER |
Typical installation of the GT4.0c and GT5.0c |
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(DO NOT CUT OR BYPASS) |
woofers with grilles as shown in Figure 2a. |
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GTC04 WIRING HARNESS
2
1
FLUSH MOUNT
1 Line up tab with slot on bracket
2 Push tweeter into bracket and turn clockwise
CONNECT |
Trim Ring |
TO |
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AMPLIFIER |
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Lead from GTC04 tweeter |
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Small 0.11" |
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(-) Terminals |
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Connect |
Car Door |
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to |
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Amplifier |
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or |
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Large 0.25" |
head unit |
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(+) Terminals |
Attach to |
Grille Screen |
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two outermost tabs |
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Figure 2 |
Midwoofer Terminal Block |
Figure 2a. Grille mounting |
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Tweeter 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 crossover acts as a
high-pass filter as well as a protection device that keeps the tweeter from being over-exerted by low frequencies that it was not designed to reproduce. Under normal circumstances this crossover should not be bypassed or removed for any reason. Bypass the installed capacitor only when using an outboard active crossover or a custombuilt passive crossover set above 5kHz.
IN-LINE CROSSOVER |
05 |
(mylar capacitor) |
cut wire here after capacitor
4 ohms /
5 watt (min) resistor
(sold separately)
Figure 3