JBL GT6 0c User Manual

GRAND TOURING SERIES  
Automotive  
Component Systems  
GT4.0c, GT5.0c, GT6.0c Owner’s Manual  
GENUINE JBL  
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.  
Tweeter Installation  
Figure 1  
03  
The GTC04 has been supplied  
with both Angle and Flush  
mounting brackets. Figures 1 and  
2 show the proper way to flush-  
and angle-mount the GTC04. The  
mounting hole diameter for the  
flush-mount frame is 1-3/4".  
ANGLE MOUNT  
2
1
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 vali-  
date your Limited Warranty.  
Having access to the receipt is  
also valuable for insurance pur-  
poses and when it comes time to  
resell your vehicle.  
1
Line up tab with slot on bracket  
Push tweeter into bracket and turn clockwise  
2
IN-LINE CROSSOVER  
(DO NOT CUT OR BYPASS)  
Typical installation of the GT4.0c and GT5.0c  
woofers with grilles as shown in Figure 2a.  
04  
GTC04 WIRING HARNESS  
2
1
CONNECT  
Trim Ring  
TO  
AMPLIFIER  
FLUSH MOUNT  
Line up tab with slot on bracket  
1
2 Push tweeter into bracket and  
turn clockwise  
Lead from GTC04 tweeter  
Small 0.11"  
(-) Terminals  
Connect  
to  
Car Door  
Amplifier  
or  
head unit  
Large 0.25"  
(+) Terminals  
Attach to  
two outermost tabs  
Grille Screen  
Figure 2a. Grille mounting  
Midwoofer Terminal Block  
Figure 2  
high-pass filter as well as a pro-  
tection 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 custom-  
built passive crossover set above  
5kHz.  
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.  
IN-LINE CROSSOVER  
(mylar capacitor)  
05  
cut wire here  
after capacitor  
The in-line crossover acts as a  
4 ohms /  
5 watt (min)  
resistor  
(sold separately)  
Figure 3  
Installation of the GT4.0c woofer as shown in Figures 4a and 4b.  
06  
Mounting Ears Removed  
Figure 4a  
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 4b  
Two-Screw Mounting Configuration  
Installation of the GT6.0c woofer  
with the Intermount II (pat. pend.)  
mounting system is shown in  
Figures 5a, b, c.  
Figure 5a  
Figure 5c  
07  
Mounting  
Ring  
Hole Cutout  
Match Notch on  
Speaker with  
Notch on Trim Ring  
Mounting  
Hooks  
Rotate  
to  
Lock  
Figure 5b  
Rotate  
to Lock  
Foam  
Slots for  
Gasket  
Mounting  
Hooks  
Foam  
Gasket  
Mounting  
Ring  
Rotate  
to Lock  
Mounting  
Slots  
Grille  
Screen  
Grille  
Trim Ring  
Mounting  
Hooks  
Front View  
Mounting for US 6-1/2"  
Honda/Toyota  
Factory Location  
Custom Door Mounting with Grille  
Screw Patterns Fit DIN (European)  
165/170mm Mounting Holes  
Rear View  
Figure 5e  
Figure 5d  
08  
Hole Cutout  
Mounting the GT6.0c woofer in  
165/170mm DIN (European)  
installations using the Intermount II  
clips shown in Figures 5d and 5e.  
Clips  
Mounting  
Surface  
Rear Mounting  
Front Mounting  
The best system integration is  
achieved when the tweeter is  
mounted close to the midwoofer  
speaker. This helps smooth the  
transition from the midrange and  
tweeter crossover point.  
Component Placement  
Because of the JBL Component  
System’s small size and ex-  
tremely versatile mounting  
options, there are an almost infi-  
nite number of placement options  
to achieve excellent sound quality  
in any vehicle. Please consider  
the following statements to help  
you get the most from your  
system.  
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.  
09  
Choosing mounting locations  
which satisfy all of the above cri-  
teria will provide the most satis-  
fying performance.  
3. Treble is directional in nature.  
This means that high frequencies  
are reduced as you move off the  
tweeter's axis. The angle mounts  
will allow the GTC04 tweeters to  
be pointed across the car to the  
listener on the opposite side. This  
will make each listener slightly  
off-axis to the tweeter that is  
closest to that listener, which  
helps to compensate for the fact  
that the listener is always closer  
to one tweeter than to the other  
(see Figure 6).  
Figure 6  
1. The most spacious stereo  
image is achieved when the left  
and right speaker systems are  
placed as wide apart as possible.  
Amplifier output  
set at Full Range or  
High Passed at f > 80Hz  
should have their extremely low  
frequencies blocked by electrical  
means. Active or passive cross-  
overs can be used in order to  
System Design  
10  
There are a variety of system  
Right  
Left  
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)  
achieve the best system fidelity  
and widest dynamic range. Cross-  
over frequency recommendations  
are given in the Specifications.  
GTC  
Midwoofers  
-
-
Left  
Right  
+
+
In-line  
Capacitor  
GTC04  
crossovers, with separate ampli-  
fiers to drive the tweeter and  
midwoofers, you can bypass the  
capacitor on the tweeter and the  
coil on the midwoofer (Figure 9).  
A more advanced system design  
can be achieved by adding a GT,  
Tweeters  
GTC  
Midwoofers  
Left  
Channel  
Right  
Channel  
GTC Component System  
connected to speaker outputs of  
a High-Powered Head Unit  
In-line  
Capacitor  
Figure 7  
GTC04  
Tweeters  
x
GT , GTi, or equivalent sub-  
Left  
Channel  
Right  
Channel  
woofer to your component sys-  
tem. In this case the component  
system will be used as high and  
midbass frequency drivers and  
GTC04 Connected to GTC Midwoofer,  
GTC Midwoofer Connected to Amplifier  
Figure 8  
• Make sure that it will be easy to  
run connecting wires to the  
speakers. Trace speaker wire  
paths before you undertake  
mounting.  
Installation Warnings  
and Tips  
Electronic  
Crossover  
Lo-Pass  
Hi-Pass  
11  
• 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.  
Amp for  
Woofers  
f < 5khz  
Amp for  
Tweeters  
f > 5khz  
• Always disconnect the ground  
wire from the battery before  
doing any work on the vehicle.  
CAUTION: Fuel tanks are  
located directly beneath the rear  
deck in some cars. Check for  
adequate speaker basket clear-  
ance before considering this  
location!  
Left  
Right  
• Make sure that the midwoofer  
will physically fit in the mount-  
ing location. If door mounting,  
check for adequate clearance  
with the window in both rolled-up  
and rolled-down positions as well  
as for interference with window  
crank and power window mecha-  
nism. If mounting elsewhere,  
check for clearance around rear  
deck torsion bars, glove box or  
other structural elements.  
+
GTC  
Midwoofers  
GTC04  
Tweeters  
Right  
Channel  
Left  
Channel  
GTC04 and GTC Midwoofer Connected  
Directly to Amplifier  
• Do not mount speakers where  
water may splash on the cones.  
Figure 9  
As a general rule, do not turn up  
the volume control past the point  
where you hear distortion in the  
form of either signal distortion  
from an overdriven amplifier or  
mechanical noise from an over-  
stressed speaker.  
If you want your system “Loud +  
Clear,” we suggest that you step  
up to a JBL power amplifier  
which has an RMS power rating  
equal to, but not exceeding the  
Maximum Recommended  
WARNING: Playing loud music  
over 120dB can permanently  
damage your hearing. The maxi-  
mum volume levels achievable  
with JBL components and high  
power amplification may exceed  
safe levels for extended listening.  
When listening at high volume  
levels, always use hearing protec-  
tion or turn it down!  
A Note on Power  
12  
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 levels  
which can easily damage loud-  
speakers, even if the rated power  
of the amplifier is below the rated  
maximum power handling of the  
loudspeaker!  
Amplifier Power listed in the  
specifications of your specific  
JBL speaker. This margin of  
reserve power will ensure that  
the amplifier will not attempt to  
deliver more power than its  
design allows. Your dealer will be  
happy to point out which high  
power JBL amplifiers are opti-  
mum for your application and  
listening habits.  
For the best performance and  
system reliability, you should  
select an amplifier with an output  
rating greater than the maximum  
power likely to be used to gener-  
ate the desired volume levels.  
Following these guidelines will  
provide virtually distortion-free  
sound reproduction and long loud-  
speaker life.  
Specifications  
Component Systems  
Model  
GT6.0c  
GT5.0c  
GT4.0c  
13  
Grand Touring Automotive  
6-1/2" 2-way Component  
System  
Grand Touring Automotive  
5-1/4" 2-way Component  
System  
Grand Touring Automotive  
4" 2-way Component  
System  
1" Titanium Composite  
1" Titanium Composite  
1" Titanium Composite  
Balanced-Drive Neodymium  
Magnet Tweeter with 1/2"  
Dome. Surface and Flush  
Mounting Brackets Supplied  
Balanced-Drive Neodymium  
Magnet Tweeter with 1/2"  
Dome. Surface and Flush  
Mounting Brackets Supplied  
Balanced-Drive Neodymium  
Magnet Tweeter with 1/2"  
Dome. Surface and Flush  
Mounting Brackets Supplied  
Graphite-Reinforced  
Graphite-Reinforced  
Graphite-Reinforced  
Polytex Woofer Cone  
Polytex Woofer Cone  
Polytex Woofer Cone  
with Butyl Rubber Surround  
with Butyl Rubber Surround  
with Butyl Rubber Surround  
Speaker Impedance  
4 Ohms  
4 Ohms  
4 Ohms  
Recommended Amplifier  
Power Range  
5 – 125 Watts RMS  
5 – 110 Watts RMS  
5 – 100 Watts RMS  
Frequency Response  
Sensitivity  
50Hz – 21kHz  
91dB  
60Hz – 21kHz  
90dB  
70Hz – 21kHz  
90dB  
Mounting Depth  
Drop In:  
2-3/16"  
2-9/16"  
2-3/8"  
2-1/2"  
1-3/8"  
2"  
Bottom Mount:  
Warranty Terms: 1 Year Transferable Limited Warranty / 2 Year Extended Transferable Limited Warranty (USA Only)  
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 JBL warranty remains in  
effect for one year from the date  
of the first consumer purchase  
unless installed by an authorized  
JBL dealer. Installation by an  
authorized JBL dealer will extend  
the warranty to a period of two  
years.  
include incidental or consequential  
damages. JBL reserves the right  
to replace a discontinued model  
with a comparable model. Any  
replacement units or parts may  
be new or rebuilt.  
What is Covered by this Warranty  
Except as specified below, the JBL  
warranty covers all defects in  
material and workmanship. The  
following are not covered: Damage  
caused by accident, misuse, abuse,  
product modification or neglect;  
damage occurring during ship-  
ment; damage from failure to  
follow instructions contained in  
the instruction manual; damage  
resulting from the performance of  
repairs by someone not authorized  
by JBL; damage caused by instal-  
lation of parts that do not conform  
to JBL specifications; units used for  
commercial or business use; any  
claims based on misrepresenta-  
tions by the seller; products sold on  
an “as-is” or final sale basis; or the  
cost of installing, removing, or  
reinstalling the unit. JBL’s liability  
is limited to the repair or replace-  
ment, at our option, of any  
Do Not Return Products to the JBL  
Factory without Authorization.  
They will be Returned Unopened.  
You are responsible for transport-  
ing your product for repair or  
replacement. JBL will pay reason-  
able return charges for delivery  
to any location in the United States  
if the repair or replacement is  
covered under the warranty.  
14  
To Obtain Warranty Service  
If you require warranty service,  
please return the product to your  
dealer. If this is not possible and  
you live in the United States,  
please call 1-800-336-4JBL, for  
information on how to obtain  
service or replacement.  
Correspondence with JBL should be  
addressed to: JBL Customer  
Service, 80 Crossways Park West,  
Woodbury, NY 11797 or fax us at  
516-496-0812. Outside the United  
States, please contact your local  
distributor.  
This warranty gives you specific  
legal rights. You may also have  
other rights which vary from state  
to state. Some states do not allow  
the exclusion or limitation of  
incidental or consequential  
Who is Protected by this Warranty  
The JBL warranty protects the  
original owner and all subsequent  
owners providing that the JBL  
product was purchased from an  
authorized dealer in the United  
States or purchased by military  
personnel from an authorized  
military outlet. A copy of the  
original dated bill of sale must be  
presented whenever warranty  
service is required.  
If purchased outside the United  
States, contact your local dealer  
for repair or replacement.  
damages or limitations on how long  
an implied warranty lasts, so the  
above may not apply to you.  
defective product and shall not  
15  
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 Park West  
Woodbury, NY 11797  
8500 Balboa Blvd.  
Northridge, CA 91329  
800-336-4JBL (4525)  
A Harman International Company  
Part No. GT405060OM  
Made in China  

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