GTO 6506c (serv.man7) - JBL Car Audio User Guide / Operation Manual. Page 2

ABOUT THESE 
INSTRUCTIONS
Installation of automotive stereo
components can require extensive
experience with a variety of
mechanical and electrical proce-
dures. Although these instructions
explain how to install Grand
Touring Series Component Systems
in a general sense, they do not
show the exact installation
methods for your particular vehicle.
If you do not feel you have the
experience, do not attempt the
installation yourself, but instead
ask your authorized JBL car audio
dealer about professional installa-
tion options.

LOUD MUSIC AND
HEARING
Playing loud music in an auto-
mobile can hinder your ability to
hear traffic, as well as permanently
damage your hearing. The maxi-
mum volume levels achievable with
JBL speakers, combined with high
power amplification, may exceed
safe levels for extended listening.
We recommend using low volume
levels when driving. 
JBL accepts no liability for hearing
loss, bodily injury or property 

damage as a result of use or 

misuse of this product.

REAR DECK 
PRECAUTION
In some cars, fuel tanks may be
located directly beneath the rear
deck. Before installation, make
sure there is adequate speaker
basket clearance before
considering this location!

ABOUT THE CONTENTS
The Grand Touring Series
Component System includes:
• 130mm, 160mm and 165mm

woofer

• Grille and mounting adapter(s)
• 1" tweeter with surface/flush 

I-Mount™ (patent no. 5,859,917)
kits

• Crossover network with

mounting screws

NOTE:  The supplied crossover
network is designed to work with
the above-listed transducers. Do
not substitute another crossover
network or use other speakers
when connecting the system (see
Figure 8A and 8B).

INSTALLATION TIPS
• Always wear protective eyewear

when using any tools.

• Turn off all audio components

and other electrical devices
before you start. Disconnect the
(–) negative lead from your
vehicle’s battery.

• Keep speakers in their package

until final installation. When
moving a speaker, always rest it
with the cone or dome facing up.
Never use force to install any
speaker.

• Check clearances on both sides

of a planned mounting surface
before drilling any holes or
installing any screws. Remember
that the screws can extend
behind the surface.

• At the installation sites, locate 

and make a note of all fuel lines,
hydraulic brake lines, vacuum
lines and electrical wiring. Use
extreme caution when cutting or
drilling in and around these
areas.

• Before drilling or cutting holes,

use a utility knife to remove
unwanted fabric or vinyl, to keep
material from snagging in a drill
bit or saw.

• For door installations, check the

clearance with the windows
throughout the range of the
window’s travel, and verify that a
mounted speaker will not inter-
fere with the window crank or
power window mechanism. 

• If mounting speakers elsewhere,

check for clearance around rear
deck torsion bars, glove box or
other structural elements.

• Do not mount speakers where

they will get wet.

• If possible, select a mounting site

for the crossover network that is
near the speakers and provides
easy access for connections.

Figure 1. Mounting the GTO506c
woofer with the grille.

Figure 2. Mounting the GTO6506c
woofer with the grille. 

Figure 3. Mounting the GTO606c
woofer in a standard 165mm
opening.

Figure 4. Mounting the GTO606c in
a 160mm speaker location. 

ADAPTERRING