INSTALLATION WARNINGS AND TIPS
ABOUT THESE
INSTRUCTIONS
Installation of automotive stereo com-
ponents can require extensive experi-
ence with a variety of mechanical and
electrical procedures. Although these
instructions explain how to install
Grand Touring Series multielement
speakers in a general sense, they do
not show the exact installation meth-
ods 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
installation options.
LOUD MUSIC AND
HEARING
Playing loud music in an automobile
can hinder your ability to hear traffic
as well as permanently damage your
hearing. The maximum volume levels
achievable with JBL speakers, com-
bined 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!
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 win-
dow’s travel, and verify that a
mounted speaker will not interfere
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.
INSTALLATION
Figure 1.
Mounting the GTO426, GTO526, GTO626, GTO636, GTO926 or GTO936
using the supplied grille.
Figure 2.
Modifying the GTO426 to be installed in locations requiring fewer than
four mounting “ears.”
NOTE: Grip the tab (preferably with pliers) and bend to detach it from the
speaker.
Rotate tweeter so it is angled toward the
listener using the UniPivot
™
(patent no. 6,002,780)
feature on the GTO526, GTO626, GTO926 and GTO8626.
