Read JBL C508GTi (serv.man3) User Guide / Operation Manual online
Important: Installation of automotive
stereo components can require extensive
experience performing a variety of mechani-
cal and electrical procedures. Although
these instructions explain how to install a
GTi component system in a general sense,
they do not show the exact installation
method for your particular car. If you don’t
feel you have the necessary tools or experi-
ence, ask your authorized JBL car audio
dealer about professional installation
options.
stereo components can require extensive
experience performing a variety of mechani-
cal and electrical procedures. Although
these instructions explain how to install a
GTi component system in a general sense,
they do not show the exact installation
method for your particular car. If you don’t
feel you have the necessary tools or experi-
ence, ask your authorized JBL car audio
dealer about professional installation
options.
Warning: Playing loud music in your auto-
mobile can permanently damage your hear-
ing as well as hinder your ability to hear traf-
fic. We recommend listening at low volume
while driving. JBL accepts no liability for
hearing loss, bodily injury or property dam-
age resulting from use or misuse of this
product.
mobile can permanently damage your hear-
ing as well as hinder your ability to hear traf-
fic. We recommend listening at low volume
while driving. JBL accepts no liability for
hearing loss, bodily injury or property dam-
age resulting from use or misuse of this
product.
A Note About System Performance
For the best performance possible, the GTi
components should be used with a two-
channel amplifier with output power of at
least 50W RMS per channel. The passive
crossover contains impedance compensa-
tion circuitry and has been computer-opti-
mized for the flattest possible frequency
response with the tweeter flush-mounted,
on-axis with the listener. The combined
response of the speakers and passive
crossover constitutes a 4th-order Linquitz-
Riley acoustic alignment and cannot be
duplicated with any electronic crossover
currently available for car audio use. Conse-
quently, bi-amping a GTi component system
with an electronic crossover is not recom-
mended.
For the best performance possible, the GTi
components should be used with a two-
channel amplifier with output power of at
least 50W RMS per channel. The passive
crossover contains impedance compensa-
tion circuitry and has been computer-opti-
mized for the flattest possible frequency
response with the tweeter flush-mounted,
on-axis with the listener. The combined
response of the speakers and passive
crossover constitutes a 4th-order Linquitz-
Riley acoustic alignment and cannot be
duplicated with any electronic crossover
currently available for car audio use. Conse-
quently, bi-amping a GTi component system
with an electronic crossover is not recom-
mended.
Speaker Placement
Figures 1–4 show possible speaker
placements in the order of most desirable to
least desirable. Kick-panel mounting will
provide the best staging and imaging in
most vehicles.
Figures 1–4 show possible speaker
placements in the order of most desirable to
least desirable. Kick-panel mounting will
provide the best staging and imaging in
most vehicles.
TWEETER
on dash
on dash
WOOFER
in factory-
door location
in factory-
door location
TWEETER
on kick panel
on kick panel
WOOFER
in factory-
door location
in factory-
door location
TWEETER
and
WOOFER
on kick panel
and
WOOFER
on kick panel
WOOFER
in factory-
door location
in factory-
door location
TWEETER
in high/forward
location on door
in high/forward
location on door
Fig 1
Fig 3
Fig 2
Fig 4
Figure 1.
Mounting the woofer and tweeter in the kick
panels
Mounting the woofer and tweeter in the kick
panels
Figure 2.
Mounting the woofer in the door and the tweeter
in the kick panel
Mounting the woofer in the door and the tweeter
in the kick panel
Figure 3.
Mounting the woofer and tweeter in the doors
Mounting the woofer and tweeter in the doors
Tweeter Installation
Figure 4.
Mounting the woofer in the door and the tweeter
in the dash
Mounting the woofer in the door and the tweeter
in the dash
–
+
–
+
Figure 5.
Surface-mounting the tweeter:
first push in (1), then turn (2)
Surface-mounting the tweeter:
first push in (1), then turn (2)
Figure 6.
Flush-mounting the tweeter:
first push in (1), then turn (2)
Flush-mounting the tweeter:
first push in (1), then turn (2)
02
The Official Brand of Live Music
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