JBL 500 GTi User Manual / Operation Manual ▷ View online
Woofer/Midrange, and a laboratory-
optimized crossover. The most popular
system configuration is a hybrid using an
active crossover for the subwoofer to
midrange crossover point, and a passive
crossover for the midrange to tweeter
crossover. Your GTi Competition series
dealer is uniquely qualified to help guide
you on the best system configuration for
your needs.
optimized crossover. The most popular
system configuration is a hybrid using an
active crossover for the subwoofer to
midrange crossover point, and a passive
crossover for the midrange to tweeter
crossover. Your GTi Competition series
dealer is uniquely qualified to help guide
you on the best system configuration for
your needs.
Component Placement
The location of each of the
loudspeakers plays a vital role in achieving
proper frequency response and spacious
imaging. Because the 400 and 500GTi
have an extremely wide and smooth
dispersion pattern, excellent performance
may be achieved in any vehicle. Because
of the wide variety of vehicles, there is
not one “right” way to locate the 400 and
500GTi, however knowledge of the
following considerations will help you get
the most from your system:
1.
proper frequency response and spacious
imaging. Because the 400 and 500GTi
have an extremely wide and smooth
dispersion pattern, excellent performance
may be achieved in any vehicle. Because
of the wide variety of vehicles, there is
not one “right” way to locate the 400 and
500GTi, however knowledge of the
following considerations will help you get
the most from your system:
1.
The most spacious stereo image is
achieved when the 400 and 500GTi’s
are placed as wide apart as possible.
achieved when the 400 and 500GTi’s
are placed as wide apart as possible.
2.
The best center image will be
achieved when the distance from the
left speaker to your left ear is as equal
as possible to the distance from the
right speaker to your right ear. This is
most easily achieved by placing the
400 and 500GTi as far forward as
you can.
achieved when the distance from the
left speaker to your left ear is as equal
as possible to the distance from the
right speaker to your right ear. This is
most easily achieved by placing the
400 and 500GTi as far forward as
you can.
3.
The best system integration is
achieved when the woofer/midrange
is mounted close to the tweeter.
Installing the tweeter close to the
woofer/midrange helps smooth the
transition from woofer/midrange to
tweeter at the crossover point.
achieved when the woofer/midrange
is mounted close to the tweeter.
Installing the tweeter close to the
woofer/midrange helps smooth the
transition from woofer/midrange to
tweeter at the crossover point.
4.
You will get the best frequency
response when the path from the
woofer/midrange and tweeter to
your ear is unobstructed.
response when the path from the
woofer/midrange and tweeter to
your ear is unobstructed.
5.
Because of the high acoustic energy
capability of the 400 and 500GTi, they
must be securely mounted in a rigid
panel which is free from resonances,
rattles and air leakage.
capability of the 400 and 500GTi, they
must be securely mounted in a rigid
panel which is free from resonances,
rattles and air leakage.
Installation Warnings and Tips
•
Be careful not to cut or drill into fuel
tanks, fuel lines, brake or hydraulic
lines, vacuum lines or electrical wiring
when working on your vehicle. Inspect
behind panels before you cut or drill.
tanks, fuel lines, brake or hydraulic
lines, vacuum lines or electrical wiring
when working on your vehicle. Inspect
behind panels before you cut or drill.
•
Be sure to check for clearance of
window, cranks and linkages when
mounting speakers in door panels.
window, cranks and linkages when
mounting speakers in door panels.
•
Do not use the 400 and 500GTi
unmounted. Failure to securely mount
this product could result in damage or
injury, particularly in the event of an
accident.
unmounted. Failure to securely mount
this product could result in damage or
injury, particularly in the event of an
accident.
•
Do not mount the 400 and 500GTi
where it will get wet.
where it will get wet.
•
Always disconnect the ground wire
from the battery before doing any
work on the vehicle.
from the battery before doing any
work on the vehicle.
5
400/600 MANUAL.QXP 7/17/98 11:10 AM Page 5
Mounting Instructions
Pick a mounting location after reading
the recommendations in the Component
Location section of this manual.
Location section of this manual.
Mounting Speakers in
Stock Hole Locations
1.
Stock Hole Locations
1.
Access the stock speaker location and
remove the stock speaker. The 400 and
500GTi include mounting ring adaptors
which allow the speaker to be mounted in
standard 4" and 5
remove the stock speaker. The 400 and
500GTi include mounting ring adaptors
which allow the speaker to be mounted in
standard 4" and 5
1
/
4
" holes respectively.
2.
Attach the mounting ring adaptor to
the stock location using four #8 x 1
the stock location using four #8 x 1
1
/
4
"
screws as shown in Figure A.
3.
Attach the included foam gasket to
the rear mounting surface of the
woofer/midrange. Connect the speaker
wire to the speaker by either soldering
(preferred) or using crimp terminals. Make
sure to observe polarity when connecting
wire to the speaker. The plus terminal is
indicated by the red "W" marking.
the rear mounting surface of the
woofer/midrange. Connect the speaker
wire to the speaker by either soldering
(preferred) or using crimp terminals. Make
sure to observe polarity when connecting
wire to the speaker. The plus terminal is
indicated by the red "W" marking.
4.
Mount the woofer/midrange driver to
the mounting ring adaptor using three
#8 x
the mounting ring adaptor using three
#8 x
7
/
16
" screws and three shoulder
washers as shown in Figure A.
5.
Replace the stock speaker panels.
Mounting Speakers in Custom Hole
Locations
1.
Locations
1.
Using the fabric displacement ring as
a template, mark the location of the
3 screw holes and the speaker cutout
holes. Before cutting or drilling
make sure that there are no car
components, electrical wiring or any
other items that could be damaged.
Also choose an orientation for the
a template, mark the location of the
3 screw holes and the speaker cutout
holes. Before cutting or drilling
make sure that there are no car
components, electrical wiring or any
other items that could be damaged.
Also choose an orientation for the
speaker which will align the grille logo
in the desired orientation.
in the desired orientation.
2.
Cut out the speaker hole at the
mounting location. Drill 3 pilot screw
holes using a
mounting location. Drill 3 pilot screw
holes using a
1
/
8
" (3mm) drill.
3.
Run speaker wire to the hole location
making sure that either an active or
passive crossover is connected to the
speaker.
making sure that either an active or
passive crossover is connected to the
speaker.
4.
Put the speaker fabric displacement
ring under the speaker as shown in
Figure B.
ring under the speaker as shown in
Figure B.
5.
Attach the included foam gasket to
the rear mounting surface of the
woofer/midrange. Connect the
speaker wire to the speaker by either
soldering (preferred) or using crimp
terminals. Make sure to observe
polarity when connecting wire to the
speaker. The plus terminal is indicated
by the red "W" marking.
the rear mounting surface of the
woofer/midrange. Connect the
speaker wire to the speaker by either
soldering (preferred) or using crimp
terminals. Make sure to observe
polarity when connecting wire to the
speaker. The plus terminal is indicated
by the red "W" marking.
6.
Mount the speaker to the hole location,
using three #8 x 1
using three #8 x 1
1
/
4
" screws and three
shoulder washers as shown in Figure B.
7.
Push the grille down onto the speaker
making sure the tabs match with the
slots in the grille. Twist the grille about
making sure the tabs match with the
slots in the grille. Twist the grille about
1
/
2
"
Clockwise to lock the grille into place.
6
Figure A
MOUNTING
RING
ADAPTOR
400/600 MANUAL.QXP 7/17/98 11:10 AM Page 6
Note: The metal grille is designed so
that it can be covered with grille cloth if
desired. Simply remove the metal grille
from the grille frame as shown in Figure C.
Then use spray adhesive to glue and wrap
the grille cloth to the metal grille. Push the
metal grille with cloth back in the plastic
trim ring. For even better interior matching
it is also possible to use plastic compatible
paint to match the grille frame to the
vehicle’s interior.
desired. Simply remove the metal grille
from the grille frame as shown in Figure C.
Then use spray adhesive to glue and wrap
the grille cloth to the metal grille. Push the
metal grille with cloth back in the plastic
trim ring. For even better interior matching
it is also possible to use plastic compatible
paint to match the grille frame to the
vehicle’s interior.
Logo Orientation on Grille
The orientation of the logo on the
grille relative to the grille frame can be
adjusted. Simply remove the metal grille
and reassemble the metal grille to the
grille frame utilizing a different tab slot.
adjusted. Simply remove the metal grille
and reassemble the metal grille to the
grille frame utilizing a different tab slot.
Wiring
Use 2-conductor stranded type,
insulated wire to connect the 400 and
500GTi to its crossover, and the crossover
500GTi to its crossover, and the crossover
to the amplifier. A minimum wire gauge of
18AWG is recommended, with larger size
wire suggested for runs longer than 10 feet.
18AWG is recommended, with larger size
wire suggested for runs longer than 10 feet.
The polarity (the positive / negative
orientation of the connections) for every
speaker-to-amplifier connection must be
consistent from left to right channel to
assure proper imaging and optimum
frequency response. This does not mean
speaker-to-amplifier connection must be
consistent from left to right channel to
assure proper imaging and optimum
frequency response. This does not mean
7
Figure B
Figure C
FABRIC
DISPLACEMENT
RING
GRILLE
FRAME
METAL
GRILLE
AMPLIFIER
AMPLIFIER
HEAD
UNIT
ACTIVE
X-OVER
AMPLIFIER
HEAD
UNIT
PASSIVE
X-OVER
AMPLIFIER
AMPLIFIER
tweeter
JBL 08GTi
tweeter
JBL 08GTi
midrange
JBL 400GTi
midrange
JBL 400GTi
midbass
JBL 600GTi
midbass
JBL 600GTi
woofer
JBL 1200GTi
woofer
JBL 1200GTi
Figure D
400/600 MANUAL.QXP 7/17/98 11:10 AM Page 7
that the 400 and 500GTi should always be
connected in the same polarity as the tweeter
however. It is possible, that due to the
difference in the distance the sound travels
from the woofer/midrange to your ears
compared to the distance from the tweeters in
a typical system, and the short wavelengths of
sound at the crossover frequency, that a
connection where the tweeters are connected
in reverse polarity from the other drivers in the
system may actually result in better sound.
Because there is no way to accurately predict
this before installation, we recommend that
you try the connection both ways, and leave it
in the polarity that gives the smoothest audible
transition between the woofer/midrange and
tweeter.
connected in the same polarity as the tweeter
however. It is possible, that due to the
difference in the distance the sound travels
from the woofer/midrange to your ears
compared to the distance from the tweeters in
a typical system, and the short wavelengths of
sound at the crossover frequency, that a
connection where the tweeters are connected
in reverse polarity from the other drivers in the
system may actually result in better sound.
Because there is no way to accurately predict
this before installation, we recommend that
you try the connection both ways, and leave it
in the polarity that gives the smoothest audible
transition between the woofer/midrange and
tweeter.
System Connections
There are a variety of system options
available with the 400 and 500GTi. The
simplest configuration is to use the 400 and
500GTi connected in parallel to a tweeter
which includes a high-pass crossover such as
the 08GTi, GT03 or GT07. Because the 400
and 500GTi is specifically designed for mid
simplest configuration is to use the 400 and
500GTi connected in parallel to a tweeter
which includes a high-pass crossover such as
the 08GTi, GT03 or GT07. Because the 400
and 500GTi is specifically designed for mid
frequency operation, it should have its high
and extremely low frequencies blocked by
electrical means in order to achieve the best
system fidelity and the widest dynamic range.
and extremely low frequencies blocked by
electrical means in order to achieve the best
system fidelity and the widest dynamic range.
For the best performance, we recom-
mend that an active crossover with a
minimum of 12dB per octave slope be used
for the transition point between the subwoofer
and the 400 or 500GTi. The optimum
crossover frequency for this transition is de-
pendent on the specific components used, the
vehicle, and other installation details. As a
general rule, the crossover frequency should
be as low as possible to achieve the best sys-
tem imaging. You can fine-tune the crossover
after the installation is complete for the best
sound. A good place to start your tuning
process is between 50Hz and 150Hz when
using the 500GTi and between 80Hz and
150Hz when using the 400GTi. In 4-way sys-
tems using a midbass driver such as the
600GTi, the crossover point may be raised
higher without detrimentally affecting imaging
as long as the midbass drivers can be
mounted reasonably close to the midranges.
This higher crossover fre-quency will allow the
system to play louder. Since no crossover is
minimum of 12dB per octave slope be used
for the transition point between the subwoofer
and the 400 or 500GTi. The optimum
crossover frequency for this transition is de-
pendent on the specific components used, the
vehicle, and other installation details. As a
general rule, the crossover frequency should
be as low as possible to achieve the best sys-
tem imaging. You can fine-tune the crossover
after the installation is complete for the best
sound. A good place to start your tuning
process is between 50Hz and 150Hz when
using the 500GTi and between 80Hz and
150Hz when using the 400GTi. In 4-way sys-
tems using a midbass driver such as the
600GTi, the crossover point may be raised
higher without detrimentally affecting imaging
as long as the midbass drivers can be
mounted reasonably close to the midranges.
This higher crossover fre-quency will allow the
system to play louder. Since no crossover is
perfect, it is advisable to keep your crossover
points away from the range where your
hearing is most sensitive. Therefore we
recommend that you try to keep the high-pass
frequency below 250Hz and the low-pass
above 2500Hz. This lets the 400 or 500GTi
reproduce the entire range of frequencies,
covering the most important vocal and
lead instrument fundamentals without a
crossover point.
points away from the range where your
hearing is most sensitive. Therefore we
recommend that you try to keep the high-pass
frequency below 250Hz and the low-pass
above 2500Hz. This lets the 400 or 500GTi
reproduce the entire range of frequencies,
covering the most important vocal and
lead instrument fundamentals without a
crossover point.
If you prefer to use all passive
crossovers, you will need to construct or
purchase either a low-pass or band-pass
filter for the midrange driver and match it
to a high-pass filter for the tweeter. When a
matched GTi Competition Series system
is used, the best crossover choice is the
laboratory-optimized, system-matched
crossover which is included with the 408GTi or
508GTi system. If you have not yet installed
your components, we suggest that you
consult your dealer for this system package.
purchase either a low-pass or band-pass
filter for the midrange driver and match it
to a high-pass filter for the tweeter. When a
matched GTi Competition Series system
is used, the best crossover choice is the
laboratory-optimized, system-matched
crossover which is included with the 408GTi or
508GTi system. If you have not yet installed
your components, we suggest that you
consult your dealer for this system package.
The most advanced system designs
use active electronic crossovers such as
the JBL GTX2, GTX4 or GTX47 at both the
subwoofer(or midbass) to woofer/midrange
transition point and at the woofer/midrange
the JBL GTX2, GTX4 or GTX47 at both the
subwoofer(or midbass) to woofer/midrange
transition point and at the woofer/midrange
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400/600 MANUAL.QXP 7/17/98 11:10 AM Page 8
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