JBL GTS 100 (serv.man2) User Manual / Operation Manual ▷ View online
25
R– R+
– +
L– L+
– +
GTS
100
L– L+
– +
R– R+
– +
GTS100
Front Outputs
Rear Outputs
Front
Full-Range
Speakers
Rear
Full-Range
Speakers
System 1
Add Power to Main Speakers
Add a GTS100 to the main
(usually front) outputs of
an existing head unit.
Secondary speakers
(usually rear-fill) connect
to the head unit's internal
amplification.
Next Step:
Add a second GTS100 to
amplify the other set of
speakers or a subwoofer
(see System 2).
(usually front) outputs of
an existing head unit.
Secondary speakers
(usually rear-fill) connect
to the head unit's internal
amplification.
Next Step:
Add a second GTS100 to
amplify the other set of
speakers or a subwoofer
(see System 2).
Use the GTS100 to drive 1 or 2
subwoofers with the head unit
powering the main speakers.
This is an excellent way to
upgrade a good stock system.
Next Step:
Add power to Front Full-Range
Speakers (see system 3).
subwoofers with the head unit
powering the main speakers.
This is an excellent way to
upgrade a good stock system.
Next Step:
Add power to Front Full-Range
Speakers (see system 3).
L– L+
– +
R– R+
– +
GTS
100
L– L+
– +
R– R+
– +
– +
GTS100
Front Outputs
Rear Outputs
Front
Full-Range
Speakers
Rear
Full-Range
Speakers
1 or 2
Subwoofers
System 2A
Add a Subwoofer (Active)
Use the GTS100 in
Simultaneous Stereo +
Mono mode to drive main
speakers with subwoofers.
A passive crossover is
needed for this as described
on page 18.
Next Step:
Add a second GTS100 to
power subwoofers and
main speakers individually
(see system 3).
Simultaneous Stereo +
Mono mode to drive main
speakers with subwoofers.
A passive crossover is
needed for this as described
on page 18.
Next Step:
Add a second GTS100 to
power subwoofers and
main speakers individually
(see system 3).
L– L+
– +
R– R+
– +
GTS
100
L–
L+
– +
R–
R+
– +
+
–
Front Outputs
Rear Outputs
Front
Speakers
Rear
Full-Range
Speakers
Subwoofer
System 2B
Add a Subwoofer (Passive)
GTS100
JBL 1394 Manual 7/17/98 11:49 AM Page 25
26
L– L+
– +
R– R+
– +
GTS
100
GTS
100
L– L+
– +
R– R+
– +
+
–
Front Outputs
Rear Outputs
Front Satellite
Speakers
Preamp output to preamp input
Rear
Full-Range
Speakers
System 3
Add a Second GTS100
1 or 2
Subwoofers
GTS100
GTS100
L– L+
– +
R– R+
– +
GTS
100
GTS
100
GTS
100
L–
L+
– +
R–
R+
– +
+
–
Front Outputs
Rear Outputs
Front Satellite
Speakers
Preamp output to preamp input
Rear Satellite
Speakers
System 4
Add Power to the Rear
1 or 2
Subwoofers
GTS100
GTS100
GTS100
L– L+
– +
R– R+
– +
GTS
100
GTS
100
GTS
100
L–
L+
– +
R–
R+
– +
+
–
Front Outputs
Rear Outputs
Front Satellite
Speakers
Rear Satellite
Speakers
Preamp output to preamp input
System 5
Add a Second
Subwoofer Amplifier
Subwoofer Amplifier
GTS
100
+
–
Subwoofers
GTS100
GTS100
GTS100
GTS100
Get more power and system
control by adding a second
GTS100 to power the main
speakers and subwoofers
individually. Use the built-in
crossover to high-pass the
front speakers and low-pass
the subwoofers.
Next Step:
Add power to the Rear Full-
Range Speakers.
Note: For Non-Fading
bass, also connect the
rear-channel head unit
speaker output to the
speaker level input of the
subwoofer GTS100.
control by adding a second
GTS100 to power the main
speakers and subwoofers
individually. Use the built-in
crossover to high-pass the
front speakers and low-pass
the subwoofers.
Next Step:
Add power to the Rear Full-
Range Speakers.
Note: For Non-Fading
bass, also connect the
rear-channel head unit
speaker output to the
speaker level input of the
subwoofer GTS100.
Add an amp for the rear
speakers for higher volume
capability and more control.
Next Step:
Add more subwoofer power.
speakers for higher volume
capability and more control.
Next Step:
Add more subwoofer power.
For the ultimate in
bass output, add a
second subwoofer
amplifier for a total
system power of
340 Watts RMS!
Note the cross-
linking of preamp
inputs for the two
subwoofer
amplifiers to
provide non-
fading bass.
Next Step:
Add additional amplifiers in bridge-mode to the front and
rear main speakers. Then add electronic crossovers and biamp
front and rear speakers.
bass output, add a
second subwoofer
amplifier for a total
system power of
340 Watts RMS!
Note the cross-
linking of preamp
inputs for the two
subwoofer
amplifiers to
provide non-
fading bass.
Next Step:
Add additional amplifiers in bridge-mode to the front and
rear main speakers. Then add electronic crossovers and biamp
front and rear speakers.
JBL 1394 Manual 7/17/98 11:49 AM Page 26
27
In Case of Difficulty
Power-on light does not come on.
• Head unit not on; turn the head unit on.
•
Ground wire is disconnected or
defective; check for continuity with an
ohmmeter between the GTS100’s
ground terminal and a known chassis
ground point.
defective; check for continuity with an
ohmmeter between the GTS100’s
ground terminal and a known chassis
ground point.
•
Battery wire is disconnected or
defective; check for approximately
+12 volts between the GTS100’s
Battery and Ground terminals.
defective; check for approximately
+12 volts between the GTS100’s
Battery and Ground terminals.
•
Blown fuse; check the GTS100’s
20 amp fuse located on the endpanel
near the power connector. If it is blown
replace it with an identical one. If the
new fuse blows immediately, then check
all the wiring connections. If no fault is
found, consult your JBL dealer.
20 amp fuse located on the endpanel
near the power connector. If it is blown
replace it with an identical one. If the
new fuse blows immediately, then check
all the wiring connections. If no fault is
found, consult your JBL dealer.
•
Remote-on wire between the head unit
and the GTS100 is disconnected or
defective; check for +12 volts between
the GTS100 remote on wire and the
ground wire with the head unit on.
and the GTS100 is disconnected or
defective; check for +12 volts between
the GTS100 remote on wire and the
ground wire with the head unit on.
•
Head unit connected to speaker-level
input is not BTL high-power type and no
remote wire is connected; connect
remote turn-on wire to switched +12V
source.
input is not BTL high-power type and no
remote wire is connected; connect
remote turn-on wire to switched +12V
source.
Remote-on light is illuminated, but no
•
Incorrect switch settings; make sure
sound is heard from some or all of the
that all switches (input mode, line, and
speakers.
crossover) are in their correct positions
for your system configuration.
for your system configuration.
•
Incorrectly connected or shorted
speaker wires; check for shorts in
wiring.
speaker wires; check for shorts in
wiring.
•
Defective or disconnected audio cables;
check for continuity and replace if
necessary.
check for continuity and replace if
necessary.
JBL 1394 Manual 7/17/98 11:49 AM Page 27
28
(continued)
Remote-on light is illuminated, but no
•
Incorrect gain adjustment; verify that
sound is heard from some or all of the
the GTS100 gain controls are not
speakers.
turned completely down. If they are,
sound output level may be very low
and may give the impression that the
system (or part of the system) is dead.
sound output level may be very low
and may give the impression that the
system (or part of the system) is dead.
•
Defective head unit or signal processor;
check each component for proper
wiring and operation.
check each component for proper
wiring and operation.
•
Defective GTS100; If there is audio
signal present at the inputs of the
GTS100 and there is no output, the
GTS100 may be defective.
signal present at the inputs of the
GTS100 and there is no output, the
GTS100 may be defective.
Alternator whine through the audio
•
Ground loops; Follow the wiring
system with the engine running.
suggestions in the section called
“Solving Noise Problems.” Also, verify
that the chassis grounding point you
have chosen is true ground by checking
for continuity between the chassis
ground point and battery ground.
“Solving Noise Problems.” Also, verify
that the chassis grounding point you
have chosen is true ground by checking
for continuity between the chassis
ground point and battery ground.
Bass output from speakers too low.
•
Speaker wired out of phase; check for
proper polarity on all speaker wiring
(+ amp terminal to + speaker terminal
and – amp terminal to – speaker
terminal.
proper polarity on all speaker wiring
(+ amp terminal to + speaker terminal
and – amp terminal to – speaker
terminal.
If you want to talk to us about any problems, call JBL Customer Service at
1-800-336-4JBL Between 9AM and 5PM Eastern time.
1-800-336-4JBL Between 9AM and 5PM Eastern time.
JBL 1394 Manual 7/17/98 11:49 AM Page 28
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