JBL GRAND TOURING GTO4060 User manual

GTO4060
GTO2060
car audio
power
amplifier
owner’s manual

INSTALLATION
2
THANK YOU
for purchasing a JBL GTO amplifier. In
order that we may better serve you should
you require warranty service for your new
amplifier, please retain your original pur-
chase receipt and register your new JBL
amplifier online at www.jbl.com.
WARNING
Playing loud music in an automobile
can hinder your ability to hear traffic and
permanently damage your hearing. We
recommend listening at low or moderate
levels while driving your car. JBL accepts
no liability for hearing loss, bodily injury or
property damage resulting from the use or
misuse of this product.
IMPORTANT
To get the best performance from your
JBL GTO amplifier, we strongly recommend
that installation be entrusted to a qualified
professional. Although these instructions
explain how to install GTO amplifiers in a
general sense, they do not show specific
installation methods that may be required
for your particular vehicle. If you do not
have the necessary tools or experience,
do not attempt the installation yourself.
Instead, please ask your authorized JBL
car audio dealer about professional
installation.
INSTALLATION
WARNINGS AND TIPS
• Always wear protective eyewear when
using tools.
• Turn off the audio system and other
electrical devices before you start.
Disconnect the (–) negative lead from
your vehicle’s battery.
• 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 cut-
ting or drilling in and around these areas.
• Check clearances on both sides of
aplanned mounting surface before
drilling any holes or installing any
screws. Remember that the screws
can extend behind the surface.
• Before drilling or cutting holes, use a
utility knife to remove unwanted fabric
or vinyl to keep material from snagging
in a drill bit.
• When routing cables, keep input-signal
cables away from power cables and
speaker wires.
• When making connections, make
certain they are secure and properly
insulated.
•If the amplifier’sfuse must be replaced,
use only the same type and rating as
that of the original. Do not substitute
another kind.
CHOOSING A LOCATION
AND MOUNTING THE
AMPLIFIER
Choose a mounting location in the trunk
or cargo area where the amplifier will not
be damaged by shifting cargo. Amplifier
cooling is essential for proper amplifier
operation. If the amplifier is to be installed
in an enclosed space, make sure there is
sufficient air circulation for the amplifier
to cool itself.
When mounting the amplifier under a
seat, ensure that it is clear of all moving
seat parts and does not affect the seat
adjustments. Mount the amplifier so it
is not damaged by the feet of backseat
passengers. Make sure that the amplifier
is mounted securely using nuts and bolts
or the supplied mounting screws.
Mount the amplifier so that it remains
dry – never mount an amplifier outside
the vehicle or in the engine compartment.

3
INSTALLATION
POWER CONNECTIONS
The GTO amplifiers require a reliable
connection to the vehicle’s electrical
system in order to perform optimally.
See Figures 1 and 2 for terminal
connection locations. Please adhere
to the following instructions carefully:
Ground Connection
Connect the amplifier’s Ground (GND)
terminal to a solid point on the vehicle’s
metal chassis, as close to the amplifier
as possible. Refer to the wire gauge chart to
determine minimum wire gauge size. Sand
away any paint from this location; use a star-
type-lock washer to secure the connection.
Power Connection
Connect a wire (see chart at right for
appropriate gauge) directly to the vehicle’s
positive battery terminal, and install an
appropriate fuse holder within 30cm of the
battery terminal. Do not install the fuse at
this time. Route the wire to the amplifier’s
location, and connect it to the amplifier’s
Positive (+12V) terminal. Be sure to use
appropriate grommets whenever routing
wires through the firewall or other sheet
metal. Failure to adequately protect the
positive wire from potential damage may
result in a vehicle fire. When you are done
routing and connecting this wire, you may
install the fuse at the battery.
Remote Connection
Connect the amplifier’s Remote (REM)
terminal to the source unit’s Remote Turn-
On lead using a minimum of 0.75mm2wire.
NOTE: If your source unit does not have a
remote turn-on connection, connect the
amplifier’s (REM) terminal to the vehicle’s
accessory circuit.
Speaker Connections
Refer to the application guides on the
pages that follow. Speaker connections
should be made using a minimum of
1.5mm2wire.
Wire Gauge Chart
Amplifier Maximum Minimum
Model Current Draw Wire Gauge
GTO2060 33A #8 AWG/8mm2
GTO4060 45A #7 AWG/10mm2
These recommendations assume 3m – 4m
wire runs. If your installation differs mark-
edly, you will need to adjust the wire gauge
accordingly.
Figure 1. Terminal connection end plate for GTO4060.
Figure 2. Terminal connection end plate for GTO2060.

4
APPLICATIONS
The GTO4060 can be set up for stereo
4-channel, 3-channel or bridged
2-channel operation, as shown in
Figures 3 through 5.
NOTE: For simplicity, Figures 3 through
7do not show power, remote and input
connections.
NOTE: Minimum speaker impedance
for stereo operation is 2 ohms.
Minimum speaker impedance for
bridged operation is 4 ohms.
Figure 3. GTO4060 amplifier in 4-channel (stereo)
operation to drive front and rear full-range speakers.
Figure 4. GTO4060 is set up for 3-channel operation
to drive a set of full-range speakers and a subwoofer.
Front LeftFront Right
Front LeftFront Right
R
Figure 5. GTO4060 used in bridged 2-channel mode to
drive a set of components or subwoofers. Set crossovers
according to application.
Front LeftFront Right
Rear LeftRear Right
Front LeftFront Right

5
APPLICATIONS
LeftRight
LeftRight
Figure 6. GTO2060 used in 2-channel (stereo)
operation to drive a set of full-range speakers.
Figure 7. GTO2060 used in bridge mode to drive a
subwoofer.

6
CONTROLS AND SETUP
SETTING THE
CROSSOVER(S)
Determine your system plans and set
the crossover mode switch accordingly.
If your system design does not include
asubwoofer, set the crossover mode to
OFF and skip to “Setting Input Sensitivity.”
Initially set the crossover frequency
control midway. While listening to music,
adjust the crossover for the least
perceived distortion from the speakers,
allowing them to reproduce as much
bass as possible.
Systems using a separate subwoofer set
the crossover mode to HP (high pass) for
your full-range speakers. Adjust the
crossover frequency to limit bass and
provide increased system volume with
less distortion.
For subwoofers, choose the highest
frequency that removes vocal information
from the sound of the subwoofer.
If using the GTO4060 or GTO2060 to drive a
subwoofer(s), set the crossover mode to
LP (low pass).
SETTING INPUT
SENSITIVITY
1. Initially turn the GAIN control(s) to
minimum (counter clockwise).
2. Reconnect the (–) negative lead to the
vehicle’s battery. Apply power to the
audio system and play a dynamic music
track.
3. On the source unit, increase the volume
control to 3/4 volume. Slowly increase
the GAIN control(s) toward three o’clock
until you hear slight distortion in the
music. Then reduce the GAIN slightly
until distortion is no longer heard.
NOTE: After the source unit is on, a blue
LED will light, indicating the amplifier is on.
If not, check the wiring, especially the
remote connection from the source unit.
Also refer to “Troubleshooting” guide.
SYMPTOM LIKELY CAUSE SOLUTION
No audio No voltage at BATT+ Check voltages at
(POWER LEDs or REM terminals, amplifier terminals
are off) or bad or no ground with VOM
connection
No audio Amplifier is Make sure amplifier
(POWER overheated cooling is not blocked
LEDs are on) at mounting location;
verify speaker-system
impedance is within
specified limits
Voltage more than 16V Check vehicle
or less than 8.5V on charging system
BATT+ connection
No audio Voltage less than 9V on Check vehicle
BATT+ connection charging system
DC voltage on Amplifier may need
amplifier output service; see enclosed
warranty card for
service information
Distorted audio Input sensitivity is Check GAIN
not set properly, or level setting; or
amplifier or source check speaker wires
unit is defective for shorts or grounds
Distorted audio Short circuit in Remove speaker leads
speaker or wire one at a time to locate
shorted speaker or
wire, then repair
Music lacks Speakers are not Check speaker
“punch” connected properly connections for
proper polarity
TROUBLESHOOTING

7
GTO4060
•55W RMS x 4 channels at 4 ohms and ≤1% THD + N
•Signal-to-noise ratio: 80dBA (reference 1W into 4 ohms)
•75W RMS x 4 channels at 2 ohms, 14.4V supply and ≤1% THD + N
•150W RMS x 2 channels at 4 ohms, 14.4V supply and ≤1% THD + N
•Dynamic power: 100W at 2 ohms
•Effective damping factor: 6.354 at 4 ohms
•Frequency response: 10Hz – 100kHz (–3dB)
•Maximum input signal: 4V
•Maximum sensitivity: 100mV
•Output regulation: 0.07dB at 4 ohms
•Dimensions (L x W x H): 358mm x 294mm x 55mm
•Fuses: 20A x 2
GTO2060
•80W RMS x 2 channels at 4 ohms and ≤1% THD + N
•Signal-to-noise ratio: 80dBA (reference 1W into 4 ohms)
•120W RMS x 2 channels at 2 ohms, 14.4V supply and ≤1% THD + N
•240W RMS x 1 channel at 4 ohms, 14.4V supply and ≤1% THD + N
•Dynamic power: 170W at 2 ohms
•Effective damping factor: 6.211 at 4 ohms
•Frequency response: 10Hz – 50kHz (–3dB)
•Maximum input signal: 4V
•Maximum sensitivity: 100mV
•Output regulation: 0.08dB at 4 ohms
•Dimensions (L x W x H): 358mm x 294mm x 55mm
•Fuses: 25A x 1
SPECIFICATIONS
This product is intended for mobile applications without connection to the
110/230 volts mains.
Features, specifications and appearance are subject to change without notice.

Declaration of Conformity
We, Harman Consumer Group International
2, route de Tours
72500 Chateau du Loir
France
declare in own responsibility that the products
described in this owner’s manual are in compliance
with technical standards:
EN 55013:2001 + A1:2003
EN 55020:2002 + A1:2003
Klaus Lebherz
Harman Consumer Group
International
Chateau du Loir,France 1/06
JBL Consumer Products
250 Crossways Park Drive
Woodbury,NY 11797 USA
©2006 Harman International
Industries, Incorporated. All rights reserved.
JBL and Harman International are trademarks of
Harman International Industries, Incorporated,
registered in the United States and/or other countries.
Part No. GTO40602060OM1/06
www.jbl.com