®
GRAND TOURING
SERIES
GTO804
GTO1002D
GTO1004D
GTO1202D
GTO1204D
GTO1502D
GTO1504D
car audio subwoofer
owner’s manual
THANK YOU
®
®
for purchasing a JBL Grand Touring Series subwoofer.
Subwoofer installation requires woodworking skills and some
experience in disassembling and reassembling automotive
interiors. If you lack the tools or necessary skills, have your
subwoofer installed by an authorized JBL dealer.
CONNECTING YOUR SUBWOOFER TO YOUR AMPLIFIER
JBL Grand Touring Series
2. You may connect the coils of a
dual-voice coil woofer in series,
but we recommend that you avoid
connecting separate woofers in
series.
To design a subwoofer system
that maximizes available amplifier
power, keep the following rules
in mind:
Figure 1. Parallel connection
subwoofers are available in two
different configurations: as dual
4-ohm voice coils or as dual 2-ohm
voice coils. Depending on the
amplifiers you are using, you may
use GTO subwoofers in singles or
multiples to maximize the power
available from your amplifiers. To
achieve the maximum amplifier
output possible, you should design
a speaker system that provides
the lowest impedance that your
amplifier will drive safely. When
designing a subwoofer system,
consider the following rules:
1. The total system impedance
of woofers in parallel can be
calculated using the formula:
3. You must use both coils of a dual-
voice coil woofer connected
either in series or in parallel.
1
NOTE: The GTO1004D, GTO1204D
and GTO1504D come with both
jumpers installed for a parallel
configuration.
Impedance=
1
w1
1
1
w3
...
4. Most amplifiers deliver exactly
the same amount of power
bridged into a 4-ohm load
as they do running a 2-ohm
stereo load.
+
+
w2
where w is the nominal
impedance of the woofer.
Figure 2. Series connection
2. The total system impedance
of voice coils (or woofers) in
1. Do not mix different subwoofers
or enclosure types in the same
system. Subwoofers being used in
the same enclosure or powered
from the same amplifier should
be identical models. Mismatched
woofers and enclosures can
result in poor performance from
your subwoofer system.
series can be calculated using
the formula:
Impedance = w1 + w2 + w3 ...
The diagrams at right show parallel
and series speaker connections.
NOTE: The GTO1002D, GTO1202D
and GTO1502D come with one
jumper installed for a series
configuration.
NOTE: There are two jumpers
supplied with the woofers to make
connections easier.
3
SPECIFICATIONS
GTO804
GTO1002D
10" Dual 2-Ohm
Subwoofer
GTO1004D
10" Dual 4-Ohm
Subwoofer
GTO1202D
12" Dual 2-Ohm
Subwoofer
GTO1204D
12" Dual 4-Ohm
Subwoofer
GTO1502D
15" Dual 2-Ohm
Subwoofer
GTO1504D
15" Dual 4-Ohm
Subwoofer
8" Single 4-Ohm
Subwoofer
Power Handling, RMS
Power Handling, Peak
Sensitivity (2.83V/1m)
Frequency Response
Impedance
200W
250W
250W
300W
300W
300W
300W
800W
1000W
1000W
1200W
1200W
1200W
1200W
91dB
91dB
91dB
93dB
93dB
93dB
93dB
30Hz – 400Hz
4 Ohms
25Hz – 400Hz
4 Ohms/1 Ohm
4-9/16" (116mm)
9-3/16" (234mm)
10-3/8" (264mm)
25Hz – 400Hz
8 Ohms/2 Ohms
4-9/16" (116mm)
9-3/16" (234mm)
10-3/8" (264mm)
23Hz – 400Hz
4 Ohms/1 Ohm
5-1/16" (129mm)
23Hz – 400Hz
8 Ohms/2 Ohms
5-1/16" (129mm)
23Hz – 400Hz
4 Ohms/1 Ohm
5-5/8" (143mm)
23Hz – 400Hz
8 Ohms/2 Ohms
5-5/8" (143mm)
Mounting Depth
4-3/8" (112mm)
7-3/16" (183mm)
8-1/4" (210mm)
Cutout Diameter
11-3/16" (285mm) 11-3/16" (285mm) 13-7/16" (342mm) 13-7/16" (342mm)
12-7/16" (316mm) 12-7/16" (316mm) 15-1/16" (383mm) 15-1/16" (383mm)
Overall Diameter
A valid serial number is required for warranty coverage.
Features, specifications and appearance are subject to change without notice.
These products are designed for mobile applications and are not intended for connection to the mains.
Declaration of Conformity
Harman Consumer Group, Inc.
250 Crossways Park Drive, Woodbury, NY 11797 USA
We, Harman Consumer Group International
2, route de Tours
72500 Château du Loir
France
declare in own responsibility that the products described in this owner’s
manual are in compliance with technical standards:
© 2006 Harman International Industries, Incorporated. All rights reserved.
JBL and Grand Touring are trademarks of Harman International Industries,
Incorporated, registered in the United States and/or other countries.
EN 61000-6-3:2001
EN 61000-6-1:2001
Klaus Lebherz
Harman Consumer Group International
Château du Loir, France 10/06
Part No. GTOSUBOM10/06
www.jbl.com
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