GTO SERIES
Multi-Element Speakers Owner’s Manual
GTO325 GTO425 GTO525 GTO625 GTO635 GTO6425 GTO7525 GTO925 GTO935
02
Installation Warnings and Tips
JBL GTO Series Multi-Element Speakers
About These Instructions
Installation of automotive stereo components can require extensive experience with a variety of mechanical and electrical procedures. Although these instructions explain how to install
GTO Series multi-element speakers in a general sense, they do not show the exact installation methods for your particular vehicle. If you feel you do not have the experience, do not attempt the installation yourself, but instead ask your authorized JBL car audio dealer about professional installation options.
Loud Music and Hearing
Playing loud music in an automobile can permanently damage your hearing, as well as hinder your ability to hear traffic. The maximum volume levels achievable with JBL speakers, combined with high power amplification, may exceed safe levels for extended listening. We recommend using low volume levels when driving.
JBL accepts no liability for hearing loss, bodily injury, or property damage as a result of use or misuse of this product.
Rear Deck Precaution
In some cars, fuel tanks may be located directly beneath the rear deck. Before installation, make sure there is adequate speaker-basket clearance before considering this location!
About the Crossover
Each GTO Series multi-element speaker includes a built-in crossover network and requires no additional external circuits for proper operation.
To insure correct polarity connections, each speaker is also equipped with keyed terminals (see Figure 4 on page 3).
General Care
The loudspeaker grilles may be cleaned with a damp cloth. Do not use any cleaners or solvents on the grilles or the speaker cones.
Installation Tips
• Always wear protective eyewear when using any tools.
• Turn off all audio components and other electrical devices before you start. Disconnect the negative (–) lead from your vehicle’s battery.
• Keep speakers in their package until final installation. When moving a speaker, always rest it with the cone or dome facing up. Never use force to install any speaker.
• Check clearances on both sides of a planned mounting surface before drilling any holes or installing any screws. Remember that the screws can extend behind the surface.
• 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 cutting or drilling in and around these areas.
• Before drilling or cutting holes, use a utility knife to remove unwanted fabric or vinyl to keep material from snagging in a drill bit or saw.
• For door installations, check the clearance with the windows throughout the range of the window’s travel, and verify that a mounted speaker will not interfere with the window crank or powerwindow mechanism.
• If mounting speakers elsewhere, check for clearance around reardeck torsion bars, glove box or other structural elements.
• Do not mount speakers where they will get wet.
Installation and Connections
JBL GTO Series Multi-Element Speakers
Figure 1. Mounting the GTO325, GTO425 or GTO525. Although not shown below, the
GTO625, GTO635, GTO925 and GTO935 all mount in a similar way.
Figure 2. Modifying the GTO325 or GTO425 for installation in locations requiring fewer than four mounting “ears”.
NOTE: Bend tab back and forth to detach it from the speaker.
Figure 3. Mounting the GTO6425 or, not shown, the GTO7525.
Figure 4. The GTO’s keyed terminals aid in making correct polarity connections.
Large Lug =
Small Lug =
ROTATE AND AIM TWEETER
SO IT FACES THE LISTENER
USING THE OMNIPIVOT™
FEATURE ON THE GTO525,
GTO625, GTO6525, GTO7525
AND GTO925.
Declaration of Conformity
We, Harman Consumer 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 50081-1:1992
EN 50082-1:1992
Lutz Uphoff
Harman Consumer International
Chateau-du-Loir, France. 3/01
03
Specifications
JBL GTO Series Multi-Element Speakers
Type
Speaker Impedance
Power Handling
Sensitivity (2.83V, 1m)
Frequency Response
Mounting Depth
Cut-out Diameter
GTO325
3-1⁄ 2" 2-way
4 ohms
GTO425
4" 2-way
4 ohms
25W RMS, 75W peak 35W RMS, 100W peak
92dB 92dB
90Hz – 21kHz
1-3 ⁄ 8" (35mm)
3-1⁄4" (83mm)
90Hz – 21kHz
2-1⁄ 8" (54mm)
3- 9 ⁄16" (91mm)
GTO525
5-1⁄ 4" 2-way
4 ohms
45W RMS, 135W peak
92dB
70Hz – 21kHz
2-3 ⁄ 16" (56mm)
4-5 ⁄ 8" (118mm)
GTO625
6-1⁄ 2" 2-way
4 ohms
60W RMS, 180W peak
92dB
55Hz – 21kHz
2-1⁄ 16" (53mm)
5-1⁄ 16" (129mm)
Type
Speaker Impedance
Power Handling
Sensitivity (2.83V, 1m)
Frequency Response
Mounting Depth
Cut-out Diameter
GTO635
6-1⁄ 2" 3-way
4 ohms
60W RMS, 180W peak
GTO6425
4" x 6" 2-way
4 ohms
40W RMS, 120W peak
GTO7525
5" x 7" 2-way
4 ohms
60W RMS, 180W peak
GTO925
6" x 9" 2-way
4 ohms
100W RMS, 300W peak
92dB 91dB
55Hz – 21kHz 75Hz – 21kHz
2-1⁄ 16" (53mm)
5-1⁄ 16" (129mm)
1-5 ⁄ 8" (42mm)
92dB
50Hz – 21kHz
2-3 ⁄ 16" (56mm)
92dB
50Hz – 21kHz
2-7⁄ 8" (74mm)
5-11⁄ 16" x 3-1⁄ 4" (145mm x 83mm) 7-3 ⁄ 16" x 5" (183mm x 127mm) 8-3⁄4" x 5-15⁄16" (223mm x 151mm)
04
Type
Speaker Impedance
Power Handling:
Sensitivity (2.83 V, 1m)
Frequency Response
Mounting Depth
Cut-out Diameter
GTO935
6" x 9" 3-way
4 ohms
100W RMS, 300W peak
92dB
50Hz – 21kHz
2-7⁄ 8" (74mm)
8-3⁄4" x 5-15⁄16" (223mm x 151mm)
JBL Consumer Products • 250 Crossways Park Drive, Woodbury, NY 11797 USA
1-800-336-4JBL (4525) www.jbl.com
©2001 JBL, Incorporated • JBL is a registered trademark of JBL, Incorporated
Made in USA Printed in USA 3/01 Part No. GTOMULTIOM3/01
