Read JBL GTO-1001EZ Service Manual online
Service Manual
GTO-1001EZ
subwoofer amplifier
- CONTENTS -
SPECIFICATIONS ………………………………………..2
CONNECTIONS……………………………………………3
BASIC TROUBLESHOOTING… ………………..……....6
PACKAGING EXPLODED VIEW ……………................7
EXPLODED VIEW …..………....…….….….………….....8
ELECTRICAL PARTS LIST……………………………....9
PCB DRAWINGS…………….……….……….…….……20
BLOCK DIAGRAM…………………………....….....……23
SCHEMATIC………..….…….……………….…...….…..24
SPECIFICATIONS
GTO-1001EZ
Number of Channels:
1
Power Output (CEA 2006A):
650W RMS x 1 channel at 4 ohms, 14.4V DC, <1.0% THD
1000W RMS x 1 channel at 2 ohms, 14.4V DC, <1.0% THD
1000W RMS x 1 channel at 2 ohms, 14.4V DC, <1.0% THD
Max Power:
1450W x 1 channel at 2 ohms (50Hz), 15.5V DC, 10% THD
Frequency Response:
10Hz – 280Hz (±3dB)
Signal-to-Noise (@ 1W):
> 80dB
Maximum Current Draw:
95A
Fuse Replacement:
40A x 3
Dimensions (D x H x W):
14-11/16" x 2-9/16" x 9-11/16" (373mm x 66mm x 246mm)
Weight:
10.8 lb (4.9kg)
2
GTO-1001EZ
CONNECTING THE POWER AND GROUND
The GTO subwoofer amplifiers are capable of delivering extremely high power levels, and require a heavy-duty and
reliable connection to the vehicle’s electrical system to achieve optimal performance. Please adhere to the following
instructions carefully.
reliable connection to the vehicle’s electrical system to achieve optimal performance. Please adhere to the following
instructions carefully.
Using the Connectors
GTO subwoofer amplifiers use the same type of screw terminals for power and speaker connections. This type of
terminal is easy to use, provides superior current transfer and allows the easy connection of large-gauge wire.
terminal is easy to use, provides superior current transfer and allows the easy connection of large-gauge wire.
To use the connectors, use a Phillips screwdriver to loosen the connector’s set screw, insert the bare wire and tighten
the set screw to secure the wire in the connector.
the set screw to secure the wire in the connector.
Loosen
Screw
Insert
Wire
Tighten
Screw
Ground Connection
Connect a wire (minimum 6AWG – 13.2mm
2
– for the GTO-1001EZ; minimum 8AWG – 8.4mm
2
– for the GTO-751EZ
and GTO 501EZ) from the amplifier’s GND terminal directly to a solid point on the vehicle’s chassis. For a good
connection, use sandpaper to clear the paint from the metal surface at this chassis location. Use a star-type lock
washer to secure the wire’s connection.
connection, use sandpaper to clear the paint from the metal surface at this chassis location. Use a star-type lock
washer to secure the wire’s connection.
-
Power
Connectors
Audio System Head Unit
Remote Turn-On (optional)
> #18 AWG (0.82mm
2
) Wire
> #6AWG (13.2mm
2
) Wire – GTO-1001EZ
> #8AWG (8.4mm
2
) Wire – GTO-751EZ/
GTO-501EZ
+12V
18"
(46cm)
> #6AWG (13.2mm
2
) Wire – GTO-1001EZ
> #8AWG (8.4mm
2
) Wire – GTO-751EZ/
GTO-501EZ
120A Fuse (GTO-1001EZ)
80A Fuse (GTO-751EZ)
50A Fuse (GTO-501EZ)
50A Fuse (GTO-501EZ)
Chassis Ground
(bare metal)
(bare metal)
3
GTO-1001EZ
Power Connection
1. Connect a wire (minimum 6AWG – 13.2mm
2
– for the GTO-1001EZ; minimum 8AWG – 8.4mm
2
–for the
GTO-751EZ and GTO-501EZ) directly to the battery’s positive (+) terminal.
2. Install a fuse holder for a 120A fuse (GTO-1001EZ), 80A fuse (GTO-751EZ) or 50A Fuse (GTO-501EZ) on this wire
within 18" (46cm) of the battery’s (+) terminal. Do not install the fuse in the holder at this time.
3. Route this wire to the amplifier’s location and connect it to the amplifier’s +12V terminal. Be sure to use
appropriate grommets whenever routing wires through the firewall or other sheet metal. IMPORTANT: Failure to
adequately protect the positive wire from potential damage may result in a vehicle fire.
adequately protect the positive wire from potential damage may result in a vehicle fire.
4. When you are finished routing and connecting this wire, install the appropriate fuse in the holder you installed near
the battery. (GTO-1001EZ = 120A fuse; GTO-751EZ = 80A fuse; GTO-501EZ = 50A fuse.)
SUBWOOFER CONNECTION
Connect the subwoofer to the amplifier’s Sub (+) and (–) terminals.
-
Subwoofer
GTO
Subwoofer Amplifier
Subwoofer Amplifier
Always connect the (+) terminal on the amplifier to the (+) terminal on the subwoofer and the (–) terminal on the
amplifier to the (–) terminal on the subwoofer.
amplifier to the (–) terminal on the subwoofer.
IMPORTANT: Make sure the (+) and (–) bare wires do not touch each other or the other terminal at both the amplifier
terminals and subwoofer terminals. Touching wires can cause a short circuit that can damage the amplifier.
terminals and subwoofer terminals. Touching wires can cause a short circuit that can damage the amplifier.
NOTE: The minimum subwoofer impedance is 2 ohms.
CONNECTIONS
IMPORTANT: Disconnect the vehicle’s negative (–) battery terminal before beginning the installation.
If you have not already done so, remove the two end caps that cover the amplifier’s connectors as explained in
Mounting the Amplifier, above. This will provide easier access to all of the amplifier’s connectors.
Mounting the Amplifier, above. This will provide easier access to all of the amplifier’s connectors.
AUTO TURN-ON SWITCH
No remote turn-on connection is necessary because GTO amplifiers include signal-sensing turn-on, which will turn
the amplifier on when it receives an audio signal at any of its input connectors. The amplifier will automatically turn off
approximately five minutes after the input signal ceases.
the amplifier on when it receives an audio signal at any of its input connectors. The amplifier will automatically turn off
approximately five minutes after the input signal ceases.
If your audio system’s source unit includes a remote turn-on wire and you would prefer to use it, the amplifier
will sense that you’ve used a remote turn-on wire and that connection will override the signal-sensing turn-on. If
necessary, you can defeat the signal-sensing turn-on circuit by moving the Auto Turn-On switch to the “Off” position.
will sense that you’ve used a remote turn-on wire and that connection will override the signal-sensing turn-on. If
necessary, you can defeat the signal-sensing turn-on circuit by moving the Auto Turn-On switch to the “Off” position.
4
GTO-1001EZ