GTO 601.1 (serv.man13) — JBL Car Audio Service Manual (repair manual)

Model
GTO 601.1 (serv.man13)
Pages
28
Size
3.68 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
gto-6011-sm13.pdf
Date

View JBL GTO 601.1 (serv.man13) Service Manual online

       
GTO Series 
601.1 
1 CHANNEL POWER AMPLIFIER 
 
SERVICE MANUAL
 
 
 
 
 
 
JBL Consumer Products 
250 Crossways Park Dr. 
Woodbury, New York   11797    Rev0 
 
4/2004 
-  CONTENTS  - 
 
SPECIFICATIONS ………………………………….……..1 
FEATURES/TEST CONDITIONS……..…………………2 
INSTALLATION………………….……...……..…...…...…3 
CONNECTIONS………………….……...……..…...…..…4 
SET-UP/CONTROLS ……..………………..…….….…...5 
INSTALLING NEON TUBES..…….…….………………..5 
BASIC TROUBLESHOOTING..…….…….………………6 
TYPICAL SYSTEM WIRING..…….…….……………..…7 
EXPLODED VIEW/PARTS LIST…….….….…………....8 
MECHANICAL PARTS LIST..…….…….……………......9 
AMPLIFIER BLOCK DIAGRAM…………………….……10  
P.C.B. DRAWINGS….……………………………….…….11 
ELECTRICAL PARTS LIST ..……….……….…….….…14 
IC/TRANSISTOR PINOUTS..……..….…….….….….…..18 
SCHEMATICS………..……………………….…………...24 
PACKING……..…………………………………………....27 
 
GTO 601.1 Specifications 
 
Output Power:  
 
424W RMS x 1 channels @ 4 ohms; ≤1% THD + N 
(14.4V supply)  
580W RMS x 1 channels @ 2 ohms; ≤1% THD + N 
Signal-to-noise ratio:   
72dBA (reference 1W into 4 ohms) 
Dynamic power:  
 
778W @ 2 ohms 
Effective damping factor:  
6.32 @ 4 ohms 
Frequency response:   
10Hz – 302Hz (–3dB) 
Maximum input signal:  
5.3V 
Maximum sensitivity:   
210mV 
DC 
Offset 
  <50mV 
(-50%) 
Output regulation:  
 
.21dB @ 4 ohms 
Idle 
Current 
  1.3A 
Input Impedance 
 
22kΩ 
Max Current Draw 
 
39A @ 4 ohms 
    67A 
ohms 
 
Dimensions:  
 
15 1/8 x 12 5/16 x 2 3/8”
 (L x W x D) 
    (384mm 
313mm 
60mm) 
Fuses: 
   30A 
 
JBL continually strives to update and improve existing products, as well as create new ones. The specifications and details in 
this and related JBL publications are therefore subject to change without notice. 
1
2
INSTALLATION 
2
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 Grand Touring
®
Series amplifiers, 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.
• 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 cut-
ting 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.
• 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’s fuse 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.
POWER CONNECTIONS
The GTO amplifiers are capable of 
delivering extremely high power levels,
and require a heavy-duty and reliable 
connection to the vehicle’s electrical system
in order to perform optimally. See Figure 1
for connection location. 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 chart below to 
determine minimum wire-gauge size. Scrape
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 18" 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 18-gauge wire.
NOTE: When using the speaker level
inputs, connect the remote (REM) terminal
to the source unit. 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 
16-gauge wire.
High-Level Input Connections
The GTO75.2, GTO75.4 and GTO755.6 
amplifiers are equipped with speaker-level
inputs that allow you to add an amplifier 
to head units that do not have RCA line
outputs. The speaker outputs for the
source unit should be connected to the
amplifier using the supplied connector
(square four-wire plug). Remember to
check for proper polarity. The GTO301.1,
GTO601.1 and GTO1201.1 amplifiers are 
not equipped with high-level inputs.
NOTE: When using the high-level inputs,
the AUX outputs can be used to pass a
line-level signal to another amplifier.
Wire Gauge Chart
Amplifier
Maximum
Minimum 
Model
Current Draw
Wire Gauge
GTO75.2
34A #8 
AWG
GTO75.4
85A #8 
AWG
GTO755.6
87A #8 
AWG
GTO301.1
40A #8 
AWG
GTO601.1
69A #6 
AWG
GTO1201.1
115A #4 
AWG
These recommendations assume 7' – 10'
wire runs. If your installation differs mark-
edly, you will need to adjust the wire
gauge accordingly.
IMPORTANT NOTE: If you are planning 
to use optional neon tubes, install them
before making any electrical connections
to the amplifier (refer to“Installing Neon
Tubes” on page 6).
Figure 1. Terminal connection end plate.
GTO Amp OM  2/3/04  3:54 PM  Page 2
3
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Download JBL GTO 601.1 (serv.man13) Service Manual (Repair Manual)

Here you can view online or download JBL GTO 601.1 (serv.man13) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair JBL GTO 601.1 (serv.man13) Car Audio. Information contained in JBL GTO 601.1 (serv.man13) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).