DOWNLOAD JBL A601GTi Service Manual ↓ Size: 1009.09 KB | Pages: 8 in PDF or view online for FREE

Model
A601GTi
Pages
8
Size
1009.09 KB
Type
PDF
Document
User Manual / Operation Manual
Brand
Device
Car Audio
File
a601gti.pdf
Date

JBL A601GTi User Manual / Operation Manual ▷ View online

PRO POWER
TM
Automotive Amplifier Owner’s Manual A302GTi
A601GTi A1201GTi
Thank you for purchasing a JBL 
GTi Series amplifier. In order that 
we may better serve you, should you
require warranty service on your new
amplifier, please retain your original
purchase receipt and return the
enclosed warranty registration card.
Warning: Playing loud music in 
an automobile can hinder your 
ability to hear traffic as well as 
permanently damage your hearing. 
We recommend listening at low 
levels while driving. JBL accepts no
liability for hearing loss, bodily injury 
or property damage resulting from 
use or misuse of this product. 
Important: Installation of 
automotive stereo components 
can require extensive experience in 
performing a variety of mechanical
and electrical procedures. Although
these instructions explain how to
install GTi Series amplifiers in a 
general sense, they may not show 
the exact installation methods for 
your particular vehicle. If you feel 
you lack the tools or experience 
necessary, ask your authorized JBL
car audio dealer about professional
installation options.
Installation Warnings and Tips  
• Always wear protective eyewear
when using tools.
• Turn off all audio systems 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 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.
• When routing cables, keep input 
signal cables away from power 
cables and speaker wires. 
• When making connections, ensure 
that they are secure and properly 
insulated.
• If the amplifier’s fuse must be 
replaced, use only the same type 
and rating as a replacement. Do 
not substitute another kind.
Choosing a Location and 
Mounting the Amplifier  
Amplifiers need air to stay cool.
Suitable mounting locations are 
under seats (provided the amplifier
doesn’t interfere with the seat 
adjustment mechanism), in the trunk
or in any other location that provides
enough air for the amp to cool itself.
Do not mount the amplifier with the
heatsink facing downward, as this
makes convection cooling of the
amplifier impossible.
Mount the amplifier so that it is not
damaged by the feet of back-seat
passengers or by the shifting of cargo
in the trunk. Mount the amplifier so
that it remains dry – never mount an
amplifier outside the car or in the
engine compartment. 
Using the amplifier as a template,
mark the location of the mounting
holes on the mounting surface, drill
pilot holes, and attach the amplifier 
to the mounting surface using 
screws. Make sure the amplifier 
is mounted securely.
02
The Official Brand of Live Music
SPEAKER OUTPUTS
+BATT REM
POWER
GND
+
CAPTAP
FUSES 40A x 3
A1201GTi
R
L
INPUT
LEVEL
4V 55mV
REMOTE
LPF
FREQ
30Hz   320Hz
BASS
BOOST
0dB  +6dB
HEAD
UNIT
STATUS
MONITOR
REM
(GRN)
+BATT
(RED)
GND
(BLK)
CAR BODY
(GROUND)
CAR
BATTERY
+
CAR BODY
(GROUND)
+
EXTERNAL
CAPACITOR
(OPTIONAL)
SUBWOOFER
FUSE/CIRCUIT 
BREAKER
FUSE/CIRCUIT BREAKER 
AND WIRE SIZE MUST BE
APPROPRIATELY SIZED FOR 
THE ELECTRICAL LOAD OF 
THE SYSTEM. INSTALLATION 
SHOULD BE WITHIN 18 INCHES 
OF THE BATTERY + TERMINAL.       
SUB LEVEL 
CONTROL
SUB LEVEL
MIN
MAX
LEFT SIDE
OF
AMPLIFIER
R
L
FRONT INPUTS
REAR INPUTS
RIGHT SIDE
OF
AMPLIFIER
SUBWOOFER
Figure1. Connecting the A1201GTi and A601GTi
Figure 2. Connecting the A302GTi
03
PRO POWER
TM
BRIDGED
SPEAKER OUTPUTS
+BATT REM
POWER
GND
+
CAPTAP
FUSES 20A x 3
A302GTi
R
L
INPUT
LEVEL
4V 250mV REMOTE
HPF
40Hz   400Hz
LPF
40Hz   400Hz
X-OVER FREQUENCY
HPF  FLAT  LPF
ST   BR
ST  BR
HEAD 
UNIT
REM
(GRN)
+BATT
(RED)
GND
(BLK)
CAR
BATTERY
+
CAR BODY
(GROUND)
+
BRIDGED
SPEAKER OUTPUTS
+BATT REM
POWER
GND
+
CAPTAP
FUSES 20A x 3
EXTERNAL
CAPACITOR
(OPTIONAL)
SUBWOOFER
FULL-RANGE
SPEAKER
ST  BR
SPEAKER OUTPUTS
+BATT REM
POWER
GND
+
CAPTAP
FUSES 20A x 3
BRIDGED
ST  BR
FULL-RANGE
SPEAKER
SUBWOOFER
C1
C2
L1
FUSE/CIRCUIT 
BREAKER
FUSE/CIRCUIT BREAKER AND WIRE SIZE MUST BE
APPROPRIATELY SIZED FOR THE ELECTRICAL LOAD
OF THE SYSTEM. INSTALLATION SHOULD BE WITHIN
18 INCHES OF THE BATTERY + TERMINAL.       
FULL-RANGE
SPEAKER
CAR BODY
(GROUND)
STATUS
MONITOR
Wiring the Power Connections
Refer to Figures 1 and 2 for connector
locations. All the GTi Series amplifiers
will accept up to 4-gauge power and
ground wire. To determine the mini-
mum acceptable power and ground
wire gauge, consult the chart below.
*Length of wire to be used.
For Power, Remote and Ground 
connections, strip off one end of each 
jacket to reveal bare wire for insertion
into the connectors. Connect a wire
from the GND connector on the 
amplifier to the nearest bare-metal
chassis component – you should
scrape away the paint to ensure 
good conductivity. Next, connect a 
wire between the BATT terminal on
the amplifier and the POS (+) terminal 
of the vehicle’s battery. Pass the wire
through a factory-installed grommet in
the firewall, or install a grommet if a
factory grommet is not available. You
must install an in-line fuseholder and a
fuse within 18 inches of the vehicle’s
battery. The fuse you install must have
at least the same amperage rating as
the sum of the amperage ratings of
the fuses in the amp’s chassis. This
will protect the vehicle in case of a
short circuit. Connect a wire between
the REM terminal of the amplifier 
and the “remote out” lead on the 
vehicle’s radio. If your radio does not
provide a “remote out” lead, the REM
terminal may be connected to the
radio’s ignition lead.
Length*
A302GTi A601GTi A1201GTi
4 Ft.
8-Gauge
8-Gauge
8-Gauge
4–7 Ft.
8-Gauge
8-Gauge
8-Gauge
7–10 Ft.
8-Gauge
8-Gauge
8-Gauge
13–16 Ft.
4-Gauge
8-Gauge
4-Gauge
16–19 Ft.
4-Gauge
4-Gauge
4-Gauge
Connecting an Optional 
Stiffening Capacitor
You may connect an optional 
outboard stiffening capacitor (sold 
as an accessory at many car audio
dealers) to your GTi Series amplifier.
For best performance, mount the
capacitor as close to the amp as 
possible, using the shortest wires 
possible to connect the capacitor 
to the CapTap™ connections on the
amplifier. Choose the wire gauge
according to the chart on page 3.
Make sure to connect the capacitor
observing proper polarity. Failure to
observe proper polarity may cause
damage to the capacitor and/or the
amplifier. Use at least a 1-Farad
capacitor, or a combination of 
smaller capacitors, connected in 
parallel, that have a total capacitance
equal to or greater than 1 Farad, 
for an A1201GTi and A302GTi. 
Use at least a 500uF capacitor or 
combination of capacitors in parallel
for the A601GTi. Use the following
formula to determine the total 
capacitance of several capacitors
connected in parallel:
Ct = C1 + C2 + C3…
Where Ct is total capacitance and 
C1, C2 and C3 are the capacitance
values of the individual capacitors
connected in parallel.
Note: If you must use several 
smaller caps in parallel, use caps 
of equal value.
Wiring the Speaker Output
Connections
All the GTi Series amplifiers will
accept up to 8-gauge speaker wire.
A302GTi
Connect the speakers observing
proper polarity to the speaker 
output connector. The total nominal
impedance of the speaker system
connected to the amplifier when the
amplifier is driven in stereo must be 
at least 2 ohms. 
If you are bridging the amplifier, 
connect the speaker wires to the 
terminals marked “bridged”, observing
proper polarity. The total nominal
impedance of the speaker system
connected to the amplifier must 
be at least 4 ohms in bridged mode.
If you are running the amp in 
Tri-Mode (stereo and mono 
simultaneously): Connect the satellite
speakers to the speaker connector 
as you would a pair of stereo 
speakers. Connect the subwoofer 
to the terminals marked “bridged”.
Refer to the chart below to determine
the capacitor and inductor values
you’ll need to route bass signals to
the woofer, and midrange and high
frequencies to the satellite speakers.
These passive crossover components
will also ensure that the impedance 
of the speaker system doesn’t drop
below 2 ohms.
A1201GTi, A601GTi
Connect the woofers to the amplifier
observing proper polarity. Although
these amplifiers have a single chan-
nel, duplicate positive and negative
connectors are provided to facilitate
the connection of multiple woofers.
You may use either + terminal and
either – terminal on the amplifier.
Wiring the Input Signal 
Connections
Connect a pair of signal cables with
RCA-type connectors between the
RCA-type input connectors on the
amplifier and the RCA-type output
connectors on the source unit.
The A1201GTi and A601GTi have
been designed to provide constant
bass regardless of the position of the
source unit’s front to rear fader. Use
of this feature requires that all four
inputs are connected to the source
unit as labeled on the amplifier: front,
rear, right and left. If nonfading 
bass is not important in your system, 
connect a pair of inputs to either 
the front or rear input connectors 
on the amplifier.
Installing the Remote Level 
Control (A1201GTi and A601GTi
only) and Status Monitor  
Choose a suitable location for the 
status monitor. There must be at 
least 2" clearance behind the 
mounting surface. Cut a rectangular
hole 3-1/4" by 1-5/8". Connect the
red wire to a constant 12V+ source,
the black wire to ground and the
green wire to the remote turn-on 
wire from the head unit. Connect 
the RJ45 cable between the amplifier
and the status monitor. Connect the
RJ11 cable between the status 
monitor and the remote level control.
Turn the screws located on the front
panel clockwise to engage the 
mounting tabs and continue turning
the screws clockwise to tighten the
status monitor in its location. See 
Figure 3 below.
Figure 3. Mounting the status monitor
FREQUENCY
INDUCTOR CAPACITOR
Crossover 
6dB/oct. LP 6dB/oct. HP
(4-ohm)
(4-ohm)
75Hz
8.0mH
530µF
100Hz
6.4mH
400µF
125Hz
5.0mH
318µF
150Hz
4.2mH
265µF
175Hz
3.6mH
227µF
200Hz
3.2mH
198µF
3.25 in.
PO
WE
R
MO
DE
1.6 in.
0.5 in. m
ax
thickness
TO REMOTE
LEVEL CONTROL
TO AMPLIFIER
REMOTE
ON
(GRN)
GND
(BLK)
BATT+
(RED)
04
The Official Brand of Live Music
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  • DOWNLOAD JBL A601GTi Service Manual ↓ Size: 1009.09 KB | Pages: 8 in PDF or view online for FREE
  • Here you can View online or download the User Manual / Operation Manual for the JBL A601GTi in PDF for free, which will help you to disassemble, recover, fix and repair JBL A601GTi Car Audio. Information contained in JBL A601GTi User Manual / Operation Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.