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5

MAKING THE CONNECTIONS

POWER CONNECTIONS

Use 0-gauge cable to connect the
amplifier’s GND – terminal directly to
the vehicle’s chassis (see Figure 5).
Scrape off all paint from the metal area
for a good, clean ground connection.
Make sure the ground wire is as short
as possible and is connected to metal
on the vehicle’s body. Do not connect
the GND – cable to the frame of the
vehicle. It is isolated from the chassis
using rubber shims and will not provide
an adequate ground. Instead, use the
trunk’s floor or cargo area as a suitable
location. Do not connect the GND –
cable to the battery’s negative (–) 
terminal.

Figure 5.

Power wiring 

diagram for the JBL A6000GTi 
amplifier. The A3000GTi is 
wired in a similar way.

Use 0-gauge cable to connect the
BATT+ terminal directly to the vehicle’s
battery. If the battery is located in the
engine compartment and the BATT+
cable must be routed through the 
firewall or any metal obstruction,
install a wafer-type (ANN) fuse with a
current rating of at least 500 amperes
and an appropriate fuse holder 
within 18" of the vehicle’s battery 
(see Figure 5).

Connect the source unit’s remote 
turn-on lead to the REMOTE terminal
on the amplifier (see Figure 5). Use 
any convenient gauge wire for the 
connection.

The amplifier’s internal neon lights
require a separate switched power 
connection with at least a 2-ampere
current capacity. If desired, install a
switch to turn on the neon lights or a
relay triggered by a circuit in the vehicle
(e.g., door switch, trunk pin switch or
other turn-on source). If you want the
amplifier’s neon to light when the 
amplifier is on, connect the LIGHTING
terminal to a relay triggered by the radio’s
remote turn-on lead (see Figure 5).

IMPORTANT: Do not connect a jumper
directly between the REMOTE and
LIGHTING terminals. Doing so may
burn out the remote turn-on circuits 
in your source unit.

SIGNAL CONNECTIONS

Use high-quality twisted-pair RCA
audio cables to connect your source
unit’s main stereo or subwoofer RCA
output jacks to the amplifier’s L/R
INPUT jacks. For a single subwoofer
output, use an RCA “Y” adapter to 
connect its signal to both input jacks.

As a convenience, each JBL A6000GTi
or A3000GTi amplifier is also equipped
with a set of PASS-THRU L/R RCA
audio jacks. They will pass incoming
audio signals unaltered, and you can
use them to send stereo audio signals
to other components in your system.

REMOTE LEVEL
CONTROL/ACCESSORY
GAUGE OUTPUTS

The A6000GTi and A3000GTi use an
RJ45 connector to output control 
signals for the Remote Level Control
and accessory gauges. Use the 15'
RJ11 cable to connect the control to
the amplifier. For accessory gauges,
use the pinouts in Figure 6 to make
custom cables with materials found 
at most electronics supply stores or
home centers.

For gauges, varying voltages are output
on selected RJ45 pins to indicate 
voltage, current and temperature.

For battery voltage, linear scale (pin 1):

2 volts = 8 volts at the battery
4.5 volts = 18 volts at the battery

For temperature, linear scale (pin 2):

0 volts = –10 degrees Celsius
5 volts = 110 degrees Celsius

For current, linear scale (pin 3):

0 volts = 0 amperes current draw
5 volts = 800 amperes current draw

Also, you can connect a power meter
using the pins for battery voltage and
current. Be sure to use a power meter
that multiplies the incoming voltage
and current signals (i.e., P = E x I) to
convert the data to watts.

CONNECTING 
THE SPEAKERS

IMPORTANT: As a safety feature 
and due to the high output voltage
capability of the A6000GTi and
A3000GTi amplifiers, the SPEAKER
OUTPUTS are equipped with a cover
that must be in place in order for the
amplifier to operate. When the cover 
is removed, the amplifier will turn off
and speaker connections can be 
made safely. 

SPDT Relay

(or other

turn-on

signal)

A6000GTi

Power Terminals

+12 V

Ground

87

87a

85

nc

no

86

30

Chassis

Ground

(Bare Metal)

0-gauge

0-gauge

Remote Turn-On

Batteries

 ANN-Type Fuse

(500 A or more)

Source Unit

18"

Ground (also use for acc. gauges) = 8

8

1

No Connection = 7

Remote Level Control = 6
Remote Level Control = 5

4 = Remote Level Control

3 = Current (to acc. ampere meter)

2 = Temperature (to acc. temp. gauge)

1 = Battery Voltage (to acc. volt meter)

RJ45 Connector

(GTi Input Panel)

Figure 6.

Pinouts for the REMOTE LEVEL RJ45 connector on the

A6000GTi or A3000GTi amplifier.

Содержание A6000GTi

Страница 1: ...r A3000GTi amplifier For warranty support please register your purchase at www jbl com Select Car Audio then click on Support and then click on Product Registration Also please retain your original pu...

Страница 2: ...he JBL A6000GTi and A3000GTi amplifiers are big Conventional mounting locations under driver or passenger seats will not accommodate either amplifier Mount the amplifier in the vehicle s trunk or carg...

Страница 3: ...ce of 12 ohms for each subwoofer and an equivalent parallel impedance of 4 ohms for all three subwoofers To determine the impedance of a system of three W15GTi dual voice coil subwoofers connected in...

Страница 4: ...mand doesn t last very long but it is repeated over and over If your charging system can t provide all the power your amplifier needs on a continuous basis it still may be adequate During the sound of...

Страница 5: ...single subwoofer output use an RCA Y adapter to connect its signal to both input jacks As a convenience each JBL A6000GTi or A3000GTi amplifier is also equipped with a set of PASS THRU L R RCA audio j...

Страница 6: ...to the appropriate setting when changing configurations NOTE For simplicity Figures 7 through 9 do not show power remote and input connections see page 5 A6000GTi Amplifier partial output panel Subwo...

Страница 7: ...t Mode to STEREO on input panel See Setting The Crossover on Page 8 to Adjust Crossover Controls A3000GTi Amplifier partial output panel Set Output Mode to PARALLEL on input panel Subwoofer System 2 o...

Страница 8: ...tting the I OPT LED should flash on musical peaks to indicate that the amplifier is producing maximum current If either the I OPT or E OPT LED is on steadily the amplifier is being overdriven and your...

Страница 9: ...face turn the amplifier over to view the bottom Using a T 25 screwdriver remove the four large Torx head screws along the bottom edges and set them aside see Figure 14 2 Turn the amplifier over to vie...

Страница 10: ...7 16 inch hex socket driver to remove the two fuse nuts and then discard the failed fuse Fasten the replacement fuse in place using the two fuse nuts To replace a neon tube see Figure 17 use a T 15 sc...

Страница 11: ...on Distorted audio Amplifier s gain is Properly adjust the I OPT and or set to High LEVEL control see E OPT LED s Setting Input are on more Sensitivity section than off Distorted audio Defective sour...

Страница 12: ...11797 USA 2004 Harman International Industries Incorporated JBL and Crown are registered trademarks of Harman International Industries Incorporated Part No GTIAMPOM4 04 Features specifications and ap...

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