JBL GTS 100X User Manual / Operation Manual ▷ View online
G R A N D T O U R I N G S E R I E S
2 /1 C h a n n e l
A u t o m o t i v e P o w e r A m p l i f i e r
G T S 1 0 0 x O w n e r ’ s M a n u a l
G E N U I N E J B L
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02
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
About Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
System Design Using the GTS100x . . . . . . . . . . . . . . . . . . . . .
6
Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
Signal Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
Other Components . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
Installation and Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 10
Physical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Controls and Connectors . . . . . . . . . . . . . . . . . . . . . . . . 12
Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power Supply Connections . . . . . . . . . . . . . . . . . . . . 15
+
12V Battery Wire . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Ground Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Remote Turn-On Wire . . . . . . . . . . . . . . . . . . . . . . . 16
Audio Input Connections . . . . . . . . . . . . . . . . . . . . . . . . 17
Line-Level Input Connection . . . . . . . . . . . . . . . . . . 17
Input-Mode Switch . . . . . . . . . . . . . . . . . . . . . . . . . 17
Speaker-Level Input Connections . . . . . . . . . . . . . . . 18
Simultaneous Speaker-Level and Line-Level Inputs . 19
Speaker Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Gain Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Other Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Solving Noise Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Additional System Configurations for Add-On or Upgrade . . . 30
In Case of Difficulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Warranty Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Owner’s Warranty Information
Model Number
Serial Number
Dealer Name
City, State, Zip
Sales Receipt Number
Date of Purchase
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03
Thanks
for purchasing your new
GT series automotive amplifier.
The GT series amplifier you have
chosen includes many unique
features to enhance its perfor-
mance and utility. The power
amplifier circuitry is a fully dis-
crete design notable for low
distortion and unusually clean
and clear reproduction quality.
Your GT series amplifier will
easily connect to virtually any
car audio system, whether it is
factory installed or purchased
separately.
In addition to conventional pre-
amp-level inputs, this model fea-
tures JBL’s Universal Interface
design, which facilitates simple
connection to factory radios with
the low distortion that is usually
only associated with preamp-
level connection. With Universal
Interface, a factory radio can be
used either as the main music
source or combined with a CD
changer which includes volume
control capability, simulta-
neously connected directly to
the amplifier.
By providing this two-unit direct
connection, Universal Interface
circuitry eliminates the need for
an FM modulator to connect a
CD player to factory radios,
improving the fidelity of digital
playback.
Also, when using a high-powered
(BTL) radio through the
speaker-level inputs, Common
Sense turn-on circuitry senses
the common-mode voltage pre-
sent on the radio’s speaker wires
and turns the amplifier on with-
out an additional “remote” wire.
When the speaker-level inputs
are used exclusively, the
preamp-level inputs may be
converted to preamp-level
outputs to drive additional
amplifiers or signal processors.
In addition, the built-in active
crossover provides either high-
pass or low-pass operation. This
lets your GT series amplifier
power either subwoofer or main
speakers in a bi-amplified
system, without the expense of
an additional crossover.
Introduction
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04
• Gold-Plated RCA Input
Connectors
• Preamp Output Capability
• Convenient Easy-Disconnect
Power and Speaker Connections
• Third Order (18dB per Octave),
Capacitive/Inductive Power-
Supply Filtering
• Input Mode Switching
• Made in USA
About Installation
Although the GTS100x was
designed to make installation as
easy as possible, it is a sophisti-
cated product that requires
proper installation to realize its
full performance potential. Skill
with tools, an understanding of
basic electronics, and experience
with car stereo installation are
needed to properly install this
amplifier. If you feel you do not
have the necessary knowledge
and skills, we strongly recom-
mend that the installation be
done by your authorized JBL
dealer. If the GTS100x is
installed by a qualified JBL
dealer, we will double the length
of your warranty to two years
from date of purchase.
If you choose to install the
GTS100x yourself, read all of
the information in this manual
before you start the installation.
Pay particular attention to the
safety precautions and notes.
It will save potential problems
later if you take a few minutes
to plan the complete installation
before you start. The routing of
wires, the power supply connec-
tion points, and the mechanical
installation of the unit should be
completely thought out before
you begin. Work carefully and
check each step as it is per-
formed. Before operating the
amplifier, recheck the entire
installation to be sure that each
connection is correct, properly
insulated and secure.
Features
• Bridgeable 2/1 Channel
Operation
• Simultaneous Stereo
+
Mono
Operation
• Built-in Staggered 18dB/Octave
100Hz High-Pass and 80Hz Low-
Pass Crossover
• No Current Limiting
• Oversized Floating Rail
MOSFET Switch-Mode
Power Supply
• Common Sense 2-Way Turn-On
• Stealth Remote Silent Turn-On
Circuitry with Power-On
Indicator
• Continuously Adjustable
Gain Controls
• Capable of Single-Ended
Operation Into 2-Ohm Loads
• Fully Complementary, Direct-
Coupled, Discrete Power
Amplifier Circuitry
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