JBL G CENTER User Manual
G SERIES
LOUDSPEAKERS
OWNER’S
MANUAL
G
CENTER
INTRODUCTION
Congratulations on choosing JBL
loudspeakers. Their highly accurate,
uncolored and balanced sound
character will greatly increase your
enjoyment of recorded films and
movies. JBL speakers are built with
careful attention to detail, using only
the highest quality materials. They will
provide many years of excellent
performance.
The G Center Channel Speaker is the
result of concentrated efforts to
combine traditional JBL performance
values with elegant contemporary
appearance. It is designed to give you
the clear, crisp, quality sound
reproduction needed to deliver
accurate, intelligible vocal information
required by a center channel speaker.
The G Center incorporates magnetic
shielding on the drivers which
prevents stray magnetic fields from
creating any interference or distortion
of the video picture. This allows
placement of the G Center directly on
top of the video monitor or TV.
Your G Center is very easy to set up,
but as it is a critical part of your
surround system, we recommend that
you take a few minutes to read this
Owner's Manual before you begin and
follow the instructions carefully.
PLACEMENT
As the center channel contains the
dialog and other central action sounds,
the speaker should be located very
close to the Monitor/TV centered with
the Monitor/TV’s center line. Place the
G Center directly on top of the
Monitor/TV with the front edge of the
speaker grille flush with the edge of
the Monitor/TV. You should also have
your Left and Right speakers within a
2 ft. or less height range of your G
Center for proper sonic performance
(see Figure 1). If for some reason you
cannot place your G Center on top of
the Monitor/TV, you may place it just
below the Monitor/TV. When used in
this position, it is recommended that
you support the G Center so the
Center
Speaker
Center
AV Receiver
Red
(–) (+)
(–) (+)
Blk
(2 ft. or less)
(2 ft. or less)
speaker is angled up to point towards
your seated ear level listening
position.
Figure 1
In Case Color Interference Occurs
The speaker is shielded to work with
video applications, however some
color interference may be observed
on the TV screen depending on the
type of your TV set. If color interference is observed, turn your TV
off for 15 minutes and move the
G Center back about 1" from the front
edge of the TV. Turn on the TV and
recheck. If this is not far enough,
move back further and experiment
until the interference disappears. You
may have to turn the TV off for a few
minutes and turn it on again to clear
the screen.
Preparing the hookup wire
1.
First determine the distance
between G Center and the AV
Receiver’s center channel output. Be
sure to consider any obstructions, i.e.
cabinets, furniture, etc.
2. Cut a length of speaker wire this
length.
3. Strip off 3/8" of insulation from both
ends of each conductor.
4. Twist each set of thin wires into a
tightly-bunched spiral.
5. At this point you need to identify a
visual difference between the two
conductors of each molded pair of
speaker wire. Differentiating marks
can be a different color wire (copper
or “silver”); a strand of yarn in one
conductor; thin, raised ribs on one
part of the outer insulation; or a
printed “+” marking on one of the
insulators. It does not make any
difference which of the two strands of
wire go to (+) and (–) on the speakers
and amplifier, as long as both
speakers are connected identically.
Push down on the button below the
terminal and insert the wire, or the
banana plug, through the hole
(see Figure 2).
CONNECTIONS
To connect the G Center to the center
channel output of your AV receiver or
amplifier, use two-conductor insulated wire. Your JBL dealer can
recommend suitable cables, or you
can buy wire at most hardware or
electronic stores. We recommend #16
AWG wire as a minimum size. If your
speaker is more than 30 feet (10 m)
from your AV receiver or amplifier,
use larger diameter, lower gauge
wire. Connections are made at the
terminals located on the back of the
G Center speaker. The terminals
accept bare wire or dual banana
plugs, either of which will provide
easy, secure connections.
Figure 2
The red terminal on the loudspeaker
should be connected to the red or (+)
center channel connection terminal
on the AV receiver or amplifier, and
the black to the black or (–).
Connecting the loudspeaker in this
manner ensures that it will be in
phase; that is, work together rather
than in opposition to the left and right
channel speakers. Connecting
2
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