Jbl GHE1000V, GHE1000V BLK, GHE1200V, GHE1200V BLK User Manual
GHE SERIES
LOUDSPEAKERS
OWNER’S
MANUAL
GHE1000V
GHE1200V
GHE
SERIES
INTRODUCTION
Congratulations on choosing JBL GHE
Series Loudspeakers. Their high efficiency
and bass response will greatly increase
your enjoyment of recorded music. JBL
speakers are built with careful attention
to detail, using only the highest quality
materials. They will provide many years
of excellent performance.
Your GHE Series Loudspeakers are very
easy to set up. We recommend that you
take a few minutes to read this owner's
manual before you begin, and follow the
instructions carefully.
using your speakers for both video and
audio, the speakers should be moved further apart from each other, approximately
2 to 3 feet (.75 to 1m) from the sides of
the monitor/TV.
ENGINEERING FEATURES
1.
High Efficiency.
receivers will be able to produce acoustic
levels normally associated with amplifiers
of substantially higher power ratings.
2.
Video Shielding.
incorporates magnetic shielding to allow
use on or next to video monitors and TVs.
The magnetic shielding prevents the
powerful GHE speaker magnets from
creating any interference or distortion of
the video picture.
Bi-wiring Capability.
3.
speaker terminals are designed so that
separate sets of speaker cable can be
attached to the woofer and midrange/
treble portions of the crossover network.
4.
Polypropylene Cone Midrange.
vides clean, lifelike, accurate reproduction
of the human voice and other sounds
revealed by midrange frequencies.
5.
Tuned Port Bass Design.
frequency response, reduces distortion
and improves power handling capacity.
Modest amplifiers or
The GHE Series
The GHE Series
Pro-
Extends low-
PLACEMENT
The GHE Series cabinet height and driver
placement allow for speaker placement
directly on the floor. The video shielding
allows for the option of placement very
close to a video monitor/TV. When used
as Left and Right Channel speakers in a
Dolby Pro Logic AV system, the shielding
allows the speakers to be placed up
against the sides of the monitor/TV for a
compact AV system profile (see Fig. 1). If
you desire better stereo imaging when
Fig. 1
For the best audio stereo reproduction,
the two loudspeaker systems should be
an equal distance from your listening position and separated so that the angle
between them, at the listening position, is
between 40 and 60 degrees (see Fig. 2).
For example, if your listening position is 8
to 12 feet (2.5 to 4 m) from each speaker,
the two systems should be about 8 feet
(2.5 m) apart. Placing the loudspeakers
in corners or against a wall will result in
the strongest (not necessarily the most
accurate) bass. Since the GHE Series are
ported on the front panel so you can place
the rear of the speaker up against a wall
if desired.
Fig. 2
2
Left
Speaker
Amplifier/Receiver
Right
Speaker
Red Blk.
(+)
++
(–)
RedRLBlk.
(+) (–)
GHE SERIES
CONNECTIONS
To connect the loudspeaker systems
to the receiver or amplifier, use twoconductor 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.
use the bi-wiring feature, please read
that section of the manual for type of
speaker interconnect wire to use.
your speakers are more than 30 feet
(10 m) from your receiver or amplifier, use
larger diameter wire. Connections are
made at the terminals located on the back
of the loudspeaker system. The terminals
accept bare wire or dual banana plugs,
either of which will provide easy, secure
connections.
Preparing the Hookup Wire
Carefully plan your wire lengths before
cutting any speaker wire. Be sure to allow
plenty of extra wire to help hide paths in
corners, along baseboards, etc.
1. First determine the wire length needed
between the most distant speaker and the
receiver or amplifier.
2. Now make the hookup wires for both
speakers this length, even if one loudspeaker is much closer to your amplifier
than the other. This will help maintain
proper signal balance.
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. If using wire ends, unscrew the
colored nut on the terminal cup, insert the
wire end into the hole in the metal post,
then retighten the nut until the wire is
If planning to
tightly secured. If using banana plugs,
simply insert the plug directly into the
holes on the top of the metal posts.
For each channel, the red terminal on the
loudspeaker should be connected to the
red or (+) loudspeaker connection terminal
on the receiver or amplifier, and the black
to the black or (–) speaker conection terminal (see Fig. 3). Connecting the loudspeakers in this manner ensures that they
If
will be in phase; that is, work together
rather than in opposition. Connecting the
loudspeakers out of phase will not damage them, but will result in less bass and
poor imaging.
Fig. 3
Hooking Up Multiple Sets of Speakers
If your receiver has two complete sets of
speaker terminals ("A" and "B"), it's possible to hook up an additional pair of speakers for
simultaneous
sound in another
room. However, some speakers may not
be usable as a second pair if you want to
play two sets at once. Before hooking up
another set of speakers besides your
GHE Series, check the following:
1. Your receiver or amplifier minimum
load impedance. Impedance is always
expressed in ohms and can be found in
the owner's manual that came with your
unit. For example, the following are typical
entries in receiver/amplifier owner's
manuals:
A)100 watts RMS into 8 ohms, both channels driven, 20–20kHz with less than
0.02% THD.
3
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