Jbl GHE1000V, GHE1000V BLK, GHE1200V, GHE1200V BLK Manual

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GHE SERIES
LOUDSPEAKERS
OWNER’S
MANUAL
GHE1000V GHE1200V
GHE
SERIES
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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