JBL LS Center BG Manual de Usario

JBL Vocero LS Center BG

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English
LS40, LS60, LS80,
LS CENTER
JBL LS SERIES
OWNER’S GUIDE
®
JBL®LS SERIES
For more than 60 years, JBL, Inc. has been providing audio equipment for
concert halls, recording studios and movie theaters around the world and has
become the hands-down choice of leading recording artists and sound
engineers.
With the JBL LS Series, innovative technologies such as pure-titanium
compression drivers, Elliptical Oblate Spheroidal
™(EOS) waveguides and
Bi-Radial Horn®are available to you. Enjoy!
UNPACKING THE SPEAKERS
If you suspect damage from transit, report it immediately to your dealer.
Keep the shipping carton and packing materials for future use.
INCLUDED
LS60, LS80
Spike kit (packed in end pads)
(4) coasters
PLACEMENT
NEVER drag the speaker to move it, as this will damage the spikes, the
feet and/or the wood cabinet itself. Always lift the speaker and carry it to its
new location.
CAUTION: Floorstanding (tower) loudspeakers have a high center of
gravity and may become unstable and tip over during events such as
earthquakes, or if rocked, tipped or improperly positioned. If this is a concern,
these speakers should be anchored to the wall behind them, using the same
procedures and hardware customary for anchoring bookcases and wall units.
The customer is responsible for proper installation and proper selection of
hardware.
STEREO
Before deciding where to place your speakers, survey your room and think
about placement, keeping the following points in mind, using Figure 1 as a
guide:
• For best results, place the speakers 6'–8' (1.5m–2.5m) apart.
• Position each speaker so that the tweeter is approximately at ear level.
• Generally, bass output will increase as the speaker is moved closer to a wall
or corner.
• Refer to “Home Theater” below if you also plan to use the speakers for
home theater reproduction.
Figure 1. Experiment with speaker placement to obtain
the best bass level and stereo imaging in your room.
HOME THEATER
For front-channel use, place one speaker on the left and another on the right,
along either side of the television monitor. The JBL LS speakers are primarily
designed for use with Plasma, LCD and DLP TV screens, and should not be
placed in close proximity of CRT (Cathode Ray Tube) TV sets.
For surround-channel use, place speakers on bookshelves or stands
alongside the listening position. Final placement depends on room acoustics,
availability of space and your listening preference (Figures 2 and 3).
In 6- or 7-channel configurations, place the rear channel(s) behind the
listening position, as shown in Figures 2 and 3.
NOTE: A JBL powered subwoofer will add impact and realism to both
music and film soundtracks. Contact your JBL dealer for recommendations
on subwoofer models for your application.
Figure 2. This overhead view shows a typical home theater plan. Left/right
rear channels are for a 7-channel system. The center rear channel is for
a 6-channel system.
Figure 3. This figure shows an alternate layout, which may be more suitable
for some rooms. Left/right rear channels are for a 7-channel system. The
center rear channel is for a 6-channel system.
INSTALLING SPIKED FEET
LS60, LS80
Four metal spikes are supplied for use when the speaker is to be placed on a
carpeted surface; using them decouples the speaker from the floor to prevent
unwanted damping. To insert the spikes, gently lay the speaker on its side (not
its front or back) on a soft, nonabrasive surface, and unscrew the rubber-
tipped feet (store in a safe place). Each spike then screws into the threaded
insert in each corner. Make sure all four spikes are screwed in completely for
stability. To protect the surface of uncarpeted floors, set each spike into an
included metal coaster.
NEVER drag the speaker to move it, as this will damage the spikes, the feet
the wood cabinet itself and/or the floor. ALWAYS lift the speaker and
carry it to its new location.
2
Listening Position
Left
Channel
Right
Channel
Couch
Left
Front
Channel
Left
Surround
Channel
Left Rear
Channel
Right Rear
Channel
Center Rear
Channel
Right
Surround
Channel
Right
Front
Channel
Center
Channel
JBL Subwoofer
(optional)
Left
Surround
Channel
Right
Surround
Channel
Right Rear
Channel
Left Rear
Channel
JBL Subwoofer
(optional)
Center Rear
Channel
Right
Front
Channel
Left
Front
Channel
Center
Channel
English
WIRING THE SYSTEM
IMPORTANT: MAKE SURE ALL EQUIPMENT IS
TURNED OFF BEFORE MAKING ANY CONNECTIONS
For speaker connections, use a high-quality speaker wire with polarity coding.
The side of the wire with a ridge or other coding is usually considered positive
polarity (i.e., +).
NOTE: If desired, consult your local JBL dealer about speaker wire and
connection options.
The speakers have coded
terminals that accept a variety
of wire connectors. The most
common connection is shown
in Figure 4.
To ensure proper polarity,
connect each + terminal on the
back of the amplifier or receiver
to the respective + (red)
terminal on each speaker, as
shown in Figure 5. Connect the
– (black) terminals in a similar
way. See the owner’s guides
that were included with your
amplifier, receiver and
television to confirm
connection procedures.
IMPORTANT: DO NOT REVERSE POLARITIES
(I.E., + TO – OR – TO +) WHEN MAKING
CONNECTIONS. DOING SO WILL CAUSE POOR
IMAGING AND DIMINISHED BASS RESPONSE.
STANDARD CONNECTION
Figure 5. Wiring diagram shows polarity connections for one channel
of a stereo or home theater system.
BI-WIRING
LS40, LS60, LS80
The outer connection panel and internal dividing network of the LS40, LS60
and LS80 are designed so that separate sets of speaker cables can be
attached to the low-frequency transducer and midrange/high-frequency
transducer portions of this dividing network. This is called bi-wiring. Bi-wiring
can provide several sonic advantages and considerably more flexibility in
power amplifier selection.
Figure 6.
SINGLE-STEREO AMPLIFIER
Figure 7.
DUAL-STEREO AMPLIFIER
Figure 8.
FINAL ADJUSTMENTS
Check the speakers for playback, first by setting the system volume control
to a minimum level, and then by applying power to your audio system. Play
a favorite music or video segment and increase the system volume control
to a comfortable level.
NOTE: You should hear balanced audio reproduction across the entire
frequency spectrum. If not, check all wiring connections or consult the
authorized JBL dealer from whom you purchased the system for more help.
The amount of bass you hear and the stereo-image quality will be affected
by a number of different factors, including the room’s size and shape, the
construction materials used to build the room, the listener’s position relative
to the speakers, and the position of the speakers in the room.
Listen to a variety of music selections and note the bass level. If there is too
much bass, move the speakers away from nearby walls. Conversely, if you
place the speakers closer to the walls, there will be more bass output.
CARE OF YOUR SPEAKER SYSTEM
Each JBL LS Series enclosure has a finish that does not require any routine
maintenance. When needed, use a soft cloth to remove any fingerprints or
dust from the enclosure or grille.
NOTE: Do not use any cleaning products or polishes on the cabinet
or grille.
Standard
Connection
Speaker Wire
3
Figure 4. This figure shows how to
connect bare wires to the terminals.

Especificaciones del producto

Marca: JBL
Categoría: Vocero
Modelo: LS Center BG

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