Read JBL LX 2000 CENTER (serv.man2) User Guide / Operation Manual online
world’s most famous brand of loudspeakers.
houses, in football stadiums or at rock concerts - JBL is the loudspeaker brand of choice.
certain that your JBL speakers will provide many years of excellent performance.
at some distance from walls and corners. Approximately 1 m is preferable. Placement in
corners or close to walls will increase the amount of bass, but not necessarily the quality of
the bass. If such placement is unavoidable it is recommended that you use the tone con-
trols on your amplifier or receiver to reduce the bass.
from placement on an open, rigid stand 35-50 cm high, which will place the high fre-
quency unit at ear level, which is important for the creation of the best possible stereo
image. Placement of the speaker on a high quality stand will improve the accuracy of the
bass, which again will lead to the most dynamic, expressive reproduction.
strong bracket. A distance of 2-4 cm from the wall will allow the rear panel mounted reflex
port to work, while complete closing of the port will reduce the deepest bass.
the same distance from your listening position, and separated by an angle of 40° to 60°
(see illustration). For example, if your listening position is 2.4-3.6 m from each speaker,
the two speakers should be 2-2.4 m apart.
sound, we strongly recommend that you experiment to find the placement that gives you
the most pleasing results.
prevent the spikes from changing
height, or from rocking side to side.
of gold-plated terminals. For normal connec-
tion with a single run of loudspeaker cable,
the metal bars between the High and Low
inputs MUST be in place. Connect cable only
to the inputs marked High. For separate
cable connections to the Low and High
inputs, see next section BI-WIRING.
Connect the loudspeakers to your amplifier or
receiver using two-conductor insulated wire.
We recommend 1.5mm
speakers have to be placed at greater dis-
tance from your amplifier or receiver you
should use heavier wire. Too thin wire or too
long wire runs can result in the sound from
that you consult your dealer, who will be happy to assist you in this matter.
loudspeaker terminal on the amplifier or receiver, and the black terminal on the loud-
speaker to the black (–) loudspeaker terminal on the amplifier or receiver. Connecting the
loudspeakers in this manner ensures that they will have the same polarity (“in phase”).
Connecting the loudspeakers with different polarity will not damage them, but will result in
less bass and a poor stereo image. This can be determined by listening to a solo voice: if
the voice can be located in the space between the two loudspeakers, the speakers are
connected with the same polarity. If not, the voice will sound diffuse and be difficult to
place in the space.
that you can easily identify which wire is connected to which terminal.
your dealer or amplifier manufacturer to ensure that the resulting load can be handled
bi-wiring, ALWAYS remove the metal bars between the High and Low inputs. Bi-wiring will
improve resolution and dynamics. For even greater improvement, you may use two ampli-
torted. You can safely use a power amplifier with a power rating greater than the loud-
speaker’s recommended power, as long as the amplifier is not driven beyond it limits.
When amplifiers are overdriven, they “clip” the signal, creating distortion which appears as
a high frequency signal. These high frequency signals are directed to the high frequency
transducer by the crossover network, thereby creating a dangerous condition for the small-
est driver in the loudspeaker system.
sequently the greater the potential danger to the high frequency transducer.
loud and at the same time sound clean and undistorted.
speaker. LX2000 Center is magnetically shielded for safe use near the picture tube and
should be placed directly on top of or beneath the television set. The front edge of LX2000
Center should be on a line with the front edge of the television. LX2000 Center must be
connected in phase to the amplifier/receiver, i.e. plus-to-plus and minus-to-minus, exactly
like the left and right front loudspeakers.
solid wood in its acoustic properties. They are built to give many years of trouble-free ser-
vice, and do not require special attention.
Furniture waxes, polishes or cleaners are not recommended.
following the manufacturer’s instructions. Never use any solvents to clean any part of the
whom it was purchased. If for some reason this is impractical, contact your local JBL dis-