JBL G400 Käyttöohje
Lue alta 📖 käyttöohje suomeksi merkille JBL G400 (4 sivua) kategoriassa Kaiutin. Tämä opas oli hyödyllinen 5 henkilölle ja sai 4.5 tähden keskimäärin 2 käyttäjältä
Sivu 1/4
INTRODUCTION
Congratulations on choosing JBL
loudspeakers. Their highly accurate,
uncolored and balanced sound char-
acter will greatly increase your
enjoyment of recorded music. JBL
speakers are built with careful atten-
tion to detail, using only the highest
quality materials. They will provide
many years of excellent performance.
PLACEMENT
For the best stereo reproduction, the
two loudspeaker systems should be
placed an equal distance from your
listening position and separated so that
the angle between them, at the listen-
ing position, is between 40 and 60
degrees (see Fig. 1). 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 loudspeaker in a cor-
ner or against a wall will result in the
strongest (but not necessarily the most
accurate) bass. If possible, G models
that are ported on the back should not
be placed closer than 12 inches (305
mm) from the wall behind it.
For the best stereo imaging, we rec-
ommend that the systems be placed
so that the high frequency transduc-
ers are positioned approximately at
ear level of a seated listener. That’s
why smaller loudspeakers will benefit
from placement on stands or book-
shelves. Every room is dierent and
there are dierent tastes. So don’t
hesitate to experiment on your own.
G SERIES
LOUDSPEAKERS
OWNER’S
MANUAL
40
100
200
300
400
500
40°-60°
Fig. 1
Thanks to their high efficiency, JBL
loudspeakers will produce reasonable
volume levels in a room of moderate
size with very little amplifier power.
However, using a small amplifier to
obtain the desired volume listening
levels may lead to overdriving the
unit. This will generate high distortion
levels and may cause damage to your
loudspeaker. For the best perfor-
mance, an amplifier should be
selected with an output rating that is
greater than the maximum power that
will be used. This margin of reserve
power will ensure that the amplifier
will not attempt to deliver more power
than its design allows. However, the
power amplifier’s power rating per
channel must not exceed the
maximum recommended amplifier
power for that specific loudspeaker
model. Please see the specifications
section for details. Following these
two guidelines will provide virtually
distortion-free sound reproduction
and long loudspeaker life.
CONNECTIONS
To connect your JBL loudspeaker sys-
tems to a receiver or an amplifier, use
two-conductor insulated wire. Your
JBL dealer can recommend suitable
cables, or you can buy wire at most
hardware stores. We recommend #16
AWG wire as a minimum size. If 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
1. First determine the distance
between the most distant speaker.
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 o 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 dierence between the two
conductors of each molded pair of
speaker wire. Dierentiating marks
can be a dierent 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 a
dierence which of the two
conductors 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 Fig. 2).
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
(–). Connecting the loudspeakers in
this manner ensures that they 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.
2
Left
Speaker
Red
(+)
Blk.
(–)
Right
Speaker
Red
(+)
Blk.
(–)
Amplier/
Receiver
+ L R+
Fig. 2
TROUBLESHOOTING
The vast majority of new speaker
“malfunctions” end up being traced to
connections or switch settings. Check
the following tips first, before request-
ing service.
No sound at all or very faint sound
from both speakers
1. Amp/receiver tape monitor button
pushed in while using CD, FM or
phono inputs.
2. Wrong speaker switch, “A” or “B”
speaker output.
3. Sound source (CD, cassette deck,
turntable) not turned on, not
activated, not hooked up or not
selected on amp/receiver front panel.
No sound from one speaker
1. Balance control turned all the way
left or right.
2. Speaker wire has become
disconnected.
Both speakers play at low
volume but shut o as volume is
increased OR sound turns on and
o intermittently
A few strands of speaker wire may be
shorting out. Recheck the connections.
Recheck the impedance requirements
of the amp.
Bass is very weak AND/OR sound
seems to come from each speaker
separately, without creating a
stable stereo image between the
speakers.
1. The polarity (+&–) of one speaker
has been reversed relative to the
other. Double check connections.
2. Speakers are too far away from
back and side walls or too far apart.
Experiment again with the speaker
placement. If you are still experi-
encing problems, consult your JBL
dealer.
GENERAL CARE
The grille is held in place by pins near
the edges (except G40, which has a
non-removable grille). To remove the
grille, grasp it by both top and bottom
edges and pull gently. To replace
grille, reposition it carefully and press
gently at the corners. Do not push on
the center area of the grille.
The loudspeaker cabinet may be
cleaned with a slightly damp cloth. To
remove dust from the grille cloth, use
a vacuum with a brush attachment.
Spots may be removed with a
commercial spot remover. Do not use
any cleaners or solvents on the
speaker drivers themselves.
SERVICE
Should your loudspeaker ever need
service, return it to the JBL dealer
from whom it was purchased. If for
some reason this is impractical, call
800-336-4JBL for your nearest
warranty station. Do not return
products to the JBL factory without
prior authorization.
3
Specifications G40 G100 G200
High Frequency Transducer 2" fiber cone 14 mm 1"
Low Frequency Transducer 5" 5" 6-1/2"
Crossover Frequency 2.2 kHz 3 kHz 3 kHz
Frequency Response (–6 dB) 75 Hz – 20 kHz 70 Hz – 20 kHz 55 Hz – 20 kHz
Sensitivity (1 Watt /1 Meter) 86 dB 87 dB 88 dB
Nominal Impedance 8 Ohms 6 Ohms 6 Ohms
Power Handling Range 10 – 50 Watts 10 – 50 Watts 10 – 60 Watts
External Dimensions
(H X W X D) 11 x 6-1/2 x 7-1/4" 12-3/16 x 7-1/8 x 8-3/4" 15 x 9-1/4 x 8-13/16"
280 x 165 x 184 mm 310 x 181 x 222 mm 381 x 235 x 224 mm
Weight (each) 7 lbs / 3.2 kg 8 lbs / 3.6 kg 12.1 lbs / 5.5 kg
G SERIES LOUDSPEAKERS
Tuotetiedot
| Merkki: | JBL |
| Kategoria: | Kaiutin |
| Malli: | G400 |
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