JBL SC305 Handleiding

JBL Speaker SC305

Lees hieronder de 📖 handleiding in het Nederlandse voor JBL SC305 (4 pagina's) in de categorie Speaker. Deze handleiding was nuttig voor 2 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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SC305
CENTER CHANNEL
SPEAKER
OWNER’S
MANUAL
SC
INTRODUCTION
Congratulations on choosing JBL
Series loudspeakers. Their highly
accurate, uncolored and balanced
sound character 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 per-
formance.
The SC305 Center Channel Speaker
is the result of concentrated eorts to
combine traditional JBL performance
values with elegant contemporary
appearance. Some of the engineer-
ing features of the SC305 are:
Smooth, extended response:
The 14mm Titanium Laminate dome
tweeter, dual 5" polymer laminated
cone drivers and carefully designed
dividing network deliver the clear,
crisp, quality sound reproduction
needed to deliver the accurate, intelli-
gible vocal information required by a
center channel speaker.
High Quality Crossover
Network: the computer-optimized
dividing network employs up to third-
order (18 dB per octave) crossover
sections. JBL's use of high quality
capacitors and low-loss/low-distortion
inductors assures freedom from
phase or amplitude distortions.
305
2
Magnetic Shielding: prevents stray
magnetic elds from creating any
interference or distortion of the video
picture. This allows placement of the
SC305 directly on top of, or directly
below the video monitor.
Cabinet Design: the multi-angled
cabinet provides options of locating
the SC305 directly on top of the video
monitor or on the oor in front of the
monitor.
PLACEMENT
As the center channel contains the
dialog and other central action
sounds, the speaker should be locat-
ed very close to the video monitor
centered with the monitor's center line.
The SC305 can be placed in two loca-
tions:
1) On top of the video monitor.
Place the large at bottom of the
speaker directly on top of the monitor,
with the front edge of the speaker
grille ush with the edge of the moni-
tor. The speaker grille/bae should
be pointing directly at the listener.
See Fig. 1.
2) On the oor directly in front of the
monitor.
Place the angled side of the
cabinet on the oor so that the speak-
er grille/bae is pointing directly
at the listener. The grille can be
removed and re-installed so the JBL
Logo is oriented properly. See Fig. 2.
CONNECTIONS
To connect the SC305 to the center
channel output of your AV receiver or
amplier, use two-conductor insulated
wire. Your JBL dealer can recommend
suitable cables, or you can buy wire at
most hardware stores. We recom-
mend #16 AWG wire as a minimum
size. If your speaker is more than 30
feet (10 m) from your AV receiver or
amplier, use larger diameter wire.
Connections are made at the termi-
nals located on the back of the SC305
speaker. The terminals accept bare
wire or dual banana plugs, either of
which will provide easy, secure con-
nections.
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
amplier than the other. This will help
maintain proper signal balance.
3. Strip o 3/8" of insulation from both
ends of each conductor.
Fig.2
Fig.1
CENTER LINE
CENTER
LINE
3
4. Twist each set of thin wires into a
tightly-bunched spiral.
5. At this point you need to identify a
visual dierence between the two con-
ductors of each molded pair of speak-
er wire. Dierentiating marks can be a
dierent 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 dierence which of the two
strands of wire go to (+) and (-) on the
speakers and amplier, as long as
both speakers are connected identi-
cally. Push down on the button below
the terminal and insert the wire, or the
banana plug, through the hole (see
Fig. 3).
The red terminal on the loudspeaker
should be connected to the red or (+)
center channel connection terminal on
the AV receiver or amplier, and the
black to the black or (-). Connecting
the loudspeaker in this manner
ensures that it will be in phase; that is,
work together rather than in opposition
to the left and right channel speakers.
Connecting loudspeakers out of phase
will not damage them, but will result in
less bass and poor imaging.
Using the controls on your center
channel AV receiver/amp, adjust the
center channel level (volume) control
so that the sound from the center
speaker is the same level
at your nor-
mal listening position
, as the sound
from the left and right front speakers.
POWER HANDLING
Thanks to its high eciency, the JBL
SC305 loudspeaker will produce reason-
able volume levels in a room of moderate
size with very little amplier power.
However, using a small amplier to obtain
the desired volume listening levels may
lead to overdriving the amplier. This will
generate high distortion levels and may
cause damage to your loudspeaker. For
the best performance, an amplier 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 amplier will not attempt to
deliver more power than its design allows.
However, the amplier's power rating per
channel must not exceed the maximum
recommended amplier power for that spe-
cic loudspeaker model. Please see the
specication section for details. Following
these guidelines will provide virtually distor-
tion-free sound reproduction and long loud-
speaker life.
TROUBLESHOOTING
The vast majority of new speaker "malfunc-
tions" end up being traced to connections
or switch settings. Check the following tips
rst, before requesting service.
No sound at all or very faint sound from
the center channel speaker
1. Speaker wire has become disconnected.
2. One of the connections between sound
source and AV receiver/amp is faulty or
has become disconnected.
3. AV receiver/amp center channel mode
not selected. Please select a mode that
activates the center channel.
4. AV receiver/amp "audio direct" switch is
activated. This switch should be o to acti-
vate the 5 speaker surround mode.
5. Sound source (VDP, VCR,CD,cassette
deck, turntable) not turned on, not activat-
ed, not hooked up or not selected on AV
receiver/amp front panel.
Speaker plays at low volumes but shuts
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 of the amp.
AV Receiver
Center
•
•
(-) (+)
Center
Speaker
Blk Red
(-) (+)
•
•
Fig. 3

Product specificaties

Merk: JBL
Categorie: Speaker
Model: SC305

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