Yamaha NS-70 Manuel utilisateur
NS-70
Thank you for selecting this Yamaha NS-70 speaker system.
PRECAUTIONS
Read these precautions carefully before using your speaker.
●Any time you note distortion, reduce the volume control on
your amplifier to a lower setting. Never allow your amplifier to
be driven into “clipping”. Otherwise the speaker may be
damaged.
●When using an amplifier with a rated output power higher than
the nominal input power of the speaker, care should be taken
never to exceed the speaker’s maximum input.
●Do not attempt to clean the speaker with chemical solvents as
this might damage the finish. To clean, wipe with a dry, soft
cloth.
●To prevent the enclosure from warping or discoloring, do not
place the speaker where it will be exposed to direct sunlight or
excessive humidity.
●Do not place the speaker where it is liable to be knocked over
or struck by falling objects. Stable placement will also ensure
better sound performance.
●Placing the speaker on the same shelf or rack as the turntable
can result in feedback.
●Secure placement or installation is the owner’s
responsibility.
YAMAHA shall not be liable for any accident caused by
improper placement or installation of the speaker.
BEFORE MAKING CONNECTIONS, MAKE SURE THAT THE
AMPLIFIER IS SWITCHED OFF.
■CONNECTIONS
●Connect the screw-type input terminals at the rear of the
speakers to the speaker output terminals of your amplifier with
the provided speaker cables.
●One side of the speaker cable is red and the other side is
black. Connect the (+) terminals on both the amplifier and the
speakers using this red side. Connect the (–) terminals on both
components using the black side of the cable.
●Connect one speaker to the left (marked L) terminals of your
amplifier, and another speaker to the right (marked R)
terminals, making sure not to reverse the polarity (+, –). If one
speaker is connected with reversed polarity, the sound will be
unnatural and lack bass.
Procedures:
➀Loosen the terminal knob.
➁Insert the bare wire end properly into the terminal hole.
[Remove approx. 10 mm (3/8”) insulation from the speaker
cable.]
➂Tighten the knob.
➃Test the security of the connection by tugging lightly on the
cable at the terminal.
* Banana Plug connections
are also possible. First
tighten the terminal knobs,
and then insert the
Banana Plug connector
into the corresponding
terminal hole.
Note
Do not let the bare speaker wires touch each other as this
could damage the speaker and/or the amplifier.
CONNECTION TO YOUR AMPLIFIER
Red line
Black line
Speaker (R)
Speaker output
terminals of the
amplifier
Natural Sound 3-way, 4-speaker Bass Reflex Speaker System
Speaker (L)
Loosen
Black(–)
Tighten
Red (+)
Red line
PLACING THE SPEAKER
●Place the speakers on a sturdy, vibration-free surface. If you
cannot obtain good bass quality when the speakers are placed
directly on the floor, insert a block etc. between the speakers
and the floor.
●Better stereo images will be obtained when the speakers are
slightly angled in towards the listeners.
Note
Bacause this speaker is not a magnetically shielded type,
there may be some influence on a TV picture depending on
the type of TV or the placement of the speaker. In such a
case, place the speaker apart from the TV so that there is no
influence on TV picture.
REMOVING THE FRONT COVER
The front cover is fastened to the enclosure at six points, and
can be removed if desired. To remove the cover, hold on to both
sides and slowly pull straight away from the speaker. To
reattach, line up the six pegs on the inside surface of the cover
with the six corresponding holes on the speaker and push
gently.
Note
When the cover is removed, take care not to touch the
speaker units with your hands or to exert excessive force
with tools.
SPECIFICATIONS
Type .......................3-way 4-speaker bass reflex speaker system
Speaker Unit..............................................20 cm cone woofer x 2
10 cm cone mid-range
2.5 cm (1”) dome tweeter
Nominal Impedance...........................................................6 ohms
Frequency Response............................................38 Hz – 20 kHz
Nominal Input Power..............................................................80W
Music Input Power................................................................280W
Sensitivity.....................................................................90 dB/W·m
Dimensions (WxHxD)....................................254 x 950 x 314 mm
..............................................................(10” x 37-3/8” x 12-3/8”)
Weight.....................................................................15 kg (33 lbs.)
Accessories..............................................Speaker cable (4m) x 2
* Specifications subject to change without notice due to product
improvements.
* Care should be taken not to exceed the input power values
noted above.
VZ 13320
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