Yamaha NS-M325 Manuel utilisateur
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Read this before using the speaker.
•To assure the finest performance, please read this
manual carefully. Keep it in a safe place for future
reference.
•Install the speaker in a cool, dry, clean place – away
from windows, heat sources, sources of excessive
vibration, dust, moisture and cold. Avoid sources of
humming (transformers, motors). To prevent fire or
electrical shock, do not expose the speaker to rain or
water.
•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 following objects on the speaker:
Glass, china, etc.
If glass etc. falls by vibrations and breaks, it may cause
personal injury.
A burning candle etc.
If the candle falls by vibrations, it may cause fire and
personal injury.
A vessel with water in it
If the vessel falls by vibrations and water spills, it may
cause damage to the speaker, and/or you may get an
electric shock.
•Do not place the speaker where foreign objects such as
water drips might fall. It might cause a fire, damage to
the speaker, and/or personal injury.
PRECAUTIONS
NS-M325 Speaker System
OWNER’S MANUAL
URGT
Thank you for selecting this YAMAHA NS-M325 speaker system.
•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.
•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. Use a clean,
dry cloth.
•Do not attempt to modify or fix the speaker. Contact
qualified YAMAHA service personnel when any service
is needed. The cabinet should never be opened for any
reasons.
•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.
NS-M325-EN 6/20/05, 1:32 AM1
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WARNING:
•This speaker weighs 3.8 kg (8.4 lbs). Do not mount it
on thin plywood or a wall with soft surface material. If
mounted, the screws may come out of the flimsy
surface and the speaker may fall. This damages the
speaker or causes personal injury.
•Do not install the speaker to a wall with nails,
adhesives, or any other unstable hardware. Long-
term use and vibrations may cause it to fall.
•To avoid accidents resulting from tripping over loose
speaker cable, fix it to the wall.
■To mount the speaker on a wall by using
the attached mounting bracket
Fasten screws into a firm wall or wall support as shown
in the figure, and hang the holes of the mounting
bracket on the protruding screws.
*Make sure that the screws are securely caught by the
narrow parts of the holes.
Wall/ wall
support
Tapping screw (3.5–4 mm)
(Available at the hardware
store)
40 mm
Min.
20 mm
3 mm
You can also use the screw holes on the rear of the
speaker for installing the speaker using a commericially
available speaker bracket (if you do not use the attached
mounting bracket).
Screw holes
Diameter: 6 mm
Hole depth: 15 mm
60 mm
Place the speakers on a sturdy, vibration-free surface, on a
well-built stand.
■Using as 2ch stereo speakers
Better stereo images will be obtained when the speakers
are slightly angled in towards the listeners.
■Using as front speakers in a multi channel
system
Position the speakers on both sides of the TV. The
positioning of speakers is important, because it controls the
whole sound quality of a multi channel system. Set up the
speakers on the basis of your listening position by following
the owner’s manual supplied with your amplifier.
■Using as presence or surround speakers
Mount the speakers on a wall or place the speakers on a
shelf. Determine the best position by following the owner’s
manual supplied with your amplifier.
Note:
This speaker features a magnetically shielded design,
but there is still a chance that placing it too close to a
TV set might impair picture color or create a buzzing
noise. Should this happen, move the speaker away from
the TV set.
PLACING THE SPEAKERS
Subwoofer
Center
NS-M325
(Front)
NS-M325
(Presence)
NS-M325
(Surround)
NS-M325
(Surround
back)
NS-M325-EN 6/20/05, 1:32 AM2
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English
SPEAKERS
A
B
L
R
+
+––
+
–
CONNECTIONS TO YOUR AMPLIFIER
Amplifier or
Receiver
NS-M325
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 the amplifier
(or receiver) with the speaker cable.
•Connect the (+) terminals on the amplifier (or receiver)
and the speakers using one side of the cable. Connect
the (–) terminals on both components using the other
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.
How to connect:
1Loosen the knob.
2Remove the insulation coating at the extremity of each
speaker cable by twisting the coating off.
3Insert the bare wire.
4Tighten the knob and secure the cables.
Test the firmness of the connection by pulling lightly on
the cables at the terminal.
Note:
Do not let the bare speaker wires touch each other as
this could damage the speaker or the amplifier, or both
of them.
Loosen
Black (–)
When using a banana plug
1Remove the cover by pulling it toward you.
2Tighten the terminal knob.
3Simply insert the banana plug into the terminal.
Banana plug
21
3
Red (+)
NS-M325
Speakers output
terminals of the
amplifier (or
receiver)
(R) (L)
Tighten
NS-M325-EN 6/20/05, 1:32 AM3
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SPECIFICATIONS
Type .............. 2-way acoustic suspension speaker system
Magnetic shielding type
Driver ............................................ 10 cm (4”) cone woofer
3 cm (1”) dome tweeter
Impedance ................................................................... 6 Ω
Frequency Response .................. 65 Hz to 50 kHz (-10d B)
Nominal Input Power .................................................. 30 W
Maximum Input Power ............................................. 120 W
Sensitivity .................................................. 86 dB/2.83 V/m
Crossover Frequency .............................................. 2.5kHz
Dimensions (WxHxD) ......................... 150 x 275 x 175 mm
(5-7/8” x 10-13/16” x 6-7/8”)
Weight ................................................... 3.8 kg (8 lbs.6 oz.)
●Specifications are subject to change without notice due
to product improvements.
●Care should be taken not to exceed the input power
values noted above.
REMOVING THE FRONT COVER
The front cover is attached to protect the speaker unit, but
you can remove it if necessary.
The front cover is fixed by magnets. Hold the speaker with
one hand, and pull the front cover gently with the other to
remove it.
Notes:
•When removing the cover, be careful that you don’t
touch the drive units, and don’t exert excessive
force with any tools.
•There are magnets on the reverse side of the front
cover. Do not place the front cover close to objects
that might be affected by magnets, such as TVs,
clocks, magnetic cards, diskettes etc. after
removing it.
NS-M325-EN 6/20/05, 1:32 AM4
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