Yamaha NS225F - NS 255F Left User manual

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NS-225F
SPEAKER SYSTEM
Thank you for choosing a Yamaha speaker system.
Caution
■ Read the following before using these speakers:
• To assure the finest performance, please read
this manual carefully. Keep it in a safe place for
future reference.
• Install the speakers 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 electric shock, do
not expose the speakers to dripping or
splashing.
• To prevent the enclosure from warping or
discoloring, do not place the speakers where
they will be exposed to direct sunlight or
excessive humidity.
• Do not place the following objects on top of the
speakers:
1. Glass, china, etc.
If glass etc. falls by vibrations and breaks,
it may cause personal injury.
2. A burning candle etc.
If the candle falls by vibrations, it may
cause fire and personal injury.
3. A vessel with water in it
If the vessel falls by vibrations and water
spills, it may cause damage to the unit, and/
or you may get an electric shock.
• Do not place the speakers where foreign
objects such as water drips might fall. It might
cause a fire, damage to this unit, and/or
personal injury.
• Do not place the speakers where they are liable
to be knocked over or struck by falling objects.
Stable placement will also ensure better sound
performance.
• Secure placement or installation is the owner’s
responsibility. Yamaha shall not be liable for
any accident caused by improper placement or
installation of speakers.
• Any time you note distortion, reduce the
volume of your amplifier immediately. Make
sure the input power does not exceed the
specified maximum input power, otherwise the
speakers will be damaged.
• Do not attempt to clean the speakers with
chemical solvents as this might damage the
finish. Use a clean, dry cloth.
• Do not attempt to modify or fix the speakers.
Contact qualified Yamaha service personnel
when any service is needed. The cabinet
should never be opened for any reasons.
Note:
This speaker is magnetically shielded, but placing
them too close to a TV may impair the TV picture. If
this happens, move the speaker away from the TV.
Owner’s Manual
URG

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Precautions When
Positioning the Speakers
The speaker is constructed with the majority of
the weight located in its upper portion, and is thus
susceptible to falling over if proper care is not
taken to insure its stability. If the speaker falls
over, it may damage the speaker or be the cause of
injury (or even death) to persons and/or damage to
personal property.
■ For safe and proper use of the
speaker:
• Position the speaker in a location that is solid,
level, smooth, and low (with respect to the
floor).
• Do not push or apply pressure to the side of the
speaker when moving, or lean objects against
the side of the speaker.
• Do not sit on or set objects on top of the
speaker.
Vibrations or jolts associated with earthquakes
and other phenomena or activities may cause the
speaker to fall over. For safety reasons, using
commercially available products that increase
stability in the speaker is recommended (metal
fittings or chains, etc.).
Placing the Speakers
Place the speakers on a sturdy, vibration-free
surface.
■ Using as Normal Stereo Speakers
To get the best stereo performance, angle the
speakers inward so as to create a triangle, with the
listener at the apex.
■ Using as Front Speakers in a
Surround Sound System
Position the speakers both side of your TV. The
positioning of these speakers is important because
they provide a solid anchor for the sound image.
They should be positioned facing the listener at
about ear level, and equidistant from the TV.
Subwoofer
Surround L
Center
Surround R
NS-225F

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English
Connecting Your
Speakers
Always turn off your amplifier or receiver
before making any connections.
■ Preparing Your Speaker Cables
Carefully remove 10 mm (3/8 ”) of insulation
from both ends of your speaker cables and twist
the bare wires tightly, as shown.
■ Hookup
■ Using a Banana Plug
1.Remove the speaker terminal cover by
gently pulling it toward you.
2.Tighten the terminal knob.
3.Simply insert the banana plug into the
terminal.
Good No Good
10 mm
(3/8 ”)
SPEAKERS
A
B
LR
+
+– –
+
–
Loosen
Tighten
Amplifier or
receiver
Notes:
• Make sure that the bare wires are not touching each
other as this could damage the speaker and
amplifier.
• Connect one speaker to the left terminals of your
amplifier, and another speaker to the right
terminals, making sure not to reverse the polarity
(+, –). If one speaker is connected with reversed
polarity, the sound will be unnatural and lack bass.
1
3
2
Banana Plug

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.
Specifications
Type.................2-way bass-reflex speaker system
magnetic shielding type
Drivers............................ 3 cm (1”) dome tweeter
8 cm (3.1”) cone woofer x2
Impedance ...................................................... 6 Ω
Frequency response....................... 60 Hz–50 kHz
Nominal Input power ...................................40 W
Maximum input power...............................120 W
Sensitivity................................... 86 dB/2.83 V/m
Crossover frequency....................................3 kHz
Dimensions (with the stand)
(W ✕ H ✕ D)
........236 (9.3”) ✕1050 (41.3”) ✕236 (9.3”) mm
Weight ......................................7.7 kg (16.98 lbs)
* Specifications are subject to change without
notice due to product improvements.
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.
©2004 All rights reserved.
YAMAHA ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A.
YAMAHA CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA
YAMAHA ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR. 22-34, 25462 RELLINGEN BEI HAMBURG, F.R. OF GERMANY
YAMAHA ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE
YAMAHA ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD18 7GQ, ENGLAND
YAMAHA SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, 400 43 VÄSTRA FRÖLUNDA, SWEDEN
YAMAHA MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA
Printed in Indonesia WD66630-1
This product mainly uses lead-free solder.
Cet appareil utilise principalement de la soudure sans plomb.
Dieses Produkt verwendet hauptsächlich bleifreies Lot.
Este producto utiliza principalmente soldadura sin plomo.