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Precautions: Read this before operating this unit
• To assure the finest performance, please read this manual
carefully. Keep it in a safe place for future reference.
• Install this unit 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 this unit to rain or water.
• Never open the cabinet. If any foreign objects drop into
the set, contact your dealer.
• The voltage to be used must be the same as that specified
on the rear panel. Using this unit with a higher voltage
than specified is dangerous and may cause a fire and/or
electric shock.
• To reduce the risk of fire or electric shock, do not expose
this unit to rain or moisture.
• Do not use force on switches, controls, or connection
wires. When moving the unit, first disconnect the power
plug and the wires connected to other equipments.
Never pull the wires themselves.
• When not planning to use this unit for a long period (ie.,
vacation, etc.), disconnect the AC power plug from the
wall outlet.
• To prevent lightning damage, disconnect the AC power
plug when there is an electric storm.
• Since this unit has a built-in power amplifier, heat will
radiate from the rear panel. Place the unit apart from the
walls, allowing at least 20 cm of space above, behind and
on both sides of the unit to prevent fire or damage.
Furthermore, do not position with the rear panel facing
down on the floor or other surfaces.
• Do not cover the rear panel of this unit with a newspaper,
a tablecloth, a curtain, etc. in order not to obstruct heat
radiation. If the temperature inside the unit rises, it may
cause fire, damage to the unit and/or personal injury.
• Do not place the following objects on this unit:
Glass, china, small metallic etc.
If glass etc. falls by vibrations and breaks, it may
cause bodily injury.
A burning candle etc.
If the candle falls by vibrations, it may cause fire and
bodily 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 this unit where foreign objects such as
water drips might fall. It might cause a fire, damage to
this unit, and/or personal injury.
• Never put a hand or a foreign object into the YST port
located on the right side of this unit. When moving this
unit, do not hold the port as it might cause personal
injury and/or damage to this unit.
• Never place a fragile object near the YST port of this
unit. If the object falls or drops by the air pressure, it may
cause damage to the unit and/or personal injury.
• Never open the cabinet. It might cause an electric shock
since this unit uses a high voltage. It might also cause
personal injury and/or damage to this unit.
• When using a humidifier, be sure to avoid condensation
inside this unit by allowing enough spaces around this unit
or avoiding excess humidification. Condensation might
cause a fire, damage to this unit, and/or electric shock.
• Super-bass frequencies reproduced by this unit may
cause a turntable to generate a howling sound. In such a
case, move this unit away from the turntable.
• This unit may be damaged if certain sounds are
continuously outputted at high volume level. For
example, if 20 Hz-50 Hz sine waves from a test disc,
bass sounds from electronic instruments, etc. are
continuously outputted, or when the stylus of a
turntable touches the surface of a disc, reduce the
volume level to prevent this unit from being damaged.
• If you hear distorted noise (i.e., unnatural, intermittent
“rapping” or “hammering” sounds) coming from this
unit, reduce the volume level. Extremely loud playing
of a movie soundtrack’s low frequency, bass-heavy
sounds or similarly loud popular music passages can
damage this subwoofer system.
• Vibration generated by super-bass frequencies may
distort images on a TV. In such a case, move this unit
away from the TV set.
• Do not attempt to clean this unit with chemical solvents
as this might damage the finish. Use a clean, dry cloth.
• Be sure to read the “TROUBLESHOOTING” section
regarding common operating errors before concluding
that the unit is faulty.
• 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 subwoofer.
This unit features a magnetically shielded design, but
there is still a chance that placing it too close to a TV
set might impair picture color. Should this happen,
move this unit away from the TV set.
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WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS UNIT TO RAIN
OR MOISTURE.
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Table of contents
Precautions: Read this before operating this unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Supplied accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Positioning the subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Basic connection example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Connecting components and the subwoofer to AC power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Using the subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pre-adjusting the subwoofer volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Advanced Yamaha Active Servo Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Frequency characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
English
Introduction
Features Supplied accessories
Please confirm that the following item is included
in the package.
Advanced YST
Advanced Yamaha Active Servo Technology is a
unique system to let the speaker unit have a perfectly linear motion by the speaker and amplifier
combination.
QD-Bass Technology
QD-Bass (Quatre Dispersion Bass) technology
is a Yamaha unique technology to radiate the
sound efficiently in four horizontal direction.
This subwoofer system is equipped with a linear
port unique to Yamaha that provides smooth bass
response during playback, minimizing extraneous
noise not included in the original input signal.
Non-skid pads
Subwoofer cable (5 m)
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Positioning the subwoofer
A
B
C
One subwoofer will have a good effect on your
audio system, however, the use of two subwoofers
is recommended to obtain more effect.
If using one subwoofer, it is recommended to place
it on the outside of either the right or the left front
speaker. (See fig. .) If using two subwoofers, it is
A
recommended to place them on the outside of each
front speaker. (See fig. .) The placement shown
C
in fig. is also possible, however, if the subwoofer
B
system is placed directly facing the wall, the bass
effect may die because the sound from it and the
sound reflected by the wall may cancel out each
other. To prevent this from happening, face the
B
subwoofer system at an angle as in fig. or .
A
Note
There may be a case that you cannot obtain enough
super-bass sounds from the subwoofer when
listening in the center of the room. This is because
“standing waves” have been developed between two
parallel walls and they cancel the bass sounds.
In such a case, face the subwoofer obliquely to the
wall. It also may be necessary to break up the parallel
surfaces by placing bookshelves etc. along the walls.
Use the non-skid pads
Put the provided non-skid pads at the four corners
on the bottom of the subwoofer to prevent the
subwoofer from moving by vibrations etc.
( : subwoofer, : front speaker)
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Connections
English
Caution: Plug the power cables for the subwoofer and other audio/video components into
an AC outlet only after you complete all other
connections.
Basic connection example
Connect a subwoofer cable to the output jack of
your AV amplifier and to the INPUT jack of the
subwoofer.
Amplifier (
amplifiers may differ in appearance.
The rear panel of various
)
Connecting components and the subwoofer to AC power
After you complete a subwoofer connection, plug
the amplifier, other audio/video component, and
the subwoofer into an AC outlet of appropriate
voltage.
VOLTAGE SELECTOR
(For China, Korea, Asia and General models)
The voltage selector switch on the rear panel of
this unit must be set for your local main voltage
BEFORE plugging this unit into the AC main
supply. Voltages are 110–120/220–240 V AC, 50/
60 Hz.
Subwoofer
VOLUME
INPUT
POWER
ON
OFF
To AC outlet
INPUT
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Using the subwoofer
Rear panel
VOLUME
1
INPUT
POWER
ON
OFF
4
3
VOLUME
2
POWER
INPUT
ON
OFF
Pre-adjusting the subwoofer volume
Before you use the subwoofer, first adjust the volume balance between the subwoofer and the front
speakers by following the procedure below.
1.Set the VOLUME control to minimum (0).
2.Turn on the power to all other components.
3.Press the POWER switch to the ON position.
The power indicator on the rear panel lights up
green.
4.Play a source that contains low-frequency
sounds. Adjust the amplifier’s volume control to
the desired listening level.
5.Increase the volume gradually to adjust the vol-
ume balance between the subwoofer and the
front speakers. To enjoy natural bass sound,
keep the subwoofer volume at a level where it is
barely distinguishable from other speakers.
6.Adjust the volume of the entire sound system
using the amplifier’s volume control.
1Power indicator
Lights up GREEN when the POWER switch
(2) is turned ON; turns off when the POWER
switch is turned OFF.
2POWER switch
Press this switch to the ON position to turn on
the power to the subwoofer. When the power of
the subwoofer is on, the power indicator (1) on
the rear panel lights up green. Press this switch
again to set it to the OFF position to turn off the
power of the subwoofer.
3VOLUME control
Adjusts the volume level. Turn the control
clockwise to increase the volume, and counterclockwise to decrease the volume.
4INPUT terminal
Input terminal for line level signals from the
amplifier.
Note: It is recommended that you set
the VOLUME control about in the middle position when using the subwoofer
in a multi channel home theater system.
VOLUME
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Advanced Yamaha Active Servo Technology
English
The theory behind Yamaha Active Servo Technology is based on two factors: the Helmholtz resonator and negative-impedance drive. Active Servo
Processing speakers reproduce the bass frequencies through an “air woofer,” which is a port or
opening in the speaker’s cabinet.
This opening is used instead of, and performs the
functions of, a woofer in a conventionally designed
speaker system.
Thus, signals of low amplitude within the cabinet
can, according to Helmholtz resonance theory, be
output from this opening as waves of great amplitude if the size of the opening and the volume of
the cabinet are in proportion to satisfy a certain
ratio. In order to accomplish this, moreover, the
amplitudes within the cabinet must be both precise
and of sufficient power because these amplitudes
must overcome the “load” presented by the air in
the cabinet.
This problem is resolved by a design in which the
amplifier supplies special signals. If the electrical
resistance of the voice coil could be reduced to
zero, the movement of the speaker unit would
become linear with respect to signal voltage. To
accomplish this, the system utilizes a special negative-impedance output-drive amplifier that subtracts the output impedance of the amplifier.
By employing negative-impedance drive circuits,
the amplifier is able to generate precise, low-amplitude, low frequency waves with superior damping
characteristics.
These waves are then radiated from the cabinet
opening as high-amplitude signals. The system
can, therefore, by employing the negative-impedance output drive amplifier and a speaker cabinet
featuring a Helmholtz resonator, reproduce an
extremely wide range of frequencies with outstanding sound quality and low distortion.
The features described above combine to create the
fundamental structure of conventional Yamaha
Active Servo Technology.
Our new Active Servo Technology — Advanced
Yamaha Active Servo Technology — adopts
Advanced Negative Impedance Converter (ANIC)
circuits, which allow the conventional negative
impedance converter to dynamically vary to select
an optimum value for speaker impedance variation.
With these new ANIC circuits, Advanced Yamaha
Active Servo Technology provides a more stable
performance and improved sound pressure compared to conventional Yamaha Active Servo Technology, resulting in more natural and dynamic bass
reproduction.
High-amplitude
bass sound
Cabinet
Port
Advanced Negative
impedance Converter
Signals of low amplitude
Air woofer
(Helmholtz resonator)
Active Servo
Processing
Amplifier
Signals
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Troubleshooting
Refer to the chart below if the unit does not function properly. If the problem you are experiencing is not
listed, or if the instructions fail to help you resolve the problem, disconnect the power cord and contact your
authorized Yamaha dealer or service center.
Problem Cause Remedy
Power is not supplied even though the
POWER switch is set to the ON position.
No sound.
Sound level is too low.
The power plug is not securely
connected.
The VOLUME control is set to 0. Turn the VOLUME control to the
A subwoofer cable is not connected
securely.
You are playing a sound source that
includes inadequate bass frequencies.
The sound level has been diminished
by standing waves.
Turn the power switch OFF, then
connect the power plug securely.
right (clockwise).
Connect a subwoofer cable securely.
Play a sound source that includes
more bass frequencies.
Reposition the subwoofer, or break
up the parallel wall surface by
placing bookshelves or other large
objects along the wall.
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Specifications
English
YST-SW011
Type
.....Advanced Yamaha Active Servo Technology
Driver ................................. 20 cm (8") cone woofer
Magnetically shielded type
Output Power.................................................50 W
Dynamic Power.........................................100 W, 5
Input Impedance...............................................12 k
Frequency Response ................... 30 Hz – 200 Hz
Input Sensitivity............. 50 mV (50 Hz, 50 W/5
Power Supply
[U.S.A. and Canada models] .........AC 120 V, 60 Hz
[Australia model]............................ AC 240 V, 50 Hz
[China model] ....AC 110–120/220–240 V, 50/60 Hz
[Korea model] .... AC 110–120/220–240 V, 50/60 Hz
[U.K. and Europe models].............. AC 230 V, 50 Hz
[Asia model]....... AC 110–120/220–240 V, 50/60 Hz
[General model].. AC 110–120/220–240 V, 50/60 Hz
Power Consumption......................................45 W
Dimensions (W x H x D)
...............................290 mm x 360 mm x 303 mm
Ω)
Frequency characteristics
<YST-SW011>
100 dB
90
Ω
Ω
*This diagram does not depict actual frequency
response characteristic accurately.
Specifications are subject to change without notice.
80
70
60
50
40
20 50 100 200 500 Hz
Frequency response graph*
Weight............................................................ 10 kg
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This product mainly uses lead-free solder.
Cet appareil utilise principalement de la soudure sans plomb.
Dieses Produkt verwendet hauptsächlich bleifreies Lot.
I den här produkten används huvudsakligen blyfri lödmetall.
Questo prodotto usa principalmente lega per saldatura senza piombo.
Este producto utiliza principalmente soldadura sin plomo.
Dit product maakt hoofdzakelijk gebruik van loodvrij soldeer.
YAMAHA ELECTRONICS CORPORATION, USA
YAMAHA CANADA MUSIC LTD.
YAMAHA ELECTRONIK EUROPA G.m.b.H.
YAMAHA ELECTRONIQUE FRANCE S.A.
YAMAHA ELECTRONICS (UK) LTD.
YAMAHA SCANDINAVIA A.B.
YAMAHA MUSIC AUSTRALIA PTY, LTD.
135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA
J A WETTERGRENS GATA 1, BOX 30053, 400 43 VÄSTRA FRÖLUNDA, SWEDEN
6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A.
SIEMENSSTR. 22-34, 25462 RELLINGEN BEI HAMBURG, GERMANY
RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE
YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD18 7GQ, ENGLAND
17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA
10
2005 All rights reserved.
©
Printed in China WE87510
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