Instruction manual and user guide for
Yamaha NS-SW700

NS-SW700

Subwoofer
Caisson de grave

G

OWNER’S MANUAL

MODE D’EMPLOI

BEDIENUNGSANLEITUNG

BRUKSANVISNING

MANUALE DI ISTRUZIONI

MANUAL DE INSTRUCCIONES

GEBRUIKSAANWIJZING

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Thank you for selecting this YAMAHA product.

Please read the following operating precautions before use.
YAMAHA will not be held responsible for any damage
and/or injury caused by not

following the cautions below.

• 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 something drops 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 or 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 equipment. 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 as a result of vibrations and breaks,
it may cause bodily injury.

A burning candle etc.

If the candle falls as a result of vibration, it may cause
fire and bodily injury.

A vessel containing water

If the vessel falls as a result of vibration 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 material, such as

dripping water. It might cause 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 as a result of 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 space around this
unit or avoiding excess humidification. Condensation
might cause 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 output 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
output, 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 distortion (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 speaker 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.

• Install this unit near the wall outlet and where the AC

power plug can be reached easily.

• 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.

CAUTION: Read this before operating your unit

WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPLIANCE TO
RAIN OR MOISTURE.

Be sure to allow spaces of at least 20 cm above, behind
and on both sides of the unit.

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• VOLTAGE SELECTOR

(Asia and General models only)
The voltage selector switch on the rear panel of this
unit must be set to your local main voltage BEFORE
plugging this unit into the AC main supply. Voltages
are 110/120/220/230-240 V AC, 50/60 Hz.

For U.K. customers

If the socket outlets in the home are not suitable for the
plug supplied with this appliance, it should be cut off and
an appropriate 3 pin plug fitted. For details, refer to the
instructions described below.

Note: The plug severed from the mains lead must be
destroyed, as a plug with bared flexible cord is hazardous
if engaged in a live socket outlet.

SPECIAL INSTRUCTIONS FOR U.K. MODEL

This unit is not disconnected from the AC power
source as long as it is connected to the wall outlet, even
if this unit itself is turned off. In this state, this unit is
designed to consume a very small quantity of power.

This unit features a magnetically shielded design,
however, 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.

IMPORTANT:
THE WIRES IN MAINS LEAD ARE COLOURED
IN ACCORDANCE WITH THE FOLLOWING
CODE:
Blue: NEUTRAL
Brown: LIVE
As the colours of the wires in the mains lead of this
apparatus may not correspond with the coloured
markings identifying the terminals in your plug,
proceed as follows: The wire which is coloured BLUE
must be connected to the terminal which is marked
with the letter N or coloured BLACK. The wire which
is coloured BROWN must be connected to the
terminal which is marked with the letter L or coloured
RED. Make sure that neither wire is connected to the
earth terminal of a three pin plug.

For Canadian Customers
To prevent electric shock, match wide blade of plug to
wide slot and fully insert.

This Class B digital apparatus complies with Canadian
ICES-003.

Information for Users on Collection and Disposal of
Old Equipment

This symbol on the products,
packaging, and/or accompanying
documents means that used electrical
and electronic products should not be
mixed with general household waste.

For proper treatment, recovery and
recycling of old products, please take
them to applicable collection points, in
accordance with your national
legislation and the Directives 2002/96/
EC.

By disposing of these products
correctly, you will help to save valuable
resources and prevent any potential
negative effects on human health and
the environment which could otherwise
arise from inappropriate waste
handling.

For more information about collection
and recycling of old products, please
contact your local municipality, your
waste disposal service or the point of
sale where you purchased the items.

[For business users in the European
Union]

If you wish to discard electrical and
electronic equipment, please contact
your dealer or supplier for further
information.

[Information on Disposal in other
Countries outside the European Union]

This symbol is only valid in the
European Union. If you wish to discard
these items, please contact your local
authorities or dealer and ask for the
correct method of disposal.

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FEATURES.......................................................................... 1

SUPPLIED ACCESSORIES................................................ 2

ATTACHING THE NON-SKID PADS .............................. 2

PLACEMENT...................................................................... 3

CONTROLS AND THEIR FUNCTIONS........................... 4

CONNECTIONS.................................................................. 6

Connecting to line output (pin jack) terminals
of the amplifier ...................................................... 6

Connecting to speaker output terminals of the
amplifier ................................................................ 8

Connecting to the INPUT1/OUTPUT terminals
of the subwoofer ...................................................... 10
Plug in the subwoofer to the AC outlet ................... 10

AUTOMATIC POWER-SWITCHING FUNCTION........ 11

Changing the AUTO STANDBY setting................. 11

ADJUSTING THE SUBWOOFER BEFORE USE........... 12

Frequency characteristics ......................................... 13

ADVANCED YAMAHA ACTIVE SERVO
TECHNOLOGY II ............................................................. 14

TROUBLESHOOTING ..................................................... 15

SPECIFICATIONS ............................................................ 16

• This subwoofer system employs Advanced Yamaha

Active Servo Technology II, which Yamaha has
developed for the production of higher quality, super-
bass sound. (Refer to page 14 for details on Advanced
Yamaha Active Servo Technology II.) This super-bass
sound adds a more realistic, theater-in-the-home effect
to your stereo system.

• This subwoofer can be easily added to your existing

audio system by connecting to either the speaker
terminals or the line output (pin jack) terminals of the
amplifier.

• For effective use of the subwoofer, the subwoofer’s

super-bass sound should be matched to the sounds of
your front speakers. You can create the best sound
quality for various listening conditions by using the
HIGH CUT control and the PHASE switch.

• The Automatic power-switching function saves you the

trouble of pressing the STANDBY/ON button to turn the
power on and off.

• You can select a bass effect suitable for the source by

using the B.A.S.S. button.

• 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.

CONTENTS

1

2

FEATURES

QD-Bass Technology
QD-Bass (Quatre Dispersion Bass) technology is a
Yamaha unique technology to radiate the sound
efficiently in four horizontal directions.

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After unpacking, check that the following parts are
contained.

To enjoy the high sound quality, stabilize the subwoofer
using the non-skid pads.

Attach the provided non-skid pads in the four corners of the
underside of the subwoofer to prevent the subwoofer from
moving as a result of vibration, etc.

SUPPLIED ACCESSORIES

ATTACHING THE NON-

SKID PADS

Non-skid pads

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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 recommended to

place them on the outside of each front speaker. (See
fig.

.) The placement shown in fig.

is also possible,

however, if the subwoofer system is placed directly facing
the wall, the bass effect may suffer due to cancellation of
direct and reflected sounds. To prevent this from
happening, place the subwoofer system at an angle, as in
fig.

or

.

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 developed between two parallel walls and
cancel the bass sounds.

In such a case, place the subwoofer at an oblique angle
to the wall. It also may be necessary to break up the
parallel surfaces by placing bookshelves, etc. along the
walls.

PLACEMENT

A

B

C

(

: subwoofer,

: front speaker)

A

B

C

A

B

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1 B.A.S.S. (Bass Action Selector System) button

When this button is pressed in to the MUSIC position,
the bass sound in audio software is well reproduced.
By pressing the button again so that it pops out at the
MOVIE position, the bass sound in video software is
well reproduced.

2 HIGH CUT control

Adjusts the high frequency cut off point.
Frequencies higher than the frequency selected by this
control are all cut off (and no output).
* One graduation of this control represents 10 Hz.

3 STANDBY/ON button

Press this button to turn on the power when the
POWER switch is set in the ON position. (The power
indicator lights up in green.)
Press again to set the subwoofer in the standby mode.
(The power indicator goes off.)

4 Power indicator

Lights up in green while the subwoofer is on.
Lights up in red while the subwoofer is set in the
standby mode by the operation of the automatic power-
switching function.
Goes off when the subwoofer is set in the standby
mode.

5 VOLUME control

Adjusts the volume level. Turn the control clockwise to
increase the volume, and counterclockwise to decrease
the volume.

6 VOLTAGE SELECTOR switch

(Asia and General models only)
If the preset setting of the switch is incorrect, set the
switch to the proper voltage (110/120/220/230-240V)
of your area.
Consult your dealer if you are unsure of the correct
setting.

CONTROLS AND THEIR FUNCTIONS

Rear panel

(General model)

Top panel

Front panel

Standby mode

The subwoofer is still using a small amount of
power in this mode.

WARNING

Be sure to unplug the subwoofer before setting the
VOLTAGE SELECTOR switch correctly.

CONTROLS AND THEIR FUNCTIONS

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7 POWER switch

Set this switch to the ON position to use the subwoofer.
In this state, you can turn on the subwoofer or turn the
subwoofer into the standby mode by pressing the
STANDBY/ON button. Set this switch to the OFF
position to completely cut off the subwoofer’s power
supply from the AC outlet.

8 OUTPUT (TO SPEAKERS) terminals

Can be used for connecting to the main speakers.
Signals from the INPUT1 terminals are sent to these
terminals.
(Refer to “CONNECTIONS” for details.)

9 INPUT1 (FROM AMPLIFIER) terminals

Used to connect the subwoofer with the speaker
terminals of the amplifier.
(Refer to “CONNECTIONS” for details.

0 INPUT2 terminals

Used to input line level signals from the amplifier.
(Refer to “CONNECTIONS” for details.)

A INPUT3 (LFE) terminals

The HIGH CUT control 2 has no effect on the signals
inputted to these terminals. (See Page 7 for details)

B AUTO STANDBY (HIGH/LOW/OFF) switch

This switch is originally set to the OFF position. By
setting this switch to the HIGH or LOW position, the
subwoofer’s automatic power-switching function
operates, as described on page 11. If you do not need
this function, leave this switch in the OFF position.
* Make sure to change the setting of this switch only

when the subwoofer is set in the standby mode by
pressing the STANDBY/ON button.

C PHASE switch

This switch is to be set to the REV (reverse) position.
However, depending on your speaker system or
listening condition, there may be a case when better
sound quality is obtained by setting this switch to the
NORM (normal) position. Select the best position by
ear.

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Choose one of the following two connecting methods most suitable for your audio system.

■

Choose

(pages 6-7) if your amplifier has line output (pin jack) terminal(s)

■

Choose

(pages 8-9) if your amplifier has no line output (pin jack) terminal

(s)

Caution: Unplug the subwoofer and other audio/video components before making
connections.

Notes
• All connections must be correct, that is to say L (left) to L, R (right) to R, “+” to “+” and “–” to “–”. Also, refer

to the owner’s manual of your component to be connected to the subwoofer.

• After all connections are completed, plug in the subwoofer and other audio/video components.

• To connect to an amplifier (or AV receiver), connect the SUBWOOFER (or LOW PASS, etc.) terminal on the rear of

the amplifier (or AV receiver) to the

/MONO INPUT2 terminal of the subwoofer.

• When connecting the subwoofer to the SPLIT SUBWOOFER terminals on the rear of the amplifier, be sure to connect

the

/MONO INPUT2 terminal to the “L” side and the

INPUT2 terminal to the “R” side of the SPLIT

SUBWOOFER terminals.

Notes
• Some amplifiers have line output terminals labeled PRE OUT. When you connect the subwoofer to the PRE OUT

terminals of the amplifier, make sure that the amplifier has at least two sets of PRE OUT terminals. If the
amplifier has only one set of PRE OUT terminals, do not connect the subwoofer to the PRE OUT terminals.
Instead, connect the subwoofer to the speaker output terminals of the amplifier. (Refer to pages 8-9.)

• When connecting to a monaural line output terminal of the amplifier, connect the

/MONO INPUT2 terminal.

• When connecting to line output terminals of the amplifier, other speakers should not be connected to the

OUTPUT terminals on the rear panel of the subwoofer. If connected, they will not produce sound.

■

Using one subwoofer

CONNECTIONS

1

2

Connecting to line output (pin jack) terminals of the amplifier

1

L

L

R

L

Subwoofer

Amplifier

To AC outlet

Mono pin cable

(not included)

Audio pin cable

(not included)