Yamaha NS-SW310 Le manuel du propriétaire

Marque: Yamaha

Modèle: NS-SW310

Catégorie: Amplificateurs audio

Taper: Le manuel du propriétaire

NS-SW310

Subwoofer

Caisson de grave

UCAB

OWNER’S MANUAL

MODE D’EMPLOI

i En

IMPORTANT SAFETY INSTRUCTIONS

1 Read these instructions.

2 Keep these instructions.

3 Heed all warnings.

4 Follow all instructions.

5 Do not use this apparatus near water.

6 Clean only with dry cloth.

7 Do not block any ventilation openings. Install in

accordance with the manufacturer’s instructions.

8 Do not install near any heat sources such as radiators,

heat registers, stoves, or other apparatus (including

amplifiers) that produce heat.

9 Do not defeat the safety purpose of the polarized or

grounding-type plug. A polarized plug has two blades

with one wider than the other. A grounding type plug

has two blades and a third grounding prong. The wide

blade or the third prong are provided for your safety. If

the provided plug does not fit into your outlet, consult

an electrician for replacement of the obsolete outlet.

10 Protect the power cord from being walked on or

pinched particularly at plugs, convenience receptacles,

and the point where they exit from the apparatus.

11 Only use attachments/accessories specified by the

manufacturer.

12 Use only with the cart, stand,

tripod, bracket, or table

specified by the manufacturer,

or sold with the apparatus.

When a cart is used, use

caution when moving the cart/

apparatus combination to

avoid injury from tip-over.

13 Unplug this apparatus during lightning storms or when

unused for long periods of time.

14 Refer all servicing to qualified service personnel.

Servicing is required when the apparatus has been

damaged in any way, such as power-supply cord or

plug is damaged, liquid has been spilled or objects

have fallen into the apparatus, the apparatus has been

exposed to rain or moisture, does not operate normally,

or has been dropped.

IMPORTANT

Please record the serial number of this system in the

space below.

Model:

Serial No.:

The serial number is located on the rear of the main

unit.

Retain this Owner’s Manual in a safe place for future

reference.

The lightning flash with arrowhead symbol,

within an equilateral triangle, is intended to

alert you to the presence of uninsulated

"dangerous voltage" within the product's

enclosure that may be of sufficient

magnitude to constitute a risk of electric

shock to persons.

The exclamation point within an equilateral

triangle is intended to alert you to the

presence of important operating and

maintenance (servicing) instructions in the

literature accompanying the appliance.

Explanation of Graphical Symbols

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We Want You Listening For A

Lifetime

YAMAHA and the Electronic Industries Association’s

Consumer Electronics Group want you to get the most out

of your equipment by playing it at a safe level. One that lets

the sound come through loud and clear without annoying

blaring or distortion – and, most importantly, without

affecting your sensitive hearing.

Since hearing damage from loud

sounds is often undetectable until it is

too late, YAMAHA and the

Electronic Industries Association’s

Consumer Electronics Group

recommend you to avoid prolonged

exposure from excessive volume

levels.

FCC INFORMATION (for US customers)

1 IMPORTANT NOTICE : DO NOT MODIFY

THIS UNIT!

This product, when installed as indicated in the

instructions contained in this manual, meets FCC

requirements. Modifications not expressly

approved by Yamaha may void your authority,

granted by the FCC, to use the product.

2 IMPORTANT : When connecting this product to

accessories and/or another product use only high

quality shielded cables. Cable/s supplied with this

product MUST be used. Follow all installation

instructions. Failure to follow instructions could

void your FCC authorization to use this product in

the USA.

3 NOTE : This product has been tested and found to

comply with the requirements listed in FCC

Regulations, Part 15 for Class “B” digital devices.

Compliance with these requirements provides a

reasonable level of assurance that your use of this

product in a residential environment will not result

in harmful interference with other electronic

devices.

This equipment generates/uses radio frequencies and,

if not installed and used according to the instructions

found in the users manual, may cause interference

harmful to the operation of other electronic devices.

Compliance with FCC regulations does not guarantee

that interference will not occur in all installations. If

this product is found to be the source of interference,

which can be determined by turning the unit “OFF”

and “ON”, please try to eliminate the problem by using

one of the following measures:

Relocate either this product or the device that is being

affected by the interference.

Utilize power outlets that are on different branch

(circuit breaker or fuse) circuits or install AC line filter/

In the case of radio or TV interference, relocate/

reorient the antenna. If the antenna lead-in is 300 ohm

ribbon lead, change the lead-in to coaxial type cable.

If these corrective measures do not produce

satisfactory results, please contact the local retailer

authorized to distribute this type of product. If you can

not locate the appropriate retailer, please contact

Yamaha Electronics Corp., U.S.A. 6660 Orangethorpe

Ave, Buena Park, CA 90620.

The above statements apply ONLY to those products

distributed by Yamaha Corporation of America or its

subsidiaries.

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.

[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.

iii En

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.

English

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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 110-120/220-240 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

FEATURES .....................................................................2

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 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.

CONTENTS

2 En

• This subwoofer 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

audio 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.

• 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.

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.

FEATURES

SUPPLIED ACCESSORIES

ATTACHING THE NON-

SKID PADS

Non-skid pads

English

3 En

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 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 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

( : subwoofer, : front speaker)

B C

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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.

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.)

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.

VOLUME control

Adjusts the volume level. Turn the control clockwise to

increase the volume, and counterclockwise to decrease

the volume.

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.

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.

VOLTAGE SELECTOR switch

(Asia and General models only)

If the preset setting of the switch is incorrect, set the

switch to the proper voltage (110-120/220-240 V) of

your area.

Consult your dealer if you are unsure of the correct

setting.

CONTROLS AND THEIR FUNCTIONS

Rear panel

(General model)

Front panel

Top 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

English

5 En

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.)

INPUT1 (FROM AMPLIFIER) terminals

Used to connect the subwoofer with the speaker

terminals of the amplifier.

(Refer to “CONNECTIONS” for details.)

INPUT2 terminals

Used to input line level signals from the amplifier.

(Refer to “CONNECTIONS” for details.)

INPUT3 (LFE) terminals

The HIGH CUT control has no effect on the

signals inputted to these terminals. (See Page 7 for

details)

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.

6 En

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

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

Subwoofer

Amplifier

To AC outlet

Mono pin cable

(not included)

Audio pin cable

(not included)

CONNECTIONS

English

7 En

■ Using two subwoofers

■ Connecting to the LFE (INPUT3) terminal(s)

If your amplifier can cut off high frequencies from the

signals for sending to the subwoofer, connect the amplifier

to the subwoofer's LFE (INPUT3) terminal(s).This will

bring you higher sound quality because the signal routing

in the subwoofer is shortened by passing the built-in HIGH

CUT circuit.

Amplifier

To AC outlet To AC outlet

Mono pin cable (not included)

Mono pin cable

(not included)

Subwoofer Subwoofer

CONNECTIONS

8 En

Select this method if your amplifier has no line output (pin jack) terminal(s).

If your amplifier has two sets of front speaker output terminals and both terminals can

output sound signals simultaneously.

• Connect one set of front speaker output terminals of the amplifier to the INPUT1 terminals of the subwoofer, and

connect the other set of front speaker output terminals of the amplifier to the front speakers.

• Set the amplifier so that both sets of front speaker output terminals output sound signals simultaneously.

Note

If your amplifier has only one set of front speaker output terminals, see page 9.

■ Using one subwoofer (with speaker cables)

■ Using two subwoofers (with speaker cables)

Connecting to speaker output terminals of the amplifier

Right front speaker

Subwoofer

To AC outlet

Left front speaker

Amplifier

Speaker

output

terminals

Amplifier

Right front speaker Left front speaker

Subwoofer

To AC outlet To AC outlet

Subwoofer

Speaker

output

terminals

CONNECTIONS

English

9 En

If your amplifier has only one set of front speaker output terminals.

Connect the speaker output terminals of the amplifier to the INPUT1 terminals of the subwoofer, and connect the

OUTPUT terminals of the subwoofer to the front speakers.

■ Using one subwoofer (with speaker cables)

■ Using two subwoofers (with speaker cables)

Right front speaker

Left front speaker

Subwoofer

Amplifier

Speaker output

terminals

To AC outlet

Right front speaker

Left front speaker

Subwoofer

Speaker output

terminals

To AC outlet To AC outlet

Amplifier

Subwoofer

CONNECTIONS

10 En

For connection, keep the speaker cables as short as

possible. Do not bundle or roll the excess cabling. If the

connections are faulty, no sound will be heard from the

subwoofer or the speakers, or both. Make sure that the +

and – polarity markings of the speaker cables are observed

and connected correctly. If these cables are reversed, the

sound will be unnatural and lack bass.

Caution

Do not let the bare speaker wires touch each other, because

this could damage the subwoofer or the amplifier, or both of

them.

■ Before connecting

Remove 10 mm (3/8”) of insulation from the ends of the

speaker cables.

■ How to connect

1 Loosen the terminal’s knob, as shown in the figure.

2 Insert the bare wire.

3 Release your finger from the tab to allow it to lock

securely on the cable's wire end.

4 Test the firmness of the connection by pulling lightly

on the cable at the terminal.

After all connections are completed, plug the subwoofer

and other audio/video components into AC outlets.

Connecting to the INPUT1/OUTPUT

terminals of the subwoofer

Good No Good

10 mm

(3/8 ”)

–

Red: positive (+)

Black: negative (

–)

Plug in the subwoofer to the AC outlet

To AC outlet

English

11 En

This function automatically switches the unit between standby and power-on mode.

The subwoofer automatically places itself in standby mode if it does not receive an input signal for 7 or 8 minutes. (The

power indicator lights red.)

When the subwoofer detects a bass signal input of below 200 Hz, it automatically places itself in power-on mode. (The

power indicator lights green.)

Notes

• This function is available only when the POWER switch and STANDBY/ON button are set to ON.

• Noise received from other appliances may extend the time period before the subwoofer places itself in standby

mode to more than 8 minutes.

1 Set the subwoofer to standby.

2 Change the AUTO STANDBY setting.

- LOW: Select this position to activate this function.

- HIGH: If this function does not operate with AUTO STANDBY switch set to LOW, select this position so that the

subwoofer detects input signals with a lower level and switches the power on automatically.

- OFF: Select this position to deactivate this function, for example, when the subwoofer switches the power on

unexpectedly by sensing noises from other appliances.

AUTOMATIC POWER-SWITCHING FUNCTION

Changing the AUTO STANDBY setting

12 En

Before using the subwoofer, adjust the subwoofer to obtain the optimum volume and tone balance between the subwoofer

and the front speakers by following the procedure described below.

1 Set the VOLUME control to minimum (0).

2 Turn on the power of all the other components.

3 Make sure that the POWER switch is set to the ON

position, then press the STANDBY/ON button to turn

on the subwoofer.

* The Power indicator lights up in green.

4 Play a source containing low-frequency components

and adjust the amplifier’s volume control to the desired

listening level.

5 Adjust the HIGH CUT control to the position where

the desired response can be obtained.

Normally, set the control to a level a little higher than

the front speaker’s rated minimum reproducible

frequency*.

* The front speaker’s rated minimum reproducible

frequency can be looked up in the speakers’ catalog

or owner’s manual.

6 Increase the volume gradually to adjust the volume

balance between the subwoofer and the front speakers.

Set the control to a level where you can obtain a little

more bass effect than when the subwoofer is not used.

If the desired response cannot be obtained, adjust the

HIGH CUT control and the VOLUME control again.

7 Set the PHASE switch to the position which gives you

the better bass sound.

Set the switch to the REV (reverse) position. If the

desired response cannot be obtained, set the switch to

the NORM (normal) position.

Notes

• Once the volume balance between the subwoofer and

the front speakers is adjusted, you can adjust the

volume of your entire sound system by using the

amplifier’s volume control.

However, if you change the front speakers to others,

you must make this adjustment again.

• For adjusting the VOLUME control, the HIGH CUT

control and the PHASE switch, refer to “Frequency

characteristics” on page 13.

ADJUSTING THE SUBWOOFER BEFORE USE

English

13 En

This subwoofer’s frequency characteristics

The figures below show the optimum adjustment of each control and the frequency characteristics when this subwoofer

is combined with a typical front speaker system.

■ EX.1 When combined with 10 cm (4”) or 13 cm (5”) acoustic suspension, 2-way system front speakers

■ EX.2 When combined with 20 cm (8”) or 25 cm (10”) acoustic suspension, 2-way system front

speakers

*This diagram does not depict actual frequency response characteristics.

Frequency characteristics

20 50 100 200 500Hz

HIGH CUT 50 Hz

HIGH CUT 100 Hz

HIGH CUT 150 Hz

20 50 100 200 500Hz

(80Hz) (REV)

Front

speaker

Frequency response graph*

20 50 100 200 500Hz

(70Hz) (REV)

Front

speaker

Frequency response graph*

14 En

In 1988, Yamaha brought to the marketplace speaker

systems utilizing YST (Yamaha Active Servo Technology)

to give powerful, high quality bass reproduction. This

technique uses a direct connection between the amplifier

and speaker, allowing accurate signal transmission and

precise speaker control.

As this technology uses speaker units controlled by the

negative impedance drive of the amplifier and resonance

generated between the speaker cabinet volume and port, it

creates more resonant energy (the “air woofer” concept)

than the standard bass reflex method. This allows for bass

reproduction from much smaller cabinets than was

previously possible.

Yamaha’s newly developed Advanced YST II adds many

refinements to Yamaha Active Servo Technology,

allowing better control of the forces driving the amplifier

and speaker. From the amplifier’s point of view, the

speaker impedance changes depending on the sound

frequency. Yamaha developed a new circuit design

combining negative-impedance and constant-current

drives, which provides a more stable performance and

clear bass reproduction, without any murkiness.

ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY II

High-amplitude

bass sound

Port

Cabinet

Advanced impedance

Converter

Active

Servo

Processing

Amplifier

Signals of low amplitude

Air woofer

(Helmholtz resonator)

Signals

English

15 En

Refer to the chart below if this unit does not function properly. If the problem you are experiencing is not listed below, or

if the instructions given below do not help, disconnect the power cord and contact an authorized YAMAHA dealer or

service center.

TROUBLESHOOTING

Problem Cause What to Do

Power is not supplied even though the

STANDBY/ON button is set to the ON

position.

The power plug is not securely

connected.

Connect it securely.

The POWER switch is set to the OFF

position.

Set the POWER switch to the ON

position.

No sound. The volume is set to minimum. Raise the volume up.

Speaker cables are not connected

securely.

Connect them securely.

Sound level is too low. Speaker cables are not connected

correctly.

Connect them correctly, that is L (left) to

L, R (right) to R, “+” to “+” and

“–” to “–”.

The PHASE switch is not set correctly. Set the PHASE switch to the other

position.

A source sound with little bass

frequency content is being played.

Play a source sound with bass

frequencies.

Set the HIGH CUT control to a higher

position.

It is influenced by standing waves. Reposition the subwoofer or break up

parallel surfaces by placing bookshelves,

etc., along the walls.

The subwoofer does not turn on

automatically.

The POWER switch is set to the OFF

position.

Set the POWER switch to the ON

position.

The STANDBY/ON button is set to the

STANDBY position.

Set the STANDBY/ON button to the ON

position.

The AUTO STANDBY switch is set to

the OFF position.

Set the AUTO STANDBY switch to the

“HIGH” or “LOW” position.

The level of input signal is too low. Set the AUTO STANDBY switch to the

“HIGH” position.

The subwoofer does not turn into the

standby mode automatically.

Noise generated from external

appliances etc., is activating the

subwoofer.

Move the subwoofer farther away from

such appliances, and/or reposition the

connected speaker cables.

Otherwise, set the AUTO STANDBY

switch to the “OFF” position.

The AUTO STANDBY switch is set to

the OFF position.

Set the AUTO STANDBY switch to the

“HIGH” or “LOW” position.

The subwoofer turns into the standby

mode unexpectedly.

The level of input signal is too low. Set the AUTO STANDBY switch to the

“HIGH” position.

The subwoofer turns on unexpectedly. Noise generated from external

appliances etc., is activating the

subwoofer.

Move the subwoofer farther away from

such appliances, and/or reposition the

connected speaker cables.

Otherwise, set the AUTO STANDBY

switch to the “OFF” position.

16 En

Type...... Advanced Yamaha Active Servo Technology II

Driver ..........................................20 cm (8”) cone woofer

Magnetic shielding type

Amplifier Output (100 Hz, 5 ohms, 10% THD)

................................................................................130 W

Frequency Response ............................... 26 Hz - 160 Hz

Power Supply

USA and Canada models...................AC 120V, 60 Hz

U.K. and Europe models....................AC 230V, 50 Hz

Australia model..................................AC 240V, 50 Hz

China model.......................................AC 220V, 50 Hz

Korea model.......................................AC 220V, 60 Hz

Asia and General models

...............................AC 110-120/220-240 V, 50/60 Hz

Power Consumption................................................67 W

Standby Power Consumption ...............................0.5 W

Dimensions (W × H × D)

...................................... 200 mm × 473 mm × 405 mm

(7-7/8” × 18-5/8” × 15-15/16”)

Weight ............................................ 14 kg (30 lbs. 14 oz.)

Please note that all specifications are subject to change

without notice.

Limited Guarantee for European Economic Area (EEA) and Switzerland

Thank you for having chosen a Yamaha product. In the unlikely event that your Yamaha product needs guarantee service, please contact the dealer from

whom it was purchased. If you experience any difficulty, please contact Yamaha representative office in your country. You can find full details on our

website (http://www.yamaha-hifi.com/ or http://www.yamaha-uk.com/ for U.K. resident).

The product is guaranteed to be free from defects in workmanship or materials for a period of two years from the date of the original purchase. Yamaha

undertakes, subject to the conditions listed below, to have the faulty product or any part(s) repaired, or replaced at Yamaha’s discretion, without any charge

for parts or labour. Yamaha reserves the right to replace a product with that of a similar kind and/or value and condition, where a model has been

discontinued or is considered uneconomic to repair.

Conditions

1. The original invoice or sales receipt (showing date of purchase, product code and dealer’s name) MUST accompany the defective product, along with a

statement detailing the fault. In the absence of this clear proof of purchase, Yamaha reserves the right to refuse to provide free of charge service and the

product may be returned at the customer’s expense.

2. The product MUST have been purchased from an AUTHORISED Yamaha dealer within the European Economic Area (EEA) or Switzerland.

3. The product must not have been the subject of any modifications or alterations, unless authorised in writing by Yamaha.

4. The following are excluded from this guarantee:

a. Periodic maintenance and repair or replacement of parts due to normal wear and tear.

b. Damage resulting from:

(1) Repairs performed by the customer himself or by an unauthorised third party.

(2) Inadequate packaging or mishandling, when the product is in transit from the customer. Please note that it is the customer’s responsibility to

ensure the product is adequately packaged when returning the product for repair.

(3) Misuse, including but not limited to (a) failure to use the product for its normal purpose or in accordance with Yamaha’s instructions on the

proper use, maintenance and storage, and (b) installation or use of the product in a manner inconsistent with the technical or safety standards in

force in the country where it is used.

(4) Accidents, lightning, water, fire, improper ventilation, battery leakage or any cause beyond Yamaha’s control.

(5) Defects of the system into which this product is incorporated and/or incompatibility with third party products.

(6) Use of a product imported into the EEA and/or Switzerland, not by Yamaha, where that product does not conform to the technical or safety

standards of the country of use and/or to the standard specification of a product sold by Yamaha in the EEA and/or Switzerland.

(7) Non AV (Audio Visual) related products.

(Products subject to “Yamaha AV Guarantee Statement” are defined in our website at http://www.yamaha-hifi.com/ or

http://www.yamaha-uk.com/ for U.K. resident.)

5. Where the guarantee differs between the country of purchase and the country of use of the product, the guarantee of the country of use shall apply.

6. Yamaha may not be held responsible for any losses or damages, whether direct, consequential or otherwise, save for the repair or replacement of the

product.

7. Please backup any custom settings or data, as Yamaha may not be held responsible for any alteration or loss to such settings or data.

8. This guarantee does not affect the consumer’s statutory rights under applicable national laws in force or the consumer’s rights against the dealer arising

from their sales/purchase contract.

SPECIFICATIONS

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