Yamaha Audio SW-3 User Manual

SW-3

Active Servo

Technology

Active Servo Processing Subwoofer System

Enceinte pour très basses fréquences de traitement à asservissement actif

Thank you for selecting thisYAMAHA Subwoofer System.
Nous vous remercions d’avoir porté votre choix sur cette enceinte

pour très basses fréquences YAMAHA.

OWNER’S MANUAL

MODE D’EMPLOI

SAFETY INSTRUCTIONS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF

ELECTRIC SHOCK, DO NOT REMOVE

COVER (OR BACK). NO USER-SERVICEABLE

PARTS INSIDE. REFER SERVICING TO

QUALIFIED SERVICE PERSONNEL.

Explanation of Graphical Symbols

•

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.

WARNING

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

1 Read Instructions – All the safety and operating

instructions should be read before the unit is operated.

2 Retain Instructions – The safety and operating instructions

should be retained for future reference.

3 Heed Warnings – All warnings on the unit and in the

operating instructions should be adhered to.

4 Follow Instructions – All operating and other instructions

should be followed.

5 Water and Moisture – The unit should not be used near

water – for example, near a bathtub, washbowl, kitchen
sink, laundry tub, in a wet basement, or near a swimming
pool, etc.

6 Carts and Stands – The unit should be used only with a

cart or stand that is recommended by the manufacturer.

6A A unit and cart combination should

be moved with care. Quick stops,
excessive force, and uneven
surfaces may cause the unit and
cart combination to overturn.

7 Wall or Ceiling Mounting – The unit should be mounted to

a wall or ceiling only as recommended by the
manufacturer.

8 Ventilation – The unit should be situated so that its

location or position does not interfere with its proper
ventilation. For example, the unit should not be situated
on a bed, sofa, rug, or similar surface, that may block the
ventilation openings; or placed in a built-in installation,
such as a bookcase or cabinet that may impede the flow
of air through the ventilation openings.

9 Heat – The unit should be situated away from heat

sources such as radiators, stoves, or other appliances that
produce heat.

10 Power Sources – The unit should be connected to a power

supply only of the type described in the operating
instructions or as marked on the unit.

11 Power-Cord Protection – Power-supply cords should be

routed so that they are not likely to be walked on or
pinched by items placed upon or against them, paying
particular attention to cords at plugs, convenience
receptacles, and the point where they exit from the unit.

12 Cleaning – The unit should be cleaned only as

recommended by the manufacturer.

13 Nonuse Periods – The power cord of the unit should be

unplugged from the outlet when left unused for a long
period of time.

14 Object and Liquid Entry – Care should be taken so that

objects do not fall into and liquids are not spilled into the
inside of the unit.

15 Damage Requiring Service – The unit should be serviced

by qualified service personnel when:

A. The power-supply cord or the plug has been damaged;

or

B. Objects have fallen, or liquid has been spilled into the unit;

or

C. The unit has been exposed to rain; or
D. The unit does not appear to operate normally or exhibits a

marked change in performance; or

E. The unit has been dropped, or the cabinet damaged.
16 Servicing – The user should not attempt to service the unit

beyond those means described in the operating
instructions. All other servicing should be referred to
qualified service personnel.

17 Power Lines – An outdoor antenna should be located

away from power lines.

18 Grounding or Polarization – Precautions should be taken

so that the grounding or polarization is not defeated.

2

FCC INFORMATION (for US customers only)

English

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/s.

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.

We Want You Listening For A Lifetime (for US customers only)

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.

3

CONTENTS

Caution ...........................................................................2

Features .........................................................................5

Placement ......................................................................5

Connections ...................................................................6

Adjusting volume ..........................................................10

Active Servo Technology ..............................................12

Troubleshooting ............................................................13

Specifications ...............................................................13

Controls and their functions ............................................9

CAUTION: READ THIS BEFORE OPERATING YOUR UNIT.

1. To assure the finest performance, please read this manual

carefully. Keep it in a safe place for future reference.

2. 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 the unit to rain or
water.

3. Never open the cabinet. If something drops into the set, contact

your dealer.

4. 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 wire itself.

5. Do not attempt to clean the unit with chemical solvents; this might

damage the finish. Use a clean, dry cloth.

6. Be sure to read the “TROUBLESHOOTING” section regarding

common operating errors before concluding that the unit is faulty.

IMPORTANT

Please record the serial number of this unit in the space below.
Serial No.:
The serial number is located on the rear of the unit.

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

WARNING

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

CAUTION (FOR CANADA MODEL)

TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT AND FULLY INSERT.

FOR CANADIAN CUSTOMER

THIS CLASS B DIGITAL APPARATUS MEETS ALL
REQUIREMENTS OF THE CANADIAN INTERFERENCE-CAUSING
EQUIPMENT REGULATIONS.

7. When not planning to use this unit for long periods of time (ie.,

vacation, etc.), disconnect the AC power plug from the wall outlet.

8. To prevent lightning damage, disconnect the AC power plug when

there is an electrical storm.

9. Since this unit has a built-in power amplifier, heat will radiate from

the rear panel. Therefore, place the unit apart from the walls,
allowing a space of at least 20 cm (7-7/8”) above, behind and on
the both sides of the unit. Also, do not position with the rear panel
facing down on the floor or other surface.

10.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.

11.As this speaker contains strong magnet, avoid placing watches,

magnetic tapes, etc. near this unit. Also, placing the speaker near
a TV set may impair picture color. If this happens, move the TV
set away from the speaker.

12.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.

13.This unit has a port called “air woofer” which is for reproducing a

super-bass sound.
Be careful not to put a hand or some objects into the port,
otherwise it may give you an electric shock or give this unit a
damage, or cause a fire.

The apparatus is not disconnected from the AC power
source as long as it is connected to the wall outlet, even if
the apparatus itself is turned off.

4

FEATURES

A

B

C

English

This subwoofer system employs YAMAHA Active Servo

•

Technology which YAMAHA developed for reproducing
higher quality super-bass sound. (Refer to page 12 for
details on Active Servo Technology.)
This unit does not only enhance bass frequency response of
sound output in your audio system, but, by reproducing the
bass frequencies, the subwoofer permits your existing
amplifier and speakers to operate under less strenuous
conditions, improving overall system performance.

PLACEMENT

This unit can be added easily to your existing audio system

•

by connecting to either the speaker terminals or the line
output (pin jack) terminals of the amplifier.
For the effective use of this unit, this unit’s super-bass

•

sound must be matched to the sounds of your main
speakers. Therefore, this unit employs a continuously
variable high frequency cut-off point (HIGH CUT) control.
A newly employed AUTO POWER ON/OFF switch saves

•

you the trouble of pressing the POWER switch when turning
the power on and off.

( : subwoofer, : main speaker)

If using one subwoofer, it is recommended to place it on the
outside of either the right or the left main speaker. (See fig.

.) If using two subwoofers, it is recommended to place them

A

on the outside of each main 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 die because the sound from it and the sound
reflected by the wall may cancel. To prevent this, face the
subwoofer system obliquely to the wall as shown in fig. or

.

B

One subwoofer will have a good effect on your audio system,
however, the use of two subwoofers is recommended to obtain
more presence.

Note

There may be a case that you cannot obtain enough super­bass sounds from this unit when listening at the middle of the
room. This is because “standing waves” have developed
between two parallel walls and the bass sounds are being
canceled.
In such a case, face the unit obliquely to the wall. It also may
be necessary to break up the parallel surfaces by placing
bookshelves etc. along the walls.

C

B

A

Use the rubber pads

Put the provided rubber pads at the four corners on the bottom
of this unit to prevent this unit moving due to vibrations etc.

5

CONNECTIONS

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

ONOFF

AUTO
POWER

HIGH CUT

STANDBY

-

RED

ON

-

GREEN

VOLUME

150 Hz

010

50 Hz

POWER

OFF

ON

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

ONOFF

AUTO
POWER

HIGH CUT

STANDBY

-

RED

ON

-

GREEN

VOLUME

150 Hz

010

50 Hz

POWER

OFF

ON

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

ONOFF

AUTO
POWER

HIGH CUT

STANDBY

-

RED

ON

-

GREEN

VOLUME

150 Hz

010

50 Hz

POWER

OFF

ON

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

• Before attempting to make any connections to or from this unit, be sure to first switch OFF the power to this unit and to any other
components to which connections are being made.

• When making connections between this unit and other components, be sure all connections are made correctly and consistently,
that is to say L (left) to L, R (right) to R, “+” to “+” and “–” to “–”.

• This unit can be connected to either the speaker terminals or the line output (pin jack) terminals of the amplifier. Choose one of
the ways shown below which is suitable for your audio system. Also, refer to the owner’s manual for each component to be
connected to this unit.

CONNECTING TO SPEAKER TERMINALS OF THE AMPLIFIER

Disconnect your main speakers from the amplifier and connect them to this unit.

To connect one unit only

Amplifier

This unit

To AC outlet

To connect two units

This unit This unit

Left speakerRight speaker

Amplifier

To AC outletTo AC outlet

Left speakerRight speaker

6

If your amplifier has two sets of speaker terminals

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT
TO SPEAKERS

ONOFF

AUTO
POWER

HIGH CUT

STANDBY

-

RED

ON

-

GREEN

VOLUME

150 Hz

010

50 Hz

POWER

OFF

ON

AB

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

1

2

3

English

Amplifier

(Both “A” and “B” outputs
must be ON.)

This unit

To AC outlet

Connecting to this unit’s OUTPUT/INPUT terminals

For connections, cut the speaker wires as short as possible. If
the connections are faulty, no sound will be heard from the
speakers. Make sure that the polarity of the speaker wires is
correct, that is, + and – markings are observed. If these wires
are reversed, the sound will be unnatural and will lack bass.

Do not let the bare speaker wires touch each other and do
not let them touch the metal parts of this unit as this could
damage this unit, your amplifier and/or speakers.

* Banana Plug connections are also possible. Simply insert

the Banana Plug connector into the corresponding terminal.

Left speakerRight speaker

How to Connect:

Red: positive (+)
Black: negative (–)

1 Unscrew the knob.
2 Insert the bare wire.

[Remove approx. 5mm
(1/4”) insulation from
the speaker wires.]

3 Tighten the knob and

secure the wire.

7

CONNECTING TO LINE OUTPUT (PIN JACK) TERMINALS OF THE AMPLIFIER

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT
TO SPEAKERS

ONOFF

AUTO
POWER

HIGH CUT

STANDBY

-

RED

ON

-

GREEN

VOLUME

150 Hz

010

50 Hz

POWER

OFF

ON

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

PRE OUT

LOW PASS

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

ONOFF

AUTO
POWER

HIGH CUT

STANDBY

-

RED

ON

-

GREEN

VOLUME

150 Hz

010

50 Hz

POWER

OFF

ON

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

ONOFF

AUTO
POWER

HIGH CUT

STANDBY

-

RED

ON

-

GREEN

VOLUME

150 Hz

010

50 Hz

POWER

OFF

ON

PRE OUT

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

• Leave the main speakers connected to the amplifier.

• Amplifier line output terminals are generally labeled PRE OUT or SUBWOOFER OUT.
* For PRE OUT terminal connection, the amplifier must possess at least two sets of PRE OUT terminals. With some amplifiers

with only one set of PRE OUT terminals, connection can result in no sound from the main left and right speakers. In this case,
select the method of connecting to the speaker terminals.

• To connect with a YAMAHA DSP amplifier, connect the LOW PASS (or SUBWOOFER etc.) terminal on the rear of the DSP
amplifier to either the left (L) or right (R) INPUT 2 terminal.

To connect one unit only

Amplifier

To connect two units

This unit

To AC outlet

<YAMAHA DSP amplifier>

<Amplifier>

Right speakerLeft speaker

Pin plug cords

Right speakerLeft speaker

This unit This unit

To AC outlet To AC outlet

Notes

• When connected to line output terminals of the amplifier, other speakers should not be connected to the OUTPUT terminals on
the rear panel of this unit. If connected, they will not produce sound.

• When connecting to a monaural line output terminal of the amplifier, connect to either the left or right INPUT 2 terminal.

8

Amplifier

Pin plug cords

CONTROLS AND THEIR FUNCTIONS

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

ON OFF

AUTO
POWER

POWER HIGH CUT

STANDBY

-

RED

ON

-

GREEN

VOLUME

I50 Hz

0I0

50 Hz

OFF

ON

INPUT1INPUT2

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

OFF

AUTO

POWER

POWER HIGH CUT

STANDBY

-

RED

ON

-

GREEN

VOLUME

I50 Hz

0I0

50 Hz

ON

1 32

6 7 854

OFF

ON

I50 Hz50 Hz

60

70

80

90

I00

II0

I20

I30

I40

English

1 POWER indicator

Lights in green when the POWER switch is turned ON,
and goes off when turned OFF.

* STANDBY mode:

If the AUTO POWER ON/OFF switch on the rear panel
is set to ON, this indicator lights in red when no signal
is input to this unit.

2 AUTO POWER ON/OFF switch

By setting this switch to the ON position, this unit’s
automatic power ON/OFF function operates as described
below. If you do not need this function, set to the OFF
position.
* Make sure to change the setting of this switch only when

the power of this unit is off.

Automatic power ON/OFF function

When you play a source, the power to this unit turns on
automatically by sensing audio signals input to this unit.
The power turns off automatically if the source being
played is stopped or the input signal is cut off for several
minutes.
* This function will operate responding to a certain level of

input signal. Increase the output level on the input
source if the automatic power ON function will not
operate, or decrease the level if the automatic power
OFF function will not operate.

* There may be a case that the power turns on

unexpectedly by sensing noise from other appliances. If
it occurs, set the AUTO POWER ON/OFF switch to the
OFF position.

This function is available only when the power of this
unit is on (by setting the POWER switch (

4) to “on”).

3 INPUT1 (FROM AMPLIFIER) terminals

Used to connect this unit with the speaker terminals of the
amplifier.

4 POWER switch

Turns the power of this unit ON and OFF whenever
pressed. When this switch is turned ON, the POWER
indicator above the POWER switch lights up.

5 HIGH CUT control

Adjusts the high frequency cut off point.
Frequencies higher than the frequency selected by this
control are all cut off (and not output).

* One graduation of this control represents 10 Hz.

6 VOLUME control

Adjusts the volume level.

7 INPUT2 terminals

Used to input line level signals from the amplifier.

8 OUTPUT (TO SPEAKERS) terminals

Can be used for connections with the main speakers.
These terminals send signals output from the amplifier to
the main speakers directly.

9

ADJUSTING V OLUME

POWER HIGH CUT VOLUME

I50 Hz

0I0

50 Hz

OFF

ON

2 5 1, 4

1 Set the VOLUME control to minimum.
2 Turn on the power supply to all the components.
3 Play any source and adjust the amplifier’s volume control

to the desired listening level.

4 Turn up the VOLUME control gradually to adjust the

volume balance between this unit and the main speakers.

5 Adjust the HIGH CUT control to the position where the

desired response can be obtained.

Notes

Once the volume balance between this unit and the main

•

speakers is adjusted, you can adjust the volume of your
whole sound system by using only the amplifier’s volume
control.
For adjusting the VOLUME control and the HIGH CUT

•

control, refer to “FREQUENCY CHARACTERISTICS” on
the right hand.

For effective adjustment of the HIGH CUT control

First set this control at about the main speakers’ rated
minimum reproduceable frequency. Then turn up the
VOLUME control gradually and set it at a level where you can
obtain a little more bass effect than when this unit is not used.
On the basis of this setting, if desired, adjust the VOLUME
control and the HIGH CUT control again.
* The main speakers’ minimum reproduceable frequency can

be looked up in the speakers’ catalog or owner’s manual.

10

VOLUME

0I0

HIGH CUT

I50 Hz50 Hz

VOLUME

0I0

HIGH CUT

I50 Hz50 Hz

20 50 100 200 500Hz

40

50

60

70

80

90

dB

HIGH CUT 50 Hz

HIGH CUT 100 Hz

HIGH CUT
150 Hz

20 50 100 200 500Hz

40

50

60

70

80

90

dB

SW-3

20 50 100 200 500Hz

40

50

60

70

80

90

dB

SW-3

FREQUENCY CHARACTERISTICS

Adjustment of the VOLUME control and the HIGH CUT control should be changed according to the main speakers, listening
condition, source, etc.
Following figures show the optimum adjustment of each control and the frequency characteristics when this unit is combined with a
typical speaker system.

This unit’s frequency characteristics

English

When combined with a 4” or 5” acoustic

•

suspension, 2 way system

When combined with a 6” or 8” acoustic

•

suspension, 2 way system

Main
speaker’s
response

Main
speaker’s
response

11

ACTIVE SERVO TECHNOLOGY

The theory of Active Servo Technology is based upon two
major factors, the Helmholtz resonator and negative­impedance 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 the Helmholtz resonance theory, be output
from this opening as waves of great amplitude if the
design is such that the size of the opening and the volume
of the cabinet are in the correct 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 that exists within the cabinet.

High­amplitude
bass
sound

Cabinet

Air woofer
(Helmholtz resonator)

Thus it is this problem that is resolved through the
employment of a design in which the amplifier functions to
supply 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, and,
to accomplish this, a special negative-impedance output-drive
amplifier for subtracting output impedance of the amplifier is
used.
By employing negative-impedance drive circuits, the amplifier
is able to generate precise, low-amplitude low-frequency
waves with superior damping characteristics, and these
waves are then radiated from the cabinet opening as high­amplitude signals. The system can, therefore, by employing
the negative-impedance output drive amplifier and a speaker
cabinet with the Helmholtz resonator, reproduce an extremely
wide range of frequencies with amazing sound quality and
less distortion.
The features described above, then, are combined to be the
fundamental structure of the Active Servo Technology.

Port

Negative-impedance

Signals of low amplitude

output drive

REMOVING THE FRONT GRILLE

The front grille is fastened to the enclosure at four points,
and can be removed if desired. To remove the grille, first
hold the bottom of the grille and unfasten the lower part of
the grille by pulling it gently, and then hold both sides of the
grille and slowly pull straight away from the speaker. To
reattach, line up the four pegs on the inside surface of the
grille with the four corresponding holes on the speaker and
push gently.

Active Servo
Processing Amplifier

Note

When the grille is removed, take care not to touch the
speaker unit with your hands or to exert excessive force
with tools.

Signals

12

TROUBLESHOOTING

If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple
measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and
contact your authorized YAMAHA dealer or service center for help.

English

SYMPTOM

Power is not supplied even though the
POWER switch is ON.

No sound.

Sound level is too low.

Automatic power ON function will not
work.

Automatic power OFF function will work
unexpectedly.

Automatic power ON function will work
unexpectedly.

CAUSE

The power plug is not securely connected.

The VOLUME control is set to 0.
Speaker cables are not connected securely.
Speaker cables are connected incorrectly.

Setting of the PHASE switch is not proper.
A source sound with few bass frequencies is

played.

It is influenced by standing waves.

The POWER switch is turned off.
The level of input signal is too low.

The level of input signal is too low.

An influence of noise generated from
external digital equipment etc.

REMEDY

Connect it securely.

Turn the VOLUME control to right.
Connect them securely.
Connect them correctly, that is to say L (left)

to L, R (right) to R, “+” to “+” and “–” to “–”.
Set the switch to the other position.
Play a source sound with bass frequencies.

Set the HIGH CUT control to a higher
position. (Turn the knob to right.)

Re-position the subwoofer or break up the
parallel surface by placing bookshelves etc.
along the walls.

Turn the POWER switch on.
Increase the level of input signal on the

source.
Increase the level of input signal on the

source.
Move this unit farther away from such

equipment and/or change the position of
connected speaker cables.

Otherwise, do not use the automatic power
ON function of this unit.

SPECIFICATIONS

Type.....................Active Servo Processing Subwoofer System

Speaker Unit..............................25 cm (9-13/16”) cone woofer

Frequency Response .........................25 Hz–200 Hz (–10 dB)

High-Cut Filter..............................50 Hz–150 Hz (–24 dB/oct.)

Impedance

INPUT 1 .................................................................4.7 k-ohms

INPUT 2 ..................................................................10 k-ohms

Amplifier Output.................................................100W/5 ohms

Power Supply..................................................AC 120V, 60 Hz

Power Consumption.......................................................130W

Dimensions (W x H x D) ............368 mm x 460 mm x 386 mm

(14-1/2” x 18-1/8” x 15-3/16”)

Weight.....................................................17.4 kg (38 lbs. 4 oz.)

Accessorie ................................................Rubber pads (1 set)

* Please note that all specifications are subject to change

without notice.

13

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 WD1 7JS, 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

VV96430 Printed in Malaysia

documentation manual, user maintenance, brochure, user reference, pdf manual

This file has been downloaded from:

User Manual and User Guide for many equipments like mobile phones, photo cameras, monther board, monitors, software, tv, dvd, and othes..

Manual users, user manuals, user guide manual, owners manual, instruction manual, manual owner, manual owner's, manual guide,

manual operation, operating manual, user's manual, operating instructions, manual operators, manual operator, manual product,