Yamaha Audio YST-SW300 User Manual

YST-SW300

Active Servo

Technology

Active Servo Processing Subwoofer System

Enceinte pour très basses fréquences de traitement à asservissement actif

Thank you for selecting this YAMAHA 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 ...........................................................................4

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

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

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

Adjusting volume ..........................................................13

Active Servo Technology ..............................................15

Troubleshooting ............................................................16

Specifications ...............................................................16

Controls and their functions ..........................................11

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.

14.Voltage Selector (General Model only)

The voltage selector on the rear panel of this unit must be set
for your local main voltage BEFORE plugging into the AC
main supply.
Voltages are AC 110/120/220/240V, 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

IMPORTANT

THE WIRES IN THE 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. Making sure that
neither core is connected to the earth terminal of the three pin plug.

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 15 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.
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.

PLACEMENT

The use of the H.P.F. OUTPUT terminals for connecting

•

with the amplifier is effective for improving sound quality of
your speaker system.
This connection prevents sound output from the main
speakers from muddying by filtering out low frequencies of
input signals to be sent to the main speakers which are not
suitable for reproducing low frequencies.
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.
Moreover, the PHASE switch allows you to select the best
sound quality for various listening conditions.
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.

C

B

A

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.

5

CONNECTIONS

OUTPUT

TO SPEAKERS

INPUT1

FROM AMPLIFIER

INPUT2 H.P.F.OUTPUTPHASE

NOM REV 50Hz I00Hz

80Hz

ON OFF

AUTO

POWER

OUTPUT

TO SPEAKERS

INPUT1

FROM AMPLIFIER

INPUT2 H.P.F.OUTPUTPHASE

NOM REV 50Hz I00Hz

80Hz

ON OFF

AUTO

POWER

OUTPUT

TO SPEAKERS

INPUT1

FROM AMPLIFIER

INPUT2 H.P.F.OUTPUTPHASE

NOM REV 50Hz I00Hz

80Hz

ON OFF

AUTO

POWER

OUTPUT

TO SPEAKERS

INPUT1

FROM AMPLIFIER

INPUT2 H.P.F.OUTPUTPHASE

NOM REV 50Hz I00Hz

80Hz

ON OFF

AUTO

POWER

OUTPUT

TO SPEAKERS

INPUT1

FROM AMPLIFIER

OUTPUT

TO SPEAKERS

INPUT1

FROM AMPLIFIER

• 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

Left speakerRight speaker

This unit

To AC outlet

To connect two units

Right speaker

This unit

Amplifier

Left speaker

This unit

To AC outlet

6

Amplifier

To AC outlet