Yamaha YST-SW315 User Manual
YST-SW315
YST-SW215
Subwoofer System
U B
OWNERS MANUAL
IMPORTANT SAFETY INSTRUCTIONS
1 Read these instructions.
2 Keep these instructions.
3 Heed all warnings.
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 APPLIANCE TO
RAIN OR MOISTURE.
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.
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.
• Be sure to allow spaces of at least 20 cm above,
behind and on both sides of the unit.
• Do not place the following objects on the unit:
A vessel with water in it.
If the vessel falls by vibrations and water spills, it
may cause damage to the unit, and/or you may get an
electric shock.
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.
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.
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.
Thank you for selecting this YAMAHA subwoofer system.
CAUTION: Read this before operating your unit
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 equipments.
Never pull the wires themselves.
• When not planning to use this unit for a long period (ie.,
vacation, etc.), disconnect the AC power plug from the
wall outlet.
• To prevent lightning damage, disconnect the AC power
plug when there is an electric storm.
• Since this unit has a built-in power amplifier, heat will
radiate from the rear panel. Place the unit apart from the
walls, allowing at least 20 cm of space above, behind and
on both sides of the unit to prevent fire or damage.
Furthermore, do not position with the rear panel facing
down on the floor or other surfaces.
• Do not cover the rear panel of this unit with a newspaper,
a tablecloth, a curtain, etc. in order not to obstruct heat
radiation. If the temperature inside the unit rises, it may
cause fire, damage to the unit and/or personal injury.
• Do not place the following objects on this unit:
Glass, china, small metallic etc.
If glass etc. falls by vibrations and breaks, it may cause
bodily injury.
A burning candle etc.
If the candle falls by vibrations, it may cause fire and
bodily injury.
A vessel with water in it
If the vessel falls by vibrations and water spills, it may
cause damage to the speaker, and/or you may get an
electric shock.
• Do not place this unit where foreign objects such as
water drips might fall. It might cause a fire, damage to
this unit, and/or personal injury.
• Never put a hand or a foreign object into the YST port
located on the right side of this unit. When moving this
unit, do not hold the port as it might cause personal
injury and/or damage to this unit.
• Never place a fragile object near the YST port of this
unit. If the object falls or drops by the air pressure, it may
cause damage to the unit and/or personal injury.
• Never open the cabinet. It might cause an electric shock
since this unit uses a high voltage. It might also cause
personal injury and/or damage to this unit.
• When using a humidifier, be sure to avoid condensation
inside this unit by allowing enough spaces around this
unit or avoiding excess humidification. Condensation
might cause a fire, damage to this unit, and/or electric
shock.
• Super-bass frequencies reproduced by this unit may
cause a turntable to generate a howling sound. In such a
case, move this unit away from the turntable.
• This unit may be damaged if certain sounds are
continuously outputted at high volume level. For
example, if 20 Hz-50 Hz sine waves from a test disc,
bass sounds from electronic instruments, etc. are
continuously outputted, or when the stylus of a turntable
touches the surface of a disc, reduce the volume level to
prevent this unit from being damaged.
• If you hear distorted noise (i.e., unnatural, intermittent
“rapping” or “hammering” sounds) coming from this
unit, reduce the volume level. Extremely loud playing of
a movie soundtrack’s low frequency, bass-heavy sounds
or similarly loud popular music passages can damage
this 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.
• 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.
1
• VOLTAGE SELECTOR
(For China, Korea and General models)
The voltage selector switch on the rear panel of this
unit must be set for your local main voltage BEFORE
plugging this unit into the AC main supply. Voltages
are 110/120/220/240 V AC, 50/60 Hz.
CONTENTS
CAUTION ......................................................................1
FEATURES ....................................................................3
Standby mode
When this unit is turned off by pressing the
STANDBY/ON button on the front panel, this unit
consumes a small amount of power. This state is called
the standby mode. This unit’s power supply is
completely cut off from the AC line only when the
POWER switch on the rear panel is set in the OFF
position or the AC power cord is disconnected.
This unit features a magnetically shielded design, but
there is still a chance that placing it too close to a TV
set might impair picture color. Should this happen,
move this unit away from the TV set.
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.
SUPPLIEDACCESSORIES ...........................................3
PLACEMENT ................................................................4
CONNECTIONS ...........................................................5
Connecting to line output (pin jack) terminals
1
of the amplifier .................................................... 5
Connecting to speaker output terminals of
2
the amplifier .......................................................... 8
Connecting to the INPUT1/ OUTPUT terminals
of the subwoofer .......................................................12
Plug in the subwoofer to the AC outlet ....................12
CONTROLSANDTHEIRFUNCTIONS ..................13
AUTOMATICPOWER-SWITCHING
FUNCTION .................................................................15
ADJUSTINGTHESUBWOOFER
BEFOREUSE .............................................................16
Frequency characteristics .........................................17
ADVANCEDYAMAHAACTIVESERVO
TECHNOLOGY ..........................................................18
TROUBLESHOOTING...............................................19
SPECIAL INSTRUCTIONS FOR U.K. MODEL
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. Making sure that neither core is
connected to the earth terminal of the 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.
SPECIFICATIONS.......................................................20
2
FEATURES
SUPPLIED ACCESSORIES
• This subwoofer system employs Advanced Yamaha
Active Servo Technology which Yamaha has developed
for reproducing higher quality super-bass sound. (Refer
to page 18 for details on Advanced Yamaha Active
Servo Technology.) 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 the effective use of the subwoofer, the subwoofer’s
super-bass sound should be matched to the sounds of
your main 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 bass effect suitable for the source by
using the B.A.S.S. button.
QD-Bass Technology
QD-Bass (Quatre Dispersion Bass) technology uses
square, pyramid-shaped reflective plates to radiate the
sound in four horizontal directions.
After unpacking, check that the following parts are
contained.
Non-skid pads
3
PLACEMENT
One subwoofer will have a good effect on your audio
A
B
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 main speaker. (See
A
fig. .) If using two subwoofers, it is recommended to
place them on the outside of each main speaker. (See
B C
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 out each
other. To prevent this from happening, face the subwoofer
B
system at an angle as in fig. or .
A
Note
There may be a case that you cannot obtain enough superbass sounds from the subwoofer when listening in the
center of the room. This is because “standing waves” have
been developed between two parallel walls and they cancel
the bass sounds.
In such a case, face the subwoofer obliquely to the wall. It
also may be necessary to break up the parallel surfaces by
placing bookshelves etc. along the walls.
C
( : subwoofer, : main speaker)
Use the non-skid pads
Put the provided non-skid pads at the four corners on the
bottom of the subwoofer to prevent the subwoofer from
moving by vibrations etc.
4
CONNECTIONS
Choose one of the following two connecting methods that is more suitable for your audio
system.
Choose (pages 5-7) if your amplifier has line output (pin jack) terminal(s)
■
1
■ Choose (pages 8-11) if your amplifier has no line output (pin jack)
2
terminal
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.
1
Connecting to line output (pin jack) terminals of the amplifier
• To connect with a YAMAHA DSP amplifier (or AV receiver), connect the SUBWOOFER (or LOW PASS etc.)
terminal on the rear of the DSP 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 DSP 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 8-11.)
• 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.
L
L
R
L
5
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