YST-SW216
Subwoofer System
UB
OWNER’S MANUAL
i
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.
12Use 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.
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.
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.
WARNING
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
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.
• 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.
ii
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/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.
iii
Thank you for selecting this YAMAHA subwoofer system.
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.
• 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.
• 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
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..
As long as this unit is connected to the AC wall outlet, it
is not disconnected from the AC power source even if
you turn off this unit by POWER.
1
SPECIAL INSTRUCTIONS FOR U.K. MODEL
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.
CAUTION .....................................................................iii
FEATURES .................................................................... 1
SUPPLIED ACCESSORIES........................................... 1
PLACEMENT ................................................................ 2
CONNECTIONS ........................................................... 3
Connecting to line output (pin jack) terminals of the
amplifier .............................................................. 3
Connecting to speaker output terminals of the
amplifier ............................................................... 5
Connecting to the INPUT 1/ OUTPUT terminals
of the subwoofer ......................................................... 7
Plug in the subwoofer to the AC outlet ...................... 7
CONTROLS AND THEIR FUNCTIONS .................... 8
ADJUSTING THE SUBWOOFER
BEFORE USE ............................................................... 9
Frequency characteristics ........................................ 10
ADVANCED YAMAHA ACTIVE SERVO
TECHNOLOGY II ....................................................... 11
TROUBLESHOOTING .............................................. 12
SPECIFICATIONS ...................................................... 13
• This subwoofer system employs Advanced Yamaha
Active Servo Technology II which Yamaha has
developed for reproducing higher quality super-bass
sound. (Refer to page 11 for details on Advanced
Yamaha Active Servo Technology II.) This super-bass
sound adds a more realistic, theater-in-the-home effect
to your stereo system.
• This subwoofer can be easily added to your existing
audio system by connecting to either the speaker
terminals or the line output (pin jack) terminals of the
amplifier.
• The HIGH CUT switch provides you with two positions
(HIGH and LOW) to adjust the tone balance between the
subwoofer and the front speakers.
After unpacking, check that the following parts are
contained.
Non-skid pads (1 set, 4 pieces)
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.
VOLTAGE SELECTOR
(For Asia and General models only)
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
1
2
FEATURES
SUPPLIED ACCESSORIES
2
( : subwoofer, : front speaker)
One subwoofer will have a good effect on your audio
system, however, the use of two subwoofers is
recommended to obtain more effect.
If using one subwoofer, it is recommended to place it on
the outside of either the right or the left front speaker. (See
fig. .) If using two subwoofers, it is recommended to
place them on the outside of each front speaker. (See
fig. .) The placement shown in fig. is also possible,
however, if the subwoofer system is placed directly facing
the wall, the bass effect may lessen 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
system at an angle as in fig. or .
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
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.
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.
PLACEMENT
A
B
C
Note
A
B C
A
B
3
Choose one of the following two connecting methods that is more suitable for your audio
system.
■
Choose (pages 3-4) when you want to enjoy 5.1 surround system
■ Choose (pages 5-6) when you want to output the low frequency signals
Unplug the subwoofer and other audio/video components before making connections.
• 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 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 INPUT 2 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 INPUT 2 terminal to the “R” side of the SPLIT
SUBWOOFER terminals.
• 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 5-6.)
• 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.
CONNECTIONS
1
2
Caution
Notes
Connecting to line output (pin jack) terminals of the amplifier
Notes
1
L
L
R
L
4
■ Using one subwoofer
■ Using two subwoofers
CONNECTIONS
POWER
VOLUME
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
Subwoofer
Amplifier
To AC outlet
Mono pin cable
(not included)
Audio pin cable
(not included)
POWER
VOLUME
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
POWER
VOLUME
OUTPUT
TO SPEAKER S
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
Amplifier
To AC outlet To AC outlet
Mono pin cable
(not included)
Subwoofer
Subwoofer
Mono pin cable
(not included)
5
Select this method if your amplifier has no line output (pin jack) terminal.
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 INPUT 1 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.
• If your amplifier has only one set of front speaker output terminals, see page 6.
■ Using one subwoofer (with speaker cables)
■ Using two subwoofers (with speaker cables)
CONNECTIONS
Connecting to speaker output terminals of the amplifier
2
Note
POWER
VOLUME
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
OUTPUT
TO SPEAKERS
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
INPUT
2
Amplifier
Right front speaker
Left front speaker
Subwoofer
To AC outlet
Speaker output
terminals
POWER
VOLUME
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
POWER
VOLUME
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
OUTPUT
TO SPEAKERS
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
INPUT
2
OUTPUT
TO SPEAKERS
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
INPUT
2
Amplifier
Right front speaker
Left front speaker
To AC outlet
To AC outlet
Speaker output
terminals
Subwoofer
Subwoofer
6
If your amplifier has only one set of front speaker output terminals.
Connect the speaker output terminals of the amplifier to the INPUT 1 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)
CONNECTIONS
POWER
VOLUME
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
OUTPUT
TO SPEAKERS
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
INPUT
2
Right front speaker
Left front speaker
Subwoofer
Amplifier
Speaker output
terminals
To AC outlet
POWER
VOLUME
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
POWER
VOLUME
OUTPUT
TO SPEAKERS
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
OUTPUT
TO SPEAKERS
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
INPUT
2
OUTPUT
TO SPEAKERS
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
INPUT
2
Right front speaker
Left front speaker
Subwoofer
Speaker output
terminals
To AC outlet
To AC outlet
Amplifier
Subwoofer
7
For connection, keep the speaker cables as short as
possible. Do not bundle or roll up the excess part of the
cables. If the connections are faulty, no sound will be heard
from the subwoofer or the speakers, or both of them. Make
sure that the + and – polarity markings of the speaker
cables are observed and set correctly. If these cables are
reversed, the sound will be unnatural and lack bass.
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 the insulation coating at the extremity of each
speaker cable by twisting the coating off.
■ How to connect:
1 Press and hold the terminal’s tab, 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 in the subwoofer
and other audio/video components to the AC outlet.
CONNECTIONS
Connecting to the INPUT 1/OUTPUT
terminals of the subwoofer
Caution
Good
No Good
10 mm
(3/8”)
2
1
Note: Do not insert the
insulation coating into
the hole. The sound
may not be produced.
Black: negative (
–
)
Red: positive (+)
Plug in the subwoofer to the AC outlet
To AC outlet
8
1
POWER
switch
Press this switch to the
ON
position to turn on the
power to the subwoofer. When the power of the
subwoofer is on, the power indicator (4) on the rear
panel light up in green. Press this switch again to set it
to
OFF
position to turn off the power of the subwoofer.
2
OUTPUT (TO SPEAKERS) terminals
Can be used for connecting to the front speakers.
Signals from the
INPUT 1
terminals are sent to these
terminals.
(Refer to “CONNECTIONS” for details.)
3
VOLUME control
Adjusts the volume level. Turn the control clockwise to
increase the volume, and counterclockwise to decrease
the volume.
4
Power indicator
Light up in green when the power switch (1) is turned
on; turns off when the power switch is turned off.
5
HIGH CUT switch
Selects the high frequency cut off point. Normally, it is
set to
LOW
, however, you may set to
HIGH
if
necessary. (Refer to page 9)
6
INPUT 2 terminals
Used to input line level signals from the amplifier.
(Refer to “CONNECTIONS” for details.)
7
INPUT 1 (FROM AMPLIFIER) terminals
Used to connect the subwoofer with the speaker
terminals of the amplifier.
(Refer to “CONNECTIONS” for details.)
CONTROLS AND THEIR FUNCTIONS
POWER
VOLUME
OUTPUT
TO SPEAKER S
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
INPUT
2
OUTPUT
TO SPEAKERS
1
34
7
6
5
2
VOLUM E
Subwoofer rear panel
9
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 procedures described below.
1
Set the
VOLUME
control to minimum (0).
2
Turn on the power of all the other components.
3
Press the
POWER
switch to the
ON
position.
* The Power indicator lights up in green.
4
Play a source containing bass signal and adjust the
amplifier’s volume control to the desired listening
level.
5
Set the
HIGH CUT
switch to the
LOW
or
HIGH
position.
This subwoofer is designed so that the optimum tone
balance between the subwoofer and the front
speakers is obtained when this switch is set to the
LOW
position. The tone balance may change,
however, depending on the room size, the distance
from the subwoofer to the front speakers, and so on.
If necessary, switch it to the
HIGH
position.
6
Rotate the
VOLUME
control gradually to adjust the
volume balance between the subwoofer and the other
speakers.
* Normally, set the control to the 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
switch and the
VOLUME
control again.
• Once the volume balance between the subwoofer and
the front speakers is adjusted, you can adjust the
volume of your whole 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
switch, refer to “Frequency characteristics” on page
10.
ADJUSTING THE SUBWOOFER BEFORE USE
POWER
VOLUME
OUTPUT
TO SPEAKER S
INPUT
2
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
ON
OFF
/MONO
HIGH LOW
HIGH
CUT
INPUT 1
FROM AMPLIFIER
INPUT
2
OUTPUT
TO SPEAKERS
1,6
5
3
VOLUME
Subwoofer rear panel
Notes
10
The frequency response of this subwoofer
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 a 4” or 6.5” (10 cm or 16 cm) acoustic suspension, 2 way system front
speakers
*This diagram does not depict actual frequency response characteristics accurately.
ADJUSTING THE SUBWOOFER BEFORE USE
Frequency response
20 50 100 200 500Hz
40
50
60
70
80
90
dB
HIGH CUT
HIGH
HIGH CUT
LOW
VOLUME
HIGH LOW
HIGH
CUT
20 50 100 200 500Hz
40
50
60
70
80
90
dB
YST-SW216
Front speaker
11
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
12
Refer to the chart below when 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 your authorized YAMAHA dealer
or service center.
TROUBLESHOOTING
Problem Cause What to Do
Power is not supplied even though the
POWER
switch is set to the
ON
position.
The power plug is not securely
connected.
Connect it securely.
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 “–”.
A source sound with few bass
frequencies is played.
Play a source sound with bass
frequencies.
Set the
HIGH CUT
switch to the
HIGH
position.
It is influenced by standing waves. Reposition the subwoofer or break up
the parallel surface by placing
bookshelves etc. along the walls.
13
Type .....Advanced Yamaha Active Servo Technology II
Driver........................................ 25 cm (10”) cone woofer
Magnetic shielding type
Output Power .............. 50 W (100 Hz, 5 Ω 10 %T.H.D)
Dynamic Power ............................................ 100 W, 5 Ω
Input Impedance .................................................. 12 KΩ
Frequency Response ............... 25 Hz - 180 Hz (–10 dB)
Input Sensitivity ..................50 mV (100 Hz, 50 W/5 Ω)
Power Supply
U.S.A. and Canada models ............... AC 120V, 60 Hz
U.K. and Europe models ..................AC 230V, 50 Hz
Australia model ................................AC 240V, 50 Hz
Asia and General models
............................... AC 110-120/220-240 V, 50/60 Hz
Power Consumption .............................................. 45 W
Dimensions (W x H x D)
...................................... 340 mm x 340 mm x 385 mm
(13-3/8” x 13-3/8” x 15-5/32”)
Weight ................................................ 11.2 kg (24.7 lbs.)
Please note that all specifications are subject to change
without notice.
SPECIFICATIONS
©
2006 All rights reserved.
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, 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 WD18 7GQ, 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
Printed in Indonesia WG59120
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