Yamaha SW-201 Owner's manual

Yamaha SW-201 Owner's manual
UC
SW-201
Subwoofer System
Enceinte a Caisson de Grave
OWNER’S MANUAL
MODE D’EMPLOI
• Explanation of Graphical Symbols
CAUTION
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.
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.
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.
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
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN
OR MOISTURE.
SAFETY INSTRUCTIONS
1
Read Instructions – All the safety and operating
instructions should be read before the unit is operated.
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.
2
Retain Instructions – The safety and operating
instructions should be retained for future reference.
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
Carts and Stands – The unit should be used only with
a cart or stand that is recommended by the
manufacturer.
Nonuse Periods – The power cord of the unit should be
unplugged from the outlet when left unused for a long
period of time.
14
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.
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.
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
6A
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 builtin 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.
English
FCC INFORMATION (for US customers only)
1.
2.
3.
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.
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.
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.
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:
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.
The above statements apply ONLY to those products
distributed by Yamaha Corporation of America or its
subsidiaries.
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.
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.
CONTENTS
SAFETY INSTRUCTIONS
......................................... Inside of Front Cover
CAUTION ......................................................... 2
FEATURES ..................................................... 3
PLACEMENT .................................................. 3
CONNECTIONS .............................................. 4
Connecting to line output (pin jack)
terminals of the amplifier .............................. 4
Connecting to speaker output terminals
of the amplifier ............................................. 6
CONTROLS AND THEIR FUNCTIONS .......... 8
ADJUSTMENT BEFORE USING THE
SUBWOOFER ................................................. 9
Frequency characteristics .......................... 10
ADVANCED YAMAHA ACTIVE SERVO
TECHNOLOGY ............................................. 11
TROUBLESHOOTING .................................. 12
SPECIFICATIONS ......................................... 12
E-1
Thank you for selecting this YAMAHA subwoofer system.
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
equipments. Never pull the wires themselves.
5.
Do not attempt to clean the unit with chemical solvents
as 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.
7.
When not planning to use this unit for a long period
(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 electric storm.
9.
Since this unit has a built-in power amplifier, heat will
radiate from the rear panel. Place the unit apart from
the walls, allowing enough space above, behind and on
the 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.
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.
Vibration generated by super-bass frequencies may
cause images on a TV to be distorted. In such a case,
move this unit away from the TV set.
E-2
12.
This unit features a magnetically shielded design, but it
is still possible for the picture color to be impaired when
the subwoofer is placed too close to a TV set. Should
this happen, move this unit away from the TV set.
13.
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.
14.
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.
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.
● This subwoofer system employs Advanced YAMAHA
Active Servo Technology which YAMAHA has developed
for reproducing higher quality super-bass sound. (Refer
to page 11 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.
● The HIGH CUT switch provides you with two positions
(HIGH and LOW) to adjust the tone balance between the
subwoofer and the main speakers.
● The AUTO STANDBY switch saves you the trouble of
setting the POWER switch to the ON or OFF position.
English
FEATURES
PLACEMENT
Å
(
ı
: subwoofer,
Ç
: main 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 main speaker. (See fig.
Å.) If using two subwoofers, it is recommended to place
them on the outside of each main speaker. (See fig. ı.) The
placement shown in fig. Ç 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 system at
an angle as in fig. Å or ı.
Note
There may be a case that you cannot obtain enough superbass sounds from the subwoofer when listening at the
middle 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.
E-3
CONNECTIONS
Caution: Plug in the subwoofer and other components after all connections are completed.
● 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 for each of your components.
● The subwoofer can be connected to either the speaker output terminals or the line output (pin jack) terminals of the amplifier.
Choose one of the ways shown in this section that is more suitable for your audio system. Also, refer to the owner’s manual
of your component to be connected to the subwoofer.
Connecting to line output (pin jack) terminals of the amplifier
Connect the main speakers to the speaker output 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 either the left (L) or right (R) INPUT2 terminal of the
subwoofer.
● To connect the subwoofer to the SPLIT SUBWOOFER
terminals on the rear of the DSP amplifier, connect them
to both the left (L) and right (R) INPUT2 terminals of the
subwoofer.
m Using one subwoofer
Left speaker Subwoofer
Right speaker
POWER
ON
OFF
INPUT2
/MONO
VOLUME
STANDBY-RED
ON-GREEN
0
AUTO
STANDBY
HIGH
LOW
OFF
INPUT2
I0
HIGH
LOW
HIGH CUT
/MONO
INPUT1
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
To AC outlet
SUBWOOFER
(LOW PASS)
Amplifier
SPLIT SUBWOOFER
E-4
Pin plug
cords
English
m Using two subwoofers
Left speaker
Right speaker
INPUT2
INPUT2
/MONO
POWER
POWER
ON
ON
OFF
OFF
VOLUME
0
AUTO
STANDBY
HIGH
LOW
OFF
INPUT2
Pin plug
cords
Subwoofer
Subwoofer
STANDBY-RED
ON-GREEN
/MONO
I0
VOLUME
STANDBY-RED
ON-GREEN
0
AUTO
STANDBY
HIGH
LOW
HIGH
LOW
OFF
HIGH CUT
/MONO
INPUT2
INPUT1
INPUT1
FROM AMPLIFIER
FROM AMPLIFIER
OUTPUT
OUTPUT
TO SPEAKERS
TO SPEAKERS
I0
HIGH
LOW
HIGH CUT
/MONO
SPLIT SUBWOOFER
Amplifier
To AC outlet
To AC outlet
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 6 and 7.)
● When connecting to a monaural line output terminal of
the amplifier, connect the L/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.
E-5
Connecting to speaker output terminals of the amplifier
m Using one subwoofer
If your amplifier has only one set of main speaker output terminals
Connect the speaker output terminals of the amplifier to the INPUT1 terminals of the subwoofer, and connect the OUTPUT
terminals of the subwoofer to the main speakers.
Left speaker
Right speaker
Subwoofer
POWER
ON
OFF
Speaker
output
terminals
VOLUME
STANDBY-RED
ON-GREEN
0
AUTO
STANDBY
I0
HIGH
INPUT1
LOW
HIGH
LOW
OFF
HIGH CUT
INPUT2
FROM AMPLIFIER
/MONO
INPUT1
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
OUTPUT
TO SPEAKERS
To AC outlet
Amplifier
If your amplifier has two sets of speaker output terminals
Subwoofer
Right speaker
Left speaker
POWER
ON
OFF
VOLUME
STANDBY-RED
ON-GREEN
INPUT2
I0
INPUT1
HIGH CUT
FROM AMPLIFIER
0
AUTO
STANDBY
HIGH
LOW
OFF
HIGH
LOW
/MONO
INPUT1
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
OUTPUT
TO SPEAKERS
To AC outlet
A
B
Speaker output terminals
E-6
Amplifier
(Both A and B speaker outputs
must be ON.)
English
m Using two subwoofers
Connect the speaker output terminals of the amplifier to the INPUT1 terminals of the subwoofer, and connect the OUTPUT
terminals of the subwoofer to the main speakers.
Left speaker
Right speaker
Subwoofer
Subwoofer
POWER
POWER
ON
ON
OFF
OFF
INPUT1
INPUT1
FROM AMPLIFIER
FROM AMPLIFIER
VOLUME
VOLUME
STANDBY-RED
ON-GREEN
0
AUTO
STANDBY
HIGH
LOW
OFF
STANDBY-RED
ON-GREEN
I0
HIGH
LOW
OFF
HIGH CUT
INPUT2
INPUT2
0
AUTO
STANDBY
HIGH
LOW
I0
HIGH
LOW
HIGH CUT
/MONO
/MONO
INPUT1
INPUT1
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
OUTPUT
OUTPUT
TO SPEAKERS
TO SPEAKERS
To AC outlet
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
To AC outlet
Amplifier
Speaker output
terminals
Connecting to the INPUT1/OUTPUT terminals of the subwoofer
For connections, keep the speaker wires as short as
possible. (Cut the excessive wire if necessary.) If the
connections are faulty, no sound will be heard from the
speakers. Make sure that the + and – polarity markings of
the speaker wires are observed and set correctly. If these
wires are reversed, the sound will be unnatural and lack
bass.
Caution
Do not let the bare speaker wires touch each other or
any metal part of the subwoofer. This could damage the
subwoofer, the amplifier or the speakers, or all of them.
How to Connect:
Red: positive (+)
Black: negative (–)
➀
➁
➂
1 Press and hold the terminal’s tab, as shown in the figure.
2 Insert the bare wire end properly into the terminal hole.
[Remove approx. 10 mm (3/8”) insulation from the
speaker cord.]
3 Release your finger from the tab to allow it to lock
securely on the cord’s wire end.
4 Test the firmness of the connection by pulling lightly on
the cord at the terminal.
E-7
CONTROLS AND THEIR FUNCTIONS
Rear panel
POWER
1
POWER
ON
ON
OFF
OFF
VOLUME
7
2
3
VOLUME
STANDBY-RED
ON-GREEN
0
AUTO
STANDBY
HIGH
LOW
OFF
INPUT2
I0
STANDBY-RED
ON-GREEN
0
AUTO
STANDBY
HIGH
LOW
OFF
HIGH
LOW
I0
HIGH
LOW
HIGH CUT
8
HIGH CUT
4
/MONO
INPUT2
/MONO
INPUT1
FROM AMPLIFIER
OUTPUT
5
TO SPEAKERS
6
1
2
3
4
5
6
E-8
POWER switch
Set this switch to the ON position to turn on the power
of the subwoofer. When the power of the subwoofer is
on, the power indicator below the POWER switch lights
up GREEN. Set this switch to the OFF position to turn
off the power of the subwoofer.
Power indicator
Lights up GREEN when the POWER switch is set to
the ON position and goes off when set to the OFF
position.
* Standby mode
If the POWER switch is set to the ON position and
the AUTO STANDBY switch is set to the HIGH or
LOW position, this indicator lights up RED when no
signal is inputted to the subwoofer.
AUTO STANDBY (HIGH/LOW/OFF) switch
By setting this switch to the HIGH or LOW position, the
subwoofer’s automatic power-switching function
operates as described on the right. 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 switch (1) is in the OFF
position.
INPUT2 terminals
Used to input line level signals from the amplifier.
INPUT1 (FROM AMPLIFIER) terminals
Used to connect the subwoofer with the speaker
terminals of the amplifier.
OUTPUT (TO SPEAKERS) terminals
Can be used for connecting to the main speakers.
Signals are sent directly from the amplifier to the main
speakers by way of these terminals.
7
8
INPUT1
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
VOLUME control
Adjusts the volume level.
HIGH CUT (HIGH/LOW) switch
Selects the high frequency cut off point.
Normally, it is set to LOW, however, you may set to
HIGH if necessary. Refer to “Note about setting the
HIGH CUT switch” on page 9.
Automatic power-switching function
When you play a source, the power of the subwoofer
turns on automatically by sensing audio signals input to
the subwoofer. On the other hand, the subwoofer
automatically switches to the standby mode if the source
being played is stopped or the input signal is cut off for a
few minutes.
This function will operate by sensing a certain level of
low frequency input signal. Its sensitivity is high in the
HIGH position and low in the LOW position of the AUTO
STANDBY switch. Set this switch to the position you
prefer. In the HIGH position, the power will turn on even
with a low level of input signal. But please be aware that
the subwoofer may not switch to the standby mode when
there is an extremely low input signal.
* The power might turn on unexpectedly by sensing
noise from other appliances. If that occurs, set the
AUTO STANDBY switch to the OFF or LOW position.
* The level of low frequency input signal differs with
each source and among different parts within the
same source. This means that the function may not
operate properly on some sources.
This function is available only when the power of the
subwoofer is on (by setting the POWER switch (1)
to “ON”).
English
ADJUSTMENT BEFORE USING THE SUBWOOFER
Before using the subwoofer, adjust the subwoofer to obtain the optimum volume and tone balance between the subwoofer and
the main speakers by following the procedures described below.
Rear panel
VOLUME
POWER
1, 4
POWER
2
ON
ON
OFF
STANDBY-RED
ON-GREEN
OFF
0
AUTO
STANDBY
HIGH
LOW
OFF
VOLUME
STANDBY-RED
ON-GREEN
0
AUTO
STANDBY
HIGH
LOW
OFF
INPUT2
I0
HIGH
LOW
HIGH CUT
5
I0
HIGH
LOW
HIGH CUT
INPUT2
/MONO
/MONO
INPUT1
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
INPUT1
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
1
2
Set the VOLUME control to minimum (0).
3
Play a source and adjust the amplifier’s
volume control to the desired listening level.
4
Increase the volume gradually to adjust the
volume balance between the subwoofer and
the main speakers.
5
If necessary, you may set the HIGH CUT
switch to the HIGH position.
Turn on the power supply to all the
components.
Notes
● Once the volume balance between the subwoofer and the
main 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 main speakers to others, you
must make this adjustment again.
● For adjusting the VOLUME control and the HIGH CUT
switch, refer to “Frequency characteristics” on page 10.
Note about setting the HIGH CUT switch
This subwoofer is designed so that the optimum tone
balance between the subwoofer and the main 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 main speakers,
and so on. If necessary, switch it to the HIGH position.
E-9
m Frequency characteristics
100
Fig. 1 shows the frequency characteristics of the subwoofer
with each position (HIGH/LOW) of the HIGH CUT switch.
HIGH CUT
HIGH
90
80
70
HIGH CUT
LOW
60
50
40
20
50
100
200
500Hz
Fig. 1
Fig. 2 shows the optimum volume level with the HIGH CUT
switch at the HIGH position, and the frequency
characteristics when the subwoofer is combined with a
typical 3.5” or 4” (8 cm or 10 cm) acoustic suspension, 2
way system main speakers.
100
VOLUME
90
80
70
0
SW-201
I0
60
HIGH
LOW
50
HIGH CUT
40
20
Main
speaker’s
response
50
100
Fig. 2
E-10
200
500Hz
The theory of Yamaha Active Servo Technology has been
based upon two major factors, the Helmholtz resonator and
negative-impedance 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 outputted
from this opening as waves of great amplitude if 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.
Thus it is this problem that is resolved through the
employment of a new design in which the amplifier supplies
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. 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, lowfrequency waves with superior damping characteristics.
These waves are then radiated from the cabinet opening as
high-amplitude 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 conventional Yamaha Active
Servo Technology.
Our new Active Servo Technology — Advanced Yamaha
Active Servo Technology — adopted Advanced Negative
Impedance Converter (ANIC) circuits, which allows the
conventional negative impedance converter to dynamically
vary in order to select an optimum value for speaker
impedance variation. With this new ANIC circuits, Advanced
Yamaha Active Servo Technology can provide more stable
performance and improved sound pressure compared with
the conventional Yamaha Active Servo Technology, resulting
in more natural and dynamic bass reproduction.
Air woofer
(Helmholtz resonator)
Cabinet
High-amplitude
bass sound
English
ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY
Port
Advanced Negativeimpedance Converter
Active Servo
Processing
Amplifier
Signals
Signals of low amplitude
E-11
TROUBLESHOOTING
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.
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 control is set to 0.
Turn the VOLUME control to the right.
Speaker cords are not connected
securely.
Connect them securely.
Speaker cords 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.
The POWER switch is set to the OFF
position.
Set the POWER switch to the ON
position.
The AUTO STANDBY switch is set to
the OFF position.
Set the AUTO STANDBY switch to the
“HIGH” or “LOW” position.
The level of input signal is too low.
Set the AUTO STANDBY switch to the
“HIGH” position.
The subwoofer turns into the
standby mode unexpectedly.
The level of input signal is too low.
Set the AUTO STANDBY switch to the
“HIGH” position.
The subwoofer turns on
unexpectedly.
There is an influence of noise
generated from external appliances etc.
Move the subwoofer farther away from
such appliances and/or reposition the
connected speaker cables.
Otherwise, set the AUTO STANDBY
switch to the “OFF” position.
Sound level is too low.
The subwoofer will not turn on
automatically.
SPECIFICATIONS
Type .............. Active Servo Processing Subwoofer System
Driver ..................... 16 cm (6-5/16”) cone woofer (JA1678)
magnetic shielding type
Amplifier Output .................................................. 50 W/5Ω
High-Cut Filter ............ H: 200 Hz, L: 100 Hz (–24 dB/oct.)
Frequency Response .................. 30 Hz–200 Hz (–10 dB)
Power Supply .......................................... AC 120 V, 60 Hz
Power Consumption ................................................. 42 W
Dimensions (W x H x D) ..... 200 mm x 390 mm x 389 mm
(7-7/8” x 15-3/8” x 15-5/16”)
Weight ............................................... 9.8 kg (21 lbs. 9 oz.)
* Design and specifications are subject to change without
notice.
E-12
YAMAHA
YAMAHA
YAMAHA
YAMAHA
YAMAHA
YAMAHA
YAMAHA
ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A.
CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA
ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR, 22-34, 25462 RELLINGEN, BEI HAMBURG, F.R. OF GERMANY
ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE
ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD1 7JS, ENGLAND
SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, 400 43 VASTRA FRÖLUNDA, SWEDEN
MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA
Printed in China
V555480
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