Yamaha Audio YST-SW205 User Manual

UB

YST-SW305/205

Active Servo Processing Subwoofer System

OWNER’S MANUAL

I

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.

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.

• Explanation of Graphical Symbols

WARNING

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

SAFETY INSTRUCTIONS

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.

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.

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.

II

FCC INFORMATION (for US customers only)

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

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.

III

UNPACKING After unpacking, check that the following item is contained.

Nonskid pads

IV

Thank you for selecting this YAMAHA Subwoofer System.

CAUTION: Read this before operating your unit.

● 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.

● 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
enough spaces 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.

<For U.K. and Europe models only>

Be sure to allow spaces of at least 20 cm above, behind and on
both sides of the unit.

● 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 small metallic objects on this unit. Otherwise, the
object may fall, possibly causing an injury.

● Do not place the following objects on this unit:
Glass, china, etc.

If glass etc. falls by vibrations and breaks, it may cause
personal injury.

A burning candle etc.

If the candle falls by vibrations, it may cause fire and personal
injury.

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.

● 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 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.

● VOLTAGE SELECTOR
(China 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.

VOLTAGE

SELECTOR

240V

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 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.

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 cable
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.

1

CONTENTS

SAFETY INSTRUCTIONS ....................... II

UNPACKING ........................................... IV

CAUTION .................................................. 1

FEATURES ............................................... 2

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

AUTOMATIC POWER-SWITCHING

FUNCTION............................................... 9

ADJUSTING THE SUBWOOFER

BEFORE USE ........................................ 10

Frequency characteristics.................... 11

ADVANCED YAMAHA ACTIVE SERVO

TECHNOLOGY ...................................... 12

TROUBLESHOOTING ........................... 13

SPECIFICATIONS ................................. 14

FEATURES

• This subwoofer system employs Advanced
YAMAHA Active Servo Technology which YAMAHA
has developed for reproducing higher quality
super-bass sound. (Refer to page 12 for details on
Advanced YAMAHA Active Servo Technology.) This
super-bass sound adds a more realistic, theater-in­the-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.

2

• For the effective use of this unit, this unit’s super­bass 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 or turn it to the STANDBY mode.

• You can select bass effect suitable for the source
by using the B.A.S.S. button.