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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.

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.

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.

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.

CAUTION: READ THIS BEFORE OPERATING YOUR UNIT.

Caution ...........................................................................4
Features .........................................................................5
Placement ......................................................................5
Connections ...................................................................6
Controls and their functions ..........................................11

Adjusting volume  ..........................................................13
Active Servo Technology ..............................................15
Troubleshooting ............................................................16
Specifications ...............................................................16

CONTENTS

Summary of Contents for YST-SW300

Page 1: ...stem Enceinte pour très basses fréquences de traitement à asservissement actif YST SW300 Active Servo Technology Thank you for selecting this YAMAHA Subwoofer System Nous vous remercions d avoir porté votre choix sur cette enceinte pour très basses fréquences YAMAHA ...

Page 2: ...ce 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 1...

Page 3: ... 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...

Page 4: ...oducing 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 IMPORTANT Plea...

Page 5: ...ncy 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 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 s...

Page 6: ...TO SPEAKER TERMINALS OF THE AMPLIFIER Disconnect your main speakers from the amplifier and connect them to this unit To connect one unit only To connect two units CONNECTIONS OUTPUT TO SPEAKERS INPUT1 FROM AMPLIFIER INPUT2 H P F OUTPUT PHASE NOM REV 50Hz I00Hz 80Hz ON OFF AUTO POWER OUTPUT TO SPEAKERS INPUT1 FROM AMPLIFIER INPUT2 H P F OUTPUT PHASE NOM REV 50Hz I00Hz 80Hz ON OFF AUTO POWER OUTPUT ...

Page 7: ...ould damage this unit your amplifier and or speakers How to Connect Red positive Black negative 1Unscrew the knob 2Insert the bare wire Remove approx 5mm 1 4 insulation from the speaker wires 3Tighten the knob and secure the wire Banana Plug connections are also possible except for U K and Europe models Simply insert the Banana Plug connector into the corresponding terminal Connecting to this unit...

Page 8: ...uld not be connected to the OUTPUT terminals on the rear panel of this unit If connected they will not produce sound When connecting to a monaural line output terminal of the amplifier connect to either the left or right INPUT 2 terminal 8 PRE OUT SPLIT SUBWOOFER LOW PASS SUBWOOFER OUTPUT TO SPEAKERS INPUT1 FROM AMPLIFIER INPUT2 H P F OUTPUT PHASE NOM REV 50Hz I00Hz 80Hz ON OFF AUTO POWER INPUT2 H...

Page 9: ...ain speakers reproduce high frequencies only This will make the whole sound quality clear by preventing sound muddying between the main speakers and this unit This connection can be made if your amplifier has PRE OUT and MAIN IN terminals or you are using separate amplifiers pre amplifier and main amplifier To connect one unit only MAIN IN PRE OUT OUTPUT TO SPEAKERS INPUT1 FROM AMPLIFIER INPUT2 H ...

Page 10: ...0Hz I00Hz 80Hz ON OFF AUTO POWER This unit This unit Pin plug cords Right speaker Left speaker Amplifier To AC outlet To AC outlet To connect two units Switching the H P F OUTPUT switch After the connection is made select the desired frequency point 50 Hz 80 Hz or 100 Hz with the H P F OUTPUT switch Only frequencies higher than the selected frequency are output from the H P F OUTPUT terminals Norm...

Page 11: ...ntrol Used to increase or decrease the low frequency response Turn this clockwise toward the MOVIE position to increase the low frequency response Turn this counterclockwise toward the MUSIC position to decrease the low frequency response 6 OUTPUT TO SPEAKERS terminals Can be used for connections with the main speakers These terminals send signals output from the amplifier to the main speakers dir...

Page 12: ...ion will not operate There may be a case that the power turns on unexpectedly by sensing noise from other appliances If it occurs set the AUTO POWER ON OFF switch to the OFF position This function is available only when the power of this unit is on by setting the POWER switch 2 to on 9 PHASE switch Normally this switch is to be set to the normal NOM position However according to your speaker syste...

Page 13: ...r s volume control For adjusting the VOLUME control the HIGH CUT control and the PHASE switch refer to FREQUENCY CHARACTERISTICS on the next page For effective adjustment of the HIGH CUT control First set this control at about the main speakers rated minimum reproduceable frequency Then turn up the VOLUME control gradually and set it at a level where you can obtain a little more bass effect than w...

Page 14: ... This unit s frequency characteristics When combined with a 4 or 5 acoustic suspension 2 way system PHASE Set to the reverse REV position When combined with an 6 or 8 acoustic suspension 2 way system PHASE Set to the reverse REV position VOLUME 0 I0 HIGH CUT 40Hz I40Hz VOLUME 0 I0 HIGH CUT 40Hz I40Hz 20 50 100 200 500Hz 40 50 60 70 80 90 dB HIGH CUT 40 Hz HIGH CUT 90 Hz HIGH CUT 140 Hz 20 50 100 2...

Page 15: ...l 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 low frequency waves with superior damping characteristics and these waves are then radiated from the cabinet opening as high amplitude signals The system can therefore by employing the negative i...

Page 16: ...on the subwoofer or break up the parallel surface by placing bookshelves etc along the walls Turn the POWER switch on Increase the level of input signal on the source Increase the level of input signal on the source Move this unit farther away from such equipment and or change the position of connected speaker cables Otherwise do not use the automatic power ON function of this unit If the unit fai...

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