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If the source being played is stopped and the input signal is
cut off for 7 to 8 minutes, the subwoofer automatically
switches to the standby mode. (When the subwoofer
switches to the standby mode by the automatic power-
switching function, the power indicator lights up in red.)
When you play a source again, the power of the subwoofer
turns on automatically by sensing audio signals input to the
subwoofer.
This function operates by sensing a certain level of low
frequency input signal. Usually set the 

AUTO STANDBY

switch to the LOW position. However, if the power is not
switched to ON or STANDBY smoothly, set the switch to the
HIGH position. 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 position and use the

STANDBY/ON button to switch the power between ON
and STANDBY manually.

* This function detects the low-frequency components

below 200 Hz of the input signals (i.e., the explosion in
the action movie, the sound of the bass guitar or the bass
drum, etc.).

* The minutes required to switch the subwoofer to the

standby mode might change by sensing noise from other
appliances.

This function is available only when the power of the
subwoofer is on (by pressing the STANDBY/ON button).

¤

OUTPUT (TO SPEAKERS)

 terminals

Can be used for connecting to the main speakers.
Signals from the 

INPUT1

 terminals (

) are sent to

these terminals.
(Refer to “

CONNECTIONS

” for details.)

#

INPUT2

 terminals

Used to input line level signals from the amplifier.
(Refer to “

CONNECTIONS

” for details.)

INPUT1 (FROM AMPLIFIER)

 terminals

Used to connect the subwoofer with the speaker
terminals of the amplifier.
(Refer to “

CONNECTIONS

” for details.)

$

AUTO STANDBY (HIGH/LOW/OFF)

 switch

This switch is originally set to the OFF position. By
setting this switch to the HIGH or LOW position, the
subwoofer’s automatic power-switching function
operates as described below. If you do not need this
function, leave this switch in the OFF position.
* Make sure to change the setting of this switch only

when the subwoofer is in the standby mode. (The
power indicator does not light.)

AUTOMATIC POWER-SWITCHING FUNCTION

PHASE

 switch

Normally this switch is to be set to the REV (reverse)
position. However, according to your speaker systems
or the listening condition, there may be a case when
better sound quality is obtained by setting this switch to
the NORM (normal) position. Select the better position
by monitoring the sound.

%

POWER

 switch

Normally, set this switch to the ON position to use the
subwoofer. In this state, you can turn on the subwoofer
or turn the subwoofer into the standby mode by
pressing the 

STANDBY/ON

 (

Ÿ

) button. Set this switch

to the OFF position to completely cut off the
subwoofer’s power supply from the AC line.

VOLTAGE SELECTOR

 switch

(China and General models only)

If the preset setting of the switch is incorrect, set the
switch to the proper voltage (110V, 120V, 220V or
240V) of your area.
Consult your dealer if you are unsure of the correct
setting.

WARNING
Be sure to unplug the subwoofer before setting the
VOLTAGE SELECTOR switch correctly.

Summary of Contents for YST-SW205

Page 1: ...I YST SW305 205 Active Servo Processing Subwoofer System OWNER S MANUAL UB ...

Page 2: ...tlet 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 W...

Page 3: ...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...

Page 4: ...IV Nonskid pads UNPACKING After unpacking check that the following item is contained ...

Page 5: ...utted 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 vol...

Page 6: ... to page 12 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 this unit this unit s super bass sound should be ...

Page 7: ...nd 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 subwoofer main speaker Ç ı Å Use the nonskid pads Put the provided nonskid pads at the four corners on the bottom of the subwoofer to prevent the subwoofer from moving by vibrations etc Note There may be a case that you cannot obtain enough super bass s...

Page 8: ...any line output terminal connect the subwoofer to the speaker output terminals of the amplifier Refer to pages 6 and 7 for details Subwoofer Amplifier To AC outlet 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 L MONO INPUT2 terminal of the subwoofer Connect the main speakers to the speaker...

Page 9: ... 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 t...

Page 10: ...amplifier 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 main speaker Right main speaker Subwoofer Amplifier Speaker output terminals To AC outlet If your amplifier has two sets of speaker...

Page 11: ...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 How to Connect Red positive Black negative 1 Loosen the knob 2 Insert the bare wire Remove the ins...

Page 12: ... button can be used only when the POWER switch is set in the ON position Standby mode The subwoofer is still using a small amount of power in this mode B A S S Bass Action Selector System button When this button is pressed in to the MUSIC position the bass sound in audio software is well reproduced By pressing the button again so that it pops out at the MOVIE position the bass sound in video softw...

Page 13: ...rs Signals from the INPUT1 terminals are sent to these terminals Refer to CONNECTIONS for details INPUT2 terminals Used to input line level signals from the amplifier Refer to CONNECTIONS for details INPUT1 FROM AMPLIFIER terminals Used to connect the subwoofer with the speaker terminals of the amplifier Refer to CONNECTIONS for details AUTO STANDBY HIGH LOW OFF switch This switch is originally se...

Page 14: ...he desired response cannot be obtained adjust the HIGH CUT control and the VOLUME control again 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 7 Set the PHASE switch to the position which gives you the better bass sound Normally set the switch to the REV reverse po...

Page 15: ...ST SW305 Main speaker s response Main speaker s response 20 50 100 200 500Hz 40 50 60 70 80 90 dB HIGH CUT 40 Hz HIGH CUT 140 Hz HIGH CUT 90 Hz 20 50 100 200 500Hz 40 50 60 70 80 90 dB YST SW205 20 50 100 200 500Hz 40 50 60 70 80 90 dB YST SW205 YST SW305 YST SW205 Main speaker s response Main speaker s response HIGH CUT 40Hz 140Hz 10 0 VOLUME HIGH CUT 40Hz 140Hz 10 0 VOLUME YST SW305 YST SW205 YS...

Page 16: ...is 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 low frequency 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 neg...

Page 17: ...DBY ON button is set to the ON position No sound Sound level is too low The subwoofer does not turn on automatically The subwoofer turns into the standby mode unexpectedly The subwoofer turns on unexpectedly Cause The power cable is not plugged in or the POWER switch is set to the OFF position The VOLUME control is set to 0 Speaker cables are not connected securely Speaker cables are not connected...

Page 18: ...and Canada models AC 120V 60 Hz U K and Europe models AC 230V 50 Hz Australia model AC 240V 50 Hz China and General models AC 110 120 220 240V 50 60 Hz Power Consumption YST SW305 80W YST SW205 70W In the standby mode 0 8W Dimensions W x H x D YST SW305 235 mm x 585 mm x 445 mm 9 5 16 x 23 x 17 1 2 YST SW205 235 mm x 485 mm x 402 mm 9 5 16 x 19 1 8 x 15 13 16 Weight YST SW305 21 kg 46 lbs 5 oz YST...

Page 19: ...IEMENSSTR 22 34 25462 RELLINGEN BEI HAMBURG F R OF 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 WD1 7JS 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 SOUT...

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