Yamaha YST-SW215 Subwoofer
Contents
1. gt To AC outlet gt To AC outlet 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 m Using one subwoofer with speaker cables lt YST SW315 gt Right main speaker Left main speaker OUTPUT TO SPEAKERS Subwoofer Amplifier Speaker output Up To AC outlet terminals lt YST SW215 gt Right main speaker Left main speaker OUTPUT TO SPEAKERS Subwoofer INT FROM AMPLIFIER Amplifier Gp To AC outlet Speaker output terminals 10 CONNECTIONS m Using two subwoofers with speaker cables lt YST SW315 gt Right main speaker Left main speaker OUTPUT TO PEAKERS INPUT 2 MONO Speaker output terminals Amplifier Sseecseezze gt To AC outlet Up To AC outlet lt YST SW215 gt Right main speaker Left main speaker 10 TO SPEAKERS2. Gp To AC outlet Audio pin cable not included SPLIT SUBWOOFER Amplifier ee BB SUBWOOFER LOW PASS m Using two subwoofers lt YST SW315 gt OUTPUT TOSPEAKERS O OUTPUT 6 0 Mono pin cable not included Mono pin cable not included Amplifier gt To AC outlet gt To AC outlet lt YST SW215 gt OUTPUT OUTPUT TO SPEAKERS TO SPEAKERS INTPUT FROM AMPLIFIER Mono pin cable not included INTPUT FROM AMPLIFIER Mono pin cable not included SPLIT SUBWOOFER Amplifier t t To AC outlet To AC outlet CONNECTIONS Connecting to speaker output terminals of the amplifier Select this method if your amplifier has no line output pin jack terminal If your amplifier has two sets of main speaker output terminals and
3. Subwoofer Speaker output terminals Amplifier Up T0 AC outlet tp To AC outlet CONNECTIONS Connecting to the INPUT1 OUTPUT terminals of the subwoofer 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 Caution Do not let the bare speaker wires touch each other because this could damage the subwoofer or the amplifier or both of them IH Before connecting Remove the insulation coating at the extremity of each speaker cable by twisting the coating off Good No Good MHHow to connect lt YST SW315 gt Loosen the terminal s knob as shown in the figure 2 Insert the bare wire Tighten the knob Test the firmness of the connection by pulling lightly on the cable at the terminal Red positive Black negative U S A Canada and Australia models only Banana Plug conection are also possible Tighten the terminal knob Simply insert the banana plug into the terminal lt YST SW215 gt Press and hold the terminal s tab as shown in the figure Insert the bare wire
4. Release your finger from the tab to allow it to lock securely on the cable s wire end C Test the firmness of the connection by pulling lightly on the cable at the terminal Red positive Black negative Plug in the subwoofer to the AC outlet After all connections are completed plug in the subwoofer and other audio video components to the AC outlet lt YST SW315 gt To AC outlet lt YST SW215 gt L gt To AC outlet 12 CONTROLS AND THEIR FUNCTIONS lt YST SW315 gt N a D POWER Ne _ Rear panel General model C y lt YST SW215 gt N OUTPUT TO SPEAKERS INTPUT FROM AMPLIFIER Rear panel General model Ka z 13 Power indicator Lights up in green while the subwoofer is on Lights up in red while the subwoofer is set in the standby mode by the operation of the automatic power switching function Goes off when the subwoofer is set in the stand
5. 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 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 CONTENTS CAUTION FEATURES SUPPLIED ACCESSORIES 1 0 eceeeeeeeeceeeeeee PLACEMENT e a Seas attest CONNECTIONS 1 Connecting to line output pin jack terminals of the amplifier Connecting to speaker output terminals of
6. MONO INPUT2 terminal to the L side and the R INPUT2 terminal to the R side of the SPLIT SUBWOOFER terminals Notes e 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 8 11 e When connecting to a monaural line output terminal of the amplifier connect the MONO INPUT2 terminal e 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 mUsing one subwoofer lt YST SW315 gt Subwoofer Mono pin cable not included OUTPUT TO SPEAKERS Audio pin cable not included gt To AC outlet Amplifier sheet i oa SUBWOOFER LOW PASS lt YST SW215 gt Subwoofer Mono pin cable not included OUTPUT TO SPEAKERS m Sy Sy INTPUT FROM AMPLIFIER
7. or has been dropped 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 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
8. YAMAHA YST SW315 YST SW215 Subwoofer System Advanced 12 Y S T OWNER S MANUAL IMPORTANT SAFETY INSTRUCTIONS 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 Explanation of Graphical Symbols 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 WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE IMPORTANT space below Model Serial No unit reference Please record the serial number of this system in the The serial number is located on the rear of the main Retain this Owner s Manual in a safe place for future N Oo oO fF OD Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth Do not block any ventilation openings Install in acc
9. subwoofer is on by pressing the STANDBY ON button ADJUSTING THE SUBWOOFER BEFORE USE 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 lt YST SW315 gt SUBWOOFER SYSTEM YST SW315 IFF G STANDBY ON B AS S HIGH CUT VOLUME ze O9 Q o HH ote 3 8 5 1 6 lt YST SW215 gt SUBWOOFER SYSTEM YST SW215 i O O da ma o 385 Set the VOLUME control to minimum 0 1 6 Turn on the power of all the other components Make sure that the POWER switch is set to the ON position then press the STANDBY ON button to turn on the subwoofer The Power indicator lights up in green Play a source containing low frequency components and adjust the amplifier s volume control to the desired listening level Adjust the HIGH CUT control to the position where the desired response can be obtained Normally set the control to the level a little higher than the main speaker s rated minimum reproducible frequency The main speaker s rated minimum reproducible frequency can be looked up in the speakers catalog or owner s manual Increase the volume gradually to adjust the volume balance between the subwoofer and the main speakers Normally set the control to the level where you can
10. 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 VASTRA FROLUNDA SWEDEN YAMAHA MUSIC AUSTRALIA PTY LTD 17 33 MARKET ST SOUTH MELBOURNE 3205 VIC AUSTRALIA YAMAHA CORPORATION Printed in Indonesia WB35910 1
11. both terminals can output sound signals simultaneously Connect one set of main speaker output terminals of the amplifier to the INPUT1 terminals of the subwoofer and connect the other set of main speaker output terminals of the amplifier to the main speakers Set the amplifier so that both sets of main speaker output terminals output sound signals simultaneously Note e If your amplifier has only one set of main speaker output terminals see page 10 m Using one subwoofer with speaker cables lt YST SW315 gt Right main speaker Subwoofer Left main speaker OUTPUT TO SPEAKERS To AC outlet Speaker output terminals Amplifier lt YST SW215 gt Right main speaker Subwoofer Left main speaker INTPUT FROM AMPLIFIER To AC outlet Speaker output terminals Amplifier CONNECTIONS m Using two subwoofers with speaker cables lt YST SW315 gt Left main speaker Right main speaker Speaker output terminals Amplifier gt To AC outlet FROM AMPLIFIER INPUT1 gt To AC outlet lt YST SW215 gt Left main speaker Right main speaker Amplifier Speaker output terminals
12. 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
13. obtain a little more bass effect than when the subwoofer is not used If the desired response cannot be obtained adjust the HIGH CUT control and the VOLUME control again Set the PHASE switch to the position which gives you the better bass sound Normally set the switch to the REV reverse position If the desired response cannot be obtained set the switch to the NORM normal position PHASE POWER NORM REV H p 3 7 PHASE POWER NORM REV R OFF 8 Select MOVIE or MUSIC according to the played source MOVIE When a movie type source is played the low frequency effects are enhanced to allow the listeners enjoy more powerful sound The sound will be thicker and deeper MUSIC When an ordinary music source is played the excessive low frequency components are cut off to make the sound clearer The sound will be lighter and reproduces the melody line more clearly 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 the HIGH CUT control and the PHASE switch refer to Frequency characteristics on page 17 16 ADJUSTING THE SUBWOOFER BEFORE USE Frequency characteristics This subwoofer s frequency ch
14. the amplifier ccscccciiscessaeectscncwcenedecearanuenes Connecting to the INPUT1 OUTPUT terminals Of the subWoOOfer isror e aeree a Plug in the subwoofer to the AC outlet NJ CONTROLS AND THEIR FUNCTIONS AUTOMATIC POWER SWITCHING FUNCTION oeer aanerer EEEO ADJUSTING THE SUBWOOFER BEFORE USE Frequency characteristics ccscecceeeeeeeeeeeeeeeeees ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY s sssssssso tistestissdeds rsoda TROUBLESHOOTING oses niini SPECIFICATIONS peihs a t FEATURES SUPPLIED ACCESSORIES This subwoofer system employs Advanced Yamaha After unpacking check that the following parts are Active Servo Technology which Yamaha has developed contained for reproducing higher quality super bass sound Refer to page 18 for details on Advanced Yamaha Active Servo Technology This super bass sound adds a more CS 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 the subwoofer the subwoofer s super bass 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 STANDB Y ON
15. 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 Want You exposure from excessive volume LISTENING For A Lifetime levels Thank you for selecting this YAMAHA subwoofer system CAUTION Read this before operating your unit 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 e 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 e 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 disco
16. Converter Signals of low amplitude Active Servo Processing Signals 18 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 STANDBY ON button is set to the ON position The power plug is not securely connected Connect it securely The POWER switch is set to the OFF position Set the POWER switch to the ON position 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 en pm to Setting of the PHASE switch is not proper Set the PHASE switch to the other position A source sound with few bass freguencies is played Play a source sound with bass freguencies Set the HIGH CUT control to a higher position It is influenced by standing waves Reposition the subwoofer or break up the parallel surface by placing bookshelves etc along the walls The subwoofer does not turn on automatically The POWER switch is set to the OFF posit
17. GH CUT VOLUME dB HIGH CUT VOLUME dB K rli GO ba A D so YST SW315 YST SW215 AOHz 140Hz o 10 70 K J 50Hz 150Hz o 10 23 a V PHASE ot ai PHASE Mai Set to the K Set to the 60 eck REV reverse position gletpeeee ss REV reverse position speaker 50 40 20 50 100 200 500Hz ts 50 100 200 soni 17 ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY 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 o
18. R SWITCHING FUNCTION 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 this function does not operate 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 15 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 to the standby mode 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
19. T SW215 gt 20 cm 8 cone woofer JA2165 Magnetic shielding type Amplifier Output 100 Hz 5 ohms 10 THD SY STS WI JSS wc isos pekotu EA VREE 250W lt YST SW215 gt s uses skasrssesstasma sesotss s ss bs e t s 120W Freguency Response lt YST SW3 15 gt 20 Hz 160 Hz 10 dB lt YST SW215 gt eee 28 Hz 200 Hz 10 dB Power Supply USA and Canada models AC 120V 60 Hz U K and Europe models 000 AC 230V 50 Hz Australia model cccccceceseeeeees AC 240V 50 Hz China Korea and General models soins Ree AC 110 120 220 240 V 50 60 Hz Power Consumption SY STS W315 5s diski ek inci aistu 80W lt YST SW215 3 313 Reins Geet 95W Standby Power Consumption 0 0 0 5W Dimensions W x H x D lt YST SW315 gt 350 mm x 430 mm x 382 mm 13 3 4 x 16 15 16 x 15 1 16 lt YST SW215 gt 290 mm x 360 mm x 322 mm 11 7 16 x 14 3 16 x 12 11 16 Weight lt YST SW315S a nagos 19 kg 41 lbs 13 oz lt YST SW215 gt oe 11 5 kg 25 lbs 60 oz Please note that all specifications are subject to change without notice 20 YAMAHA 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 F R OF GERMANY YAMAHA ELECTRONIQUE
20. aracteristics lt YST SW315 gt lt YST SW215 gt dB La ll 1 CUT 40 Hz HIGH CUT 90 Hz HIGH CUT 90 Hz U a 5 1 H ij AFR a HIGH CUT 140 Hz 9 it CUT 140 Hz 80 a A ia 70 d N id 60 HIGH CUT 40 Hz A NN x 40 i 20 50 100 200 500Hz 20 50 100 200 500Hz The figures below show the optimum adjustment of each control and the frequency characteristics when this subwoofer is combined with a typical main speaker system MEX 1 When combined with a 4 or 5 10 cm or 13 cm acoustic suspension 2 way system main speakers lt YST SW315 gt a lt YST SW215 gt dB HIGH CUT VOLUME HIGH CUT VOLUME 90 80 YST SW215 PHASE SIST PHASE ef Main A Set to the Set to the speaker N REV reverse position REV reverse position 50 40 40 20 50 100 200 500Hz 20 50 100 200 500Hz E EX 2 When combined with an 8 or 10 20 cm or 25 cm acoustic suspension 2 way system main speakers lt YST SW315 gt lt YST SW215 gt HI
21. button to turn the power on and off e You can select bass effect suitable for the source by using the B A S S button Non skid pads COJD Boss TECHNOLOGY GD Bass Technology QD Bass Quatre Dispersion Bass technology uses square pyramid shaped reflective plates to radiate the sound in four horizontal directions Va subwoofer i Y PLACEMENT EN 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 IAI If using two subwoofers it is recommended to place them on the outside of each main speaker See fig IB The placement shown in fig IC 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 A or B Note 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
22. by mode STANDBY ON button Press this button to turn on the power when the POWER switch is set in the ON position The power indicator lights up in green Press again to set the subwoofer in the standby mode The power indicator goes off 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 software is well reproduced l MOVIE MUSIC HIGH CUT control Adjusts the high frequency cut off point Frequencies higher than the frequency selected by this control are all cut off and no output One graduation of this control represents 10 Hz VOLUME control Adjusts the volume level Turn the control clockwise to increase the volume and counterclockwise to decrease the volume VOLTAGE SELECTOR switch China Korea 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 CONTROLS AND THEIR FUNCTIONS POWER switch Normally set this switch to the ON position to use the subwo
23. equency 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 For China Korea and General models 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 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 cord is disconnected This unit features a magnetically shielded design but there is still a chance that placing it too close toa TV set might impair picture color Should this happen move this unit away from the TV set
24. er 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 e 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 fr
25. f 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 Cabinet High amplitude bass sound 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 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 Advanced Negative impedance
26. ion Set the POWER switch to the ON position The STANDBY ON button is set to the OFF position Set the STANDBY ON button 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 does not turn into the standby mode automatically 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 The AUTO STANDBY switch is set to the OFF position Set the AUTO STANDBY switch to the HIGH or LOW 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 19 SPECIFICATIONS Type Advanced Yamaha Active Servo Technology Driver lt YST SW315 gt 25 cm 10 cone woofer JA2564 Magnetic shielding type lt YS
27. nnect the power plug and the wires connected to other equipments Never pull the wires themselves e 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 e 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 e 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 e 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 Nev
28. ofer In this state you can turn on the subwoofer or turn the subwoofer into the standby mode by pressing the STANDBY ON button Set this switch to the OFF position to completely cut off the subwoofer s power supply from the AC line 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 INPUT1 FROM AMPLIFIER terminals Used to connect the subwoofer with the speaker terminals of the amplifier Refer to CONNECTIONS for details INPUT2 terminals Used to input line level signals from 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 on page 15 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 set in the standby mode by pressing the STANDBY ON button 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 14 AUTOMATIC POWE
29. ordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 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 LA a 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
30. 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 CONNECTIONS Choose one of the following two connecting methods that is more suitable for your audio system mChoose 1 pages 5 7 if your amplifier has line output pin jack terminal s mChoose 2 pages 8 11 if your amplifier has no line output pin jack terminal Caution Unplug the subwoofer and other audio video components before making connections Notes e All connections must be correct