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YAMAHA YST-SW305/205 Manual

1. A 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 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 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 CONNECTIONS Caution Plug in the subwoofer and other audio video 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 Basically connect the subwoofer to the line output pin jack terminal s of the amplifier Refer to pages 4 and 5 for details If your amplifier does not have any line output terminal connect the subwoofer to the speaker output terminals of the amplifier Refer to pages 6 and 7 for details 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 When connecting the su
2. 11 ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY reir 12 TROUBLESHOOTING 13 SPECIFICATIONS 14 For the effective use of this unit this unit 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 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 PLACEMENT IN IN subwoofer 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 A If using two subwoofers it is recommended to place them on the outside of each main speaker See fig B The placement shown in fig C 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
3. CONTROLS AND THEIR FUNCTIONS Front panel E N STANDBY B m 3 S HIGH CUT VOLUME EMUSIC 40 140Hz 0 N POWER OUTPUT AUTO PHASE TOSPEAKERS 2 STANDBY FROM AMPLIFIER INPUT 1 2 Rear panel Illustration shows YST SW205 Power indicator Oo HIGH CUT control Lights up in green while the subwoofer is turned on Adjusts the high frequency cut off point Frequencies higher than the frequency selected by this STANDBY ON button control are all cut off and no output Press this button to turn on the power The power One graduation of this control represents 10 Hz indicator lights up in green l HIGH CUT Press again to set the subwoofer in the standby mode The power indicator does not light This button can be used only when the POWER 6 n C 5 switch is set in the ON position o 40Hz 140Hz Standby mode The subwoofer is still using a small amount of power VOLUME control in this mode Adjusts the volume level Turn the control clockwise to increase the volume and counterclockwise to e B A S S Bass Action Selector System button decrease the volume When this button is pressed in to the MUSIC position the bass sound in audio software is well r
4. 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 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 Front panel Rear panel r PHASE STANDBY B A S S HIGH CUT VOLUME ON OMOvIE 5 1 6 Iil ee llustration shows YST SW205 1 Setthe VOLUME control to minimum 0 7 Setthe PHASE switch to the position which Turn on the power of all the other gives you ie pener Dass ROB components Normally set the Switch to the REV reverse position If the desired response cannot be 3 Make sure that the POWER switch is set to obtained set the switch to the NORM norma
5. YAMAHA YS FSWS309 205 Active Servo Processing Subwoofer System gt Advanced Y S T OWNER S MANUAL II 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 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 TO REDUCE THE RISK OF FIRE OR ELECTRIC WARNING SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE SAFETY INSTRUCTIONS o0 OD 10 11 12 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 bloc
6. reverse position dB 80 YST SW205 as 70 80 Main Speaker s x 50 response Combined frequency response 80 50 EX 2 When combined with an 8 or 10 20 cm or 25 cm acoustic suspension 2 way system main speakers YST SW305 dB HIGH CUT VOLUME T T TTTTT T T T T Combined frequency response o 40Hz 140Hz O 70 One graduation of this control represents 10 Hz gg PHASE Set to the REV 50 YST SW305 N R Main speaker s response reverse position 40 20 50 500Hz YST SW205 HIGH CUT VOLUME OHO 40Hz 140Hz o One graduation of this control represents 10 Hz PHASE Set to the REV reverse position dB EP Perry T T T T hg Combined frequency response YST SW205 50 200 500Hz 500Hz 12 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 conventionall
7. OUT When you connect the subwoofer to the PRE OUT the amplifier connect the MONO INPUT2 terminal 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 Connecting to speaker output terminals of the amplifier E 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 Right main speaker Left main speaker OUTPUT 9 TOSPEAKERS D Amplifier Speaker output p terminals b gt To AC outlet If your amplifier has two sets of speaker output terminals Right main Left main 9 Subwoofer Speaker speaker OUTPUT TOSPEAKERS D 9909 To AC outlet p gt Speaker output terminals Amplifier Both A and B speaker outputs must be ON Illustration shows YST SW205 E Using two subwoofers Connect the speaker output terminals of the amplifier to the INPUT1 terminals of the subwoofer and
8. can obtain a little more bass effect than when this control and the PHASE switch refer to Frequency unit is not used If the desired response cannot characteristics on the next page be obtained adjust the HIGH CUT control and the VOLUME control again Frequency characteristics This subwoofer s frequen cy characteristics YST SW305 HIGH CUT 40 Hz HIGH CUT 90 Hz HIGH CUT 140 Hz N 80 50 500Hz YST SW205 HIGH CUT 90 Hz HIGH CUT 140 Hz HIGH CUT 50 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 EX 1 When combined with a 4 or 5 10 cm or 13 cm acoustic suspension 2 way system main speakers YST SW305 dB HIGH CUT VOLUME Combined frequency response 40Hz D 40Hz One graduation of this control represents 10 Hz PHASE Set to the REV reverse position YST SW305 Main X speaker s response 50 500Hz YST SW205 HIGH CUT VOLUME o di o o o 40Hz 140Hz O 10 One graduation of this control represents 10 Hz PHASE Set to the REV
9. connect the OUTPUT terminals of the subwoofer to the main speakers Right main speaker Left main speaker OUTPUT 9 TOSPEAKERS D OUTPUT 9 TOSPEAKERS D 9 Subwoofer Amplifier Speaker output To AC outlet terminals To AC outlet Illustration shows YST SW205 Connecting to the INPUT1 OUTPUT terminals of the subwoofer For connections keep the speaker cables as short as Caution possible Do not bundle or roll up the excess part of the Do not let the bare speaker wires touch each other as cables If the connections are faulty no sound will be heard this could damage the subwoofer or the amplifier or from the subwoofer or the speakers or both of them Make both of them 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 lt U S A Canada Australia China and General models Red positive only gt Black negative Banana Plug connections are also possible CD Loosen the knob 2 Insert the bare wire Remove the insulation coating at the extremity of each speaker cable by twisting the coating off CD Tighten the terminal knob 3 Tighten the knob 2 Simply insert the Banana Plug connector into the and secure the wire terminal
10. E control to the right 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 to Setting of the PHASE switch is not proper Set the switch to the other position A source sound with few bass frequencies is played Play a source sound with bass frequencies 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 position Set the POWER switch to the ON position The STANDBY ON button is set to OFF Set the STANDBY ON button to ON 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
11. ISTENING For A Lifetime HI IV UNPACKING After unpacking check that the following item is contained Nonskid pads 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 po
12. bject to change without notice amp 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 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 CORPORATION YAMAHA SCANDINAVIA AB J A WETTERGRENS GATA 1 BOX 30053 400 43 V STRA FR LUNDA SWEDEN YAMAHA MUSIC AUSTRALIA PTY LTD 17 33 MARKET ST SOUTH MELBOURNE 3205 VIC AUSTRALIA Printed in Indonesia c V731310 1
13. bwoofer to the SPLIT receiver connect the SUBWOOFER or LOW PASS etc SUBWOOFER terminals on the rear of the DSP amplifier terminal on the rear of the DSP amplifier or AV receiver be sure to connect the MONO INPUT2 terminal to the to the MONO INPUT2 terminal of the subwoofer L side and the B INPUT2 terminal to the R side of the SPLIT SUBWOOFER terminals E Using one subwoofer Right main speaker Left main speaker Subwoofer OUTPUT zm 9 TO SPEAKERS 9 49 FROM AMPLIFIER To AC outlet SPLIT SUBWOOFER Amplifier SUBWOOFER LOW PASS llustration shows YST SW205 E Using two subwoofers Right main speaker OUTPUT Left main speaker OUTPUT TOSPEAKERS D 9 9 9 e FROM AMPLIFIER 00006 0000 TO SPEAKERS y Gr T 50 FROM AMPLIFIER INPUT 1 Subwoofer Subwoofer b gt To AC outlet INPUT 1 e 1 SPLIT SUBWOOFER Amplifier gt To AC outlet llustration shows YST SW205 Notes Some amplifiers have line output terminals labeled PRE When connecting to a monaural line output terminal of
14. ck 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 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
15. connected speaker cables Otherwise set the AUTO STANDBY switch to the OFF position 13 14 SPECIFICATIONS Type Advanced Yamaha Active Servo Technology Driver 3 5 20 cm 83 cone woofer Magnetic shielding type x 2 20 cm 83 cone woofer Magnetic shielding type Amplifier Output YS ESWS3905 tu 200W 5Q YST SW205 ee ice tese 150W 5Q Frequency Response YST SWO905 dani 20 Hz to 160 Hz YST SWO205 4e x een ck ede 23 Hz to 170 Hz Power Supply USA 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 YS T SWD905 Rc 80W YST SW205 esssssesseeeeeeeteere nennen 70W In the standby mode 0 8W Dimensions W x H x D 3 5 235 mm x 585 mm x 445 mm 9 5 16 x 23 x 17 1 2 2 5 235 mm x 485 mm x 402 mm 9 5 16 x 19 1 8 x 15 13 16 Weight YS ESWS905 ente 21 kg 46 Ibs 5 oz 2 15 kg 33 Ibs 1 oz Nonskid pad x 4 Please note that all specifications are su
16. ease 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 Wantvoa L
17. eproduced By pressing the button again so that it pops out at the MOVIE position the bass sound in video software is well reproduced ll n MOVIE MUSIC Q 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 9 INPUT2 terminals Used to input line level signals from the amplifier Refer to CONNECTIONS for details o INPUT1 FROM AMPLIFIER terminals Used to connect the subwoofer with the speaker terminals of the amplifier Refer to CONNECTIONS for details o 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 10 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 thi
18. escribed 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 Converter Signals of low amplitude Active Servo Processing Amplifier Signals 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 cable 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 cable is not plugged in or the POWER switch is set to the OFF position Plug the power cable into an AC outlet and or set the POWER switch to the ON position No sound The VOLUME control is set to 0 Turn the VOLUM
19. k any ventilation openings Install in accordance 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 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus Only use attachments accessories specified by the manufacturer Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the e apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 14 Unplug this apparatus during lightning storms or when unused for long periods of time 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 ope
20. l the ON position then press the STANDBY position ON button to turn on the subwoofer 8 Select MOVIE or MUSIC according to the The power indicator lights up in green played source 4 Play a source containing low frequency MOVIE When a movie type source is played the components and adjust the amplifier s low frequency effects are enhanced to allow the volume control to the desired listening level listener enjoy more powerful sound The sound 5 will be thicker and deeper Adjust the HIGH CUT control to the position MUSIC When an ordinary music source is where the desired response can be played the excessive low frequency components obtained are cut off to make the sound clearer The sound Normally set the control to the main speaker s will be lighter and reproduces the melody line rated minimum reproducible frequency more clearly The main speaker s rated minimum reproducible frequency can be looked up in the Once the volume balance between the subwoofer and speakers catalog or owner s manual the main speakers is adjusted you can adjust the volume of your whole sound system by using the 6 Increase the volume gradually to adjust the amplifier s volume control volume balance between the subwoofer and However if you change the main speakers to others the main speakers you must make this adjustment again Normally set the control to the level where you e For adjusting the VOLUME control the HIGH CUT
21. m 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 CONTENTS SAFETY INSTRUCTIONS II GAUTION 1 FEATURES pO 2 PLACEMENT eoe Ree 3 CONNECTIONS ees 4 Connecting to line output pin jack terminals of the amplifier 4 Connecting to speaker output terminals of the ampliflGr x ouai ertet 6 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 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 CONTROLS AND THEIR FUNCTIONS 8 AUTOMATIC POWER SWITCHING FUNCTION cain her Qe Dai os 9 ADJUSTING THE SUBWOOFER BEFORE USE hene doni rine th 10 Frequency characteristics
22. rate normally or has been dropped 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 DFF and ON pl
23. s 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 D 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 AUTOMATIC POWER 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 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
24. sition 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 sho
25. 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 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 THE WIRES IN MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE As the colours of the wires in the mains lead of this apparatus terminals in your plug proceed as follows The wire which is coloured BLUE must be connected to the terminal which is coloured BROWN must be connected to the terminal which is IMPORTANT Blue NEUTRAL Brown LIVE may not correspond with the coloured markings identifying the marked with the letter N or coloured BLACK The wire 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 fro
26. y 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 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 d

YAMAHA YST-SW305/205 Manual

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