YSTSW325 - Subwoofer YAMAHA - Free user manual and instructions

USER MANUAL YSTSW325 YAMAHA

• 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).

• 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 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.

• 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.

• 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 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.

• Never 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.

• 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 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.

• Install this unit near the wall outlet and where the AC power plug can be reached easily.

• 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. CAUTION: Read this before operating your unit1 English

• VOLTAGE SELECTOR (Asia 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. 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.

ADJUSTING THE SUBWOOFER

TECHNOLOGY II ....................................................... 14 TROUBLESHOOTING ............................................... 15 SPECIFICATIONS .......................................................16 Standby mode When this unit is set in standby mode by pressing the STANDBY/ON button on the control 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 to a TV set might impair picture color. Should this happen, move this unit away from the TV set. 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

• This subwoofer system employs Advanced Yamaha Active Servo Technology II which Yamaha has developed for reproducing higher quality super-bass sound. (Refer to page 14 for details on Advanced Yamaha Active Servo Technology II.) 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 the subwoofer, the subwoofer’s super-bass sound should be matched to the sounds of your front speakers. You can create the best sound quality for various listening conditions by using the HIGH CUT control and the PHASE switch.

• The AUTO STANDBY function saves you the trouble of pressing the STANDBY/ON button to turn the power on and off.

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

• This subwoofer system is equipped with a linear port unique to Yamaha that provides smooth bass response during playback, minimizing extraneous noise not included in the original input signal. After unpacking, check that the following parts are contained. Non-skid pads FEATURES QD-Bass Technology QD-Bass (Quatre Dispersion Bass) technology is a Yamaha unique technology to radiate the sound efficiently in four horizontal direction. SUPPLIED ACCESSORIES3 English The position of the subwoofer is not so critical since low bass sounds are not highly directional. For a sonorous sound field, although you can obtain a good effect with one subwoofer, the use of two subwoofers is recommended. If using one subwoofer, we recommend that you place it on the outside of either the right or the left front speaker. (See fig. .) If using two subwoofers, we recommend that you place them on the outside of each front speaker. (See fig. .) The placement shown in fig. 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. or . ( : subwoofer, : front speaker) 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 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. PLACEMENT

A B C4 Choose one of the following two connecting methods that is more suitable for your audio system. Choose (pages 4-5) if your amplifier has line output (pin jack) terminal(s) Choose (pages 6-7) if your amplifier has no line output (pin jack) terminal Caution: Do not connect the power cord of the subwoofer and other components into an AC outlet until all connections between components are completed. Note 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 of your component to be connected to the subwoofer.

• To connect with an amplifier (or AV receiver), connect the SUBWOOFER (or LOW PASS etc.) terminal on the rear of the amplifier (or AV receiver) to the /MONO INPUT2 terminal of the subwoofer.

• When connecting the subwoofer to the SPLIT SUBWOOFER terminals on the rear of the amplifier, be sure to connect the /MONO INPUT2 terminal to the “L” side and the INPUT2 terminal to the “R” side of the SPLIT SUBWOOFER terminals. Notes

• 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 6-7.)

• When connecting to a monaural line output terminal of the amplifier, connect the /MONO INPUT2 terminal.

• 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

Connecting to line output (pin jack) terminals of the amplifier

Subwoofer Amplifier To AC outlet Mono pin cable (not included) Audio pin cable (not included)

Amplifier To AC outlet To AC outlet Mono pin cable(not included) Mono pin cable (not included) Subwoofer Subwoofer6 CONNECTIONS Select this method if your amplifier has no line output (pin jack) terminal. If your amplifier has two sets of front speaker output terminals and both terminals can output sound signals simultaneously.

• Connect one set of front speaker output terminals of the amplifier to the INPUT1 terminals of the subwoofer, and connect the other set of front speaker output terminals of the amplifier to the front speakers.

• Set the amplifier so that both sets of front speaker output terminals output sound signals simultaneously. Note If your amplifier has only one set of front speaker output terminals, see page 7. ■ Using one subwoofer (with speaker cables) ■ Using two subwoofers (with speaker cables) Connecting to speaker output terminals of the amplifier

Amplifier Right front speaker Left front speaker Subwoofer To AC outlet To AC outlet Subwoofer Speaker output terminals7 CONNECTIONS English If your amplifier has only one set of front 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 front speakers. ■ Using one subwoofer (with speaker cables) ■ Using two subwoofers (with speaker cables)

Right front speaker Left front speaker Subwoofer Speaker output terminals To AC outlet To AC outlet Amplifier Subwoofer8 CONNECTIONS ■ Before connecting Remove the insulation coating at the extremity of each speaker cable by twisting the coating off. ■ How to connect 1 Press and hold the terminal’s tab, as shown in the figure below. 2 Insert the bare wires. 3 Release your finger from the tab to allow it to lock securely on the cable’s wire end. 4 Test the firmness of the connection by pulling lightly on the cable at the terminal. Notes

• Do not let the bare speaker wires touch each other, because this could damage the subwoofer or the amplifier, or both of them.

• 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 terminals are observed and set correctly. If these cables are reversed, the sound will be unnatural and lack bass. After all connections are completed, plug in the subwoofer and other audio/video components to the AC outlet. Connecting to the INPUT1/OUTPUT terminals of the subwoofer Good No Good 10mm (3/8”)

Plug in the subwoofer to the AC outlet

To AC outlet9 English 1 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 AUTO STANDBY function. (Refer to page 11 of “AUTO STANDBY FUNCTION” .) Goes off when the subwoofer is set in the standby mode by pressing the STANDBY/ON button. 2 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.) 3 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. 4 HIGH CUT FILTER button ON: Enables the HIGH CUT control setting (5). PASS: Simplifies the signal path to reduce sound deterioration. (Choose this setting if your amplifier has LFE or subwoofer output terminals.)

Rear panel (General model) Control panel Front panel Top Standby mode The subwoofer is still using a small amount of power in this mode. PA S S O N10

CONTROLS AND THEIR FUNCTIONS

5 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. 6 VOLUME control Adjusts the volume level. Turn the control clockwise to increase the volume, and counterclockwise to decrease the volume. 7 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 button. Set this switch to the OFF position to completely cut off the subwoofer’s power supply from the AC line. 8 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 AUTO STANDBY function operates as described on page 11. 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. 9 OUTPUT (TO SPEAKERS) terminals Can be used for connecting to the front speakers. Signals from the INPUT1 terminals are sent to these terminals. (Refer to page 7 of “CONNECTIONS” for details.) 0 INPUT1 (FROM AMPLIFIER) terminals Used to connect the subwoofer with the speaker termi- nals of the amplifier. (Refer to pages 6 and 7 of “CONNECTIONS” for de- tails.) A INPUT2 terminals Used to input line level signals from the amplifier. (Refer to pages 4 and 5 of “CONNECTIONS” for details.) B 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. C VOLTAGE SELECTOR switch (Asia and General models only) If the preset setting of the switch is incorrect, set the switch to the proper voltage (110-120/220-240V) 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. Note When both @INPUT1 and AINPUT2 terminals of the subwoofer are connected with the amplifier, you may hear a mixed sound due to the effect of the subwoofer receiving the input signals from both the terminals. If this happens, connect the amplifier only to either the @INPUT1 or AINPUT2 terminal.11 English The subwoofer automatically places itself in the standby mode if it does not receive an input signal for 7 or 8 minutes. (The power indicator lights in red.) This is called AUTO STANDBY function. When the subwoofer detects a bass signal input of below 200 Hz, it automatically places itself on. (The power indicator lights in green.) 1 Press the STANDBY/ON button to set the subwoofer in the standby mode. (The power indicator goes off.) 2 Select the following positions of the AUTO STANDBY switch. - LOW: Normally select this position to activate this function. - HIGH: If this function does not operate with the AUTO STANDBY switch set to LOW, select this position so that the subwoofer detects input signals with a lower level and switches the power on automatically. 3 Press the STANDBY/ON button again to set the subwoofer on. (The power indicator lights in green.) Notes

• This function operates only when both the POWER switch and the STANDBY/ON button are set to ON.

• The time period before the subwoofer places itself in the standby mode may vary due to a noise received from other appliances.

• If the subwoofer switches the power on unexpectedly by receiving noises from other appliances, set the AUTO STANDBY switch to the OFF position to deactivate this function.

AUTO STANDBY FUNCTION

Activate the AUTO STANDBY function12 Before using the subwoofer, adjust the subwoofer to obtain the optimum volume and tone balance between the subwoofer and the front speakers by following the procedures described below. 1 Set the VOLUME control to minimum (0). 2 Turn on the power of all the other components. 3 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. 4 Play a source containing low-frequency components and adjust the amplifier’s volume control to the desired listening level. 5 Adjust the HIGH CUT control to the position where the desired response can be obtained and press HIGH CUT FILTER button to the ON position. Normally, set the control to the level a little higher than the front speaker’s rated minimum reproducible frequency*.

• The front speaker’s rated minimum reproducible frequency can be looked up in the speakers’ catalog or owner’s manual. 6 Increase the volume gradually to adjust the volume balance between the subwoofer and the front speakers. Normally, set the control to the level where you can 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. 7 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. 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. MUSIC: When an ordinary music source is played, the excessive low-frequency components are cut off to make the sound clearer. Notes

• Once the volume balance between the subwoofer and the front 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 front 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 13.

English This subwoofer’s frequency characteristics The figures below show the optimum adjustment of each control and the frequency characteristics when this subwoofer is combined with a typical front speaker system. ■ EX.1 When combined with a 4” or 5” (10 cm or 13 cm) acoustic suspension, 2 way system front speakers If you are using NS-325F speakers as front speakers, use the following example as a reference when adjusting settings. ■ EX.2 When combined with an 8” or 10” (20 cm or 25 cm) acoustic suspension, 2 way system front speakers *This diagram does not depict actual frequency response characteristics accurately. Frequency characteristics (90Hz) (REV)(70Hz) (REV)20 50 100 200 500Hz

YST-SW325 Front speaker Frequency response graph*14 In 1988, Yamaha brought to the marketplace speaker systems utilizing YST (Yamaha Active Servo Technology) to give powerful, high quality bass reproduction. This technique uses a direct connection between the amplifier and speaker, allowing accurate signal transmission and precise speaker control. As this technology uses speaker units controlled by the negative impedance drive of the amplifier and resonance generated between the speaker cabinet volume and port, it creates more resonant energy ( the “air woofer” concept) than the standard bass reflex method. This allows for bass reproduction from much smaller cabinets than was previously possible. Yamaha’s newly developed Advanced YST II adds many refinements to Yamaha Active Servo Technology, allowing better control of the forces driving the amplifier and speaker. From the amplifier’s point of view, the speaker impedance changes depending on the sound frequency. Yamaha developed a new circuit design combining negative-impedance and constant-current drives, which provides a more stable performance and clear bass reproduction without any murkiness.

ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY II

High-amplitude bass sound Port Cabinet Advanced impedance Converter Active Servo Processing Amplifier Signals of low amplitude Air woofer (Helmholtz resonator) Signals15 English 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. TROUBLESHOOTING 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 “–” to “–”. Setting of the PHASE switch is not proper. Set the PHASE 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 the STANDBY 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. Increase the volume of the amplifier and 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.16 Type...... Advanced Yamaha Active Servo Technology II Driver ..........................................20 cm (8”) cone woofer Magnetic shielding type Amplifier Output (100 Hz, 5 ohms, 10% THD) ................................................................................150 W Frequency Response ............................... 25 Hz - 180 Hz Power Supply USA and Canada models ..................AC 120 V, 60 Hz U.K. and Europe models...................AC 230 V, 50 Hz Australia model.................................AC 240 V, 50 Hz Asia and General models ...............................AC 110-120/220-240 V, 50/60 Hz Power Consumption................................................70 W Standby Power Consumption ...............................0.5 W Dimensions (W x H x D) ............................................315 mm x 380 mm x 374 mm (12-3/8” x 14-15/16” x 14-3/4”) Weight ............................................ 13 kg (28 lbs. 11 oz.) Please note that all specifications are subject to change without notice. SPECIFICATIONSNous vous remercions d’avoir porté votre choix sur ce subwoofer de YAMAHA. Tenir compte des précautions ci-dessous avant de faire fonctionner l’appareil. YAMAHA ne saurait être tenue pour responsable de tout dommage et/ou blessure dûs à un non-respect des mises en garde ci-dessous.

JUSTERING AV SUBWOOFERHÖGTALAREN INNAN BRUK

JUSTERING AV SUBWOOFERHÖGTALAREN INNAN BRUK