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UB
YST-SW325
Subwoofer System
OWNER’S MANUAL
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IMPORTANT SAFETY INSTRUCTIONS 1 Read these instructions. 2 Keep these instructions. 3 Heed all warnings. 4 Follow all instructions. 5 Do not use this apparatus near water. 6 Clean only with dry cloth. 7 Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. Explanation of Graphical Symbols 8 Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including The lightning flash with arrowhead symbol,
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We Want You Listening For A FCC INFORMATION (for US customers) Lifetime 1 IMPORTANT NOTICE : DO NOT MODIFY THIS UNIT! YAMAHA and the Electronic Industries Association’s This product, when installed as indicated in the Consumer Electronics Group want you to get the most out instructions contained in this manual, meets FCC of your equipment by playing it at a safe level. One that requirements. Modifications not expressly lets the sound come through loud and clear without approved by Yam
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Thank you for selecting this YAMAHA subwoofer system. CAUTION: Read this before operating your unit Please read the following operating precautions Do not place this unit where foreign objects such as before use. YAMAHA will not be held responsible water drips might fall. It might cause a fire, damage to for any damage and/or injury caused by not this unit, and/or personal injury. following the cautions below. Never put a hand or a foreign object into the YST port To assure the finest
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VOLTAGE SELECTOR (Asia and General models only) CONTENTS The voltage selector switch on the rear panel of this FEATURES ....................................................................2 unit must be set for your local main voltage BEFORE plugging this unit into the AC main supply. Voltages SUPPLIED ACCESSORIES ...........................................2 are 110-120/220-240 V AC, 50/60 Hz. Standby mode PLACEMENT ................................................................3 When thi
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FEATURES SUPPLIED ACCESSORIES This subwoofer system employs Advanced Yamaha After unpacking, check that the following parts are Active Servo Technology II which Yamaha has contained. 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 Non-skid pads audio sys
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PLACEMENT 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 A B fig. .) If using two subwoofers, we recommend that you place them on the outside of each front speaker. (See fig. C .) The placement s
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CONNECTIONS Choose one of the following two connecting methods that is more suitable for your audio system. Choose 1 (pages 4-5) if your amplifier has line output (pin jack) terminal(s) Choose 2 (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
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CONNECTIONS ■Using one subwoofer Subwoofer Mono pin cable (not included) OUTPUT INPUT TO SPEAKERS 2 AUTO STANDBY HIGH LOW OFF OUTPUT INPUT PHASE TO SPEAKERS 2 L /MONO L /MONO NORM REV R INPUT 1 FROM AMPLIFIER VOLTAGE SELECTOR 220V-240V POWER 110V-120V ON OFF R INPUT 1 FROM AMPLIFIER Audio pin To AC outlet cable (not included) Amplifier ■Using two subwoofers Mono pin cable(not included) OUTPUT INPUT OUTPUT INPUT TO SPEAKERS TO SPEAKERS 2 2 L /MONO L /MONO R R INPUT 1 INPUT 1 FROM AMPLIFIER FROM
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CONNECTIONS 2 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 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 ampl
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CONNECTIONS 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) Right front speaker Left front speaker OUTPUT INPUT TO SPEAKERS 2 L /MONO Subwoofer R INPUT 1 AUTO STANDBY HIGH FROM AMPLIFIER LOW OFF TO OUTPUT SPEAKERS INPUT 2 PHASE L /MONO NORM REV INPUT 1 R FROM AMPLI
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CONNECTIONS Connecting to the INPUT1/OUTPUT Plug in the subwoofer to the AC outlet terminals of the subwoofer After all connections are completed, plug in the subwoofer and other audio/video components to the AC outlet. ■Before connecting Remove the insulation coating at the extremity of each speaker cable by twisting the coating off. AUTO STANDBY HIGH LOW OFF Good No Good OUTPUT INPUT PHASE TO SPEAKERS 2 L /MONO NORM REV R 10mm INPUT 1 FROM AMPLIFIER (3/8”) VOLTAGE SELECTOR 220V-240V POWER 11
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CONTROLS AND THEIR FUNCTIONS Advanced 1 23 4 5 6 Control panel Top Front panel AUTO STANDBY 9 HIGH OUTPUT INPUT PHASE 8 LOW TO SPEAKERS 2 OFF L /MONO NORM REV R AUTO INPUT 1 STANDBY HIGH FROM AMPLIFIER LOW OFF OUTPUT INPUT PHASE TO SPEAKERS 2 L /MONO NORM REV 0 A B R INPUT 1 FROM AMPLIFIER VOLTAGE SELECTOR VOLTAGE POWER 220V-240V 110V-120V ON SELECTOR POWER OFF 220V-240V ON 110V-120V OFF C 7 Rear panel (General model) 1 POWER INDICATOR 3 B.A.S.S. (Bass Action Selector System) button Lights up
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CONTROLS AND THEIR FUNCTIONS WARNING 5 HIGH CUT control Adjusts the high frequency cut off point. Be sure to unplug the subwoofer before setting the Frequencies higher than the frequency selected by this VOLTAGE SELECTOR switch correctly. control are all cut off (and no output). Note * One graduation of this control represents 10 Hz. When both @INPUT1 and AINPUT2 terminals of the 6 VOLUME control subwoofer are connected with the amplifier, you may hear Adjusts the volume level. Turn the contr
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AUTO STANDBY FUNCTION 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.) Activate the AUTO STANDBY function 1 Press the STANDBY/ON button to set the subwoofer in the standby mode. (The power indicator goes off.) 2 S
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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 front speakers by following the procedures described below. 7 3 POWER NORM REV ON OFF 3 8 5 1,6 1 Set the VOLUME control to minimum (0). 8 Select “MOVIE” or “MUSIC” according to the played source. 2 Turn on the power of all the other components. MOVIE: 3 Make sure that the POWER switch is set to the ON When a movie type source is play
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ADJUSTING THE SUBWOOFER BEFORE USE Frequency characteristics This subwoofer’s frequency characteristics dB HIGH CUT 90 Hz 90 HIGH CUT 150 Hz 80 70 60 HIGH CUT 50 Hz 50 40 20 50 100 200 500Hz Frequency response graph* 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
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ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY II In 1988, Yamaha brought to the marketplace speaker Yamaha’s newly developed Advanced YST II adds many systems utilizing YST (Yamaha Active Servo Technology) refinements to Yamaha Active Servo Technology, to give powerful, high quality bass reproduction. This allowing better control of the forces driving the amplifier technique uses a direct connection between the amplifier and speaker. From the amplifier’s point of view, the and speaker, allowing
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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 The power plug is not securely Connect it securely. STANDBY/ON button is set to the ON connected. position. The POWER switch is set to the OFF Set the POWER sw
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SPECIFICATIONS Type...... Advanced Yamaha Active Servo Technology II Power Consumption................................................70 W Driver ..........................................20 cm (8”) cone woofer Standby Power Consumption ...............................0.5 W Magnetic shielding type Dimensions (W x H x D) Amplifier Output (100 Hz, 5 ohms, 10% THD) .......................................315 mm x 380 mm x 374 mm ........................................................................
