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Yamaha YST-SW325 - page 1
YST-SW325 Subwoofer System UB OWNER’S MANUAL ...
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Yamaha YST-SW325 - page 2
i IMPOR T ANT SAFETY INSTR UCTIONS 1 Read these instructions. 2 Keep these instructions. 3 Heed all warnings. 4 Follow all instructions. 5 Do not use this a ppar atus near water. 6 Clean only with dry cloth. 7 Do not block any ventilat ion openings. Install in accordance with t he manuf acturer’s in structions. 8 Do not install near any heat sour ...
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Yamaha YST-SW325 - page 3
ii W e W ant Y ou Listening For A Lifet ime 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 distorti on – and, most importantly, without affecting your sensit ...
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Yamaha YST-SW325 - page 4
iii Thank you for selecting this YAMAHA subwoofer system. Please read the followi ng operating precautions before use. YAMAHA will not be held resp onsible for any damage and/or injury caused by not following the cau tions below. • To assure the finest perfo rmance, please r ead this manual carefully. Keep it in a safe place for future reference. ...
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Yamaha YST-SW325 - page 5
1 • 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 th i ...
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Yamaha YST-SW325 - page 6
2 • This subwoofer system em ploys Advanced Yamaha Active Servo Technol ogy II which Yamaha has developed for reproducing higher quality super-bass sound. (Refer to page 14 for details on Advanced Yamaha Active Servo Tec hnology II.) This super-bass sound adds a more realistic , theater-in-the-home effect to your stereo system. • This subwoofer ...
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Yamaha YST-SW325 - page 7
3 The position of the subwoofer is not so critical since low bass sounds are not hi ghly directional. For a sonorous sound field, although you can obtain a g ood e ffect 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. ( ...
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Yamaha YST-SW325 - page 8
4 Choose one of the following two connecting method s 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 out put (pin jack) terminal Caution: Do not conn ect the power cor d of the subw oofer and other componen ts into an A C outle ...
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Yamaha YST-SW325 - page 9
5 CONNECTIONS ■ Using one subwoo fer ■ Using two subw oofers OUTPUT TO SPEAKERS INPUT 1 FROM AMPLIFIER INPUT 2 PHASE AUTO STANDBY HIGH VOLTAG E SELECTOR POWER ON OFF 220V-240V 11 0V-120V LOW OFF NORM REV /MONO L R OUTPUT TO SPEAKERS INPUT 1 FROM AMPLIFIER INPUT 2 /MONO L R Subwoofer Amplifier To AC outlet Mono pin cable (not included) Audio pin ...
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Yamaha YST-SW325 - page 10
6 CONNECTIONS Select this method if your amplifier ha s no line output (pin jack) terminal. If y our amplifier has two sets of fr ont speaker output terminals and both terminals ca n output sound signals sim ultaneously . • Connect one set of front speaker output terminals of the amplifier to the IN PUT1 terminals of the subwoofer, and connect th ...
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Yamaha YST-SW325 - page 11
7 CONNECTIONS If y our amplifier has only one set of fr ont speaker output terminals. Connect the speaker output terminals of the amplifier to the INPUT1 terminal s of the subwoofer, and connect the OUTPUT terminals of the subwoof er to the front speakers. ■ Using one subwoofer (wit h speaker cables) ■ Using two subwoofers (with speaker cables) ...
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Yamaha YST-SW325 - page 12
8 CONNECTIONS ■ Before conn ecting Remove the insulation coa ting at the extremity of each speaker cable by twis ting the coating off. ■ How to connec t 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 t ...
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Yamaha YST-SW325 - page 13
9 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 ST ANDBY 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 but ...
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Yamaha YST-SW325 - page 14
10 CONTROLS AND THEIR FUNCTIONS 5 HIGH CUT control Adjusts the high freque ncy 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 c ounterclo ...
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Yamaha YST-SW325 - page 15
11 The subwoofer automatically places itself in the standb y 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 ba ss signal input of below 200 Hz , it automatically places itse lf on. (The power indicator lights in green.) 1 Press t ...
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Yamaha YST-SW325 - page 16
12 Before using the subwoofer, adjust the subwoofer to obtain the optimum volume and tone balance between the subwoofer and the front speakers by followi ng the procedures described below. 1 Set the VOLUME control to minim um (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 pres ...
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Yamaha YST-SW325 - page 17
13 ADJUSTING THE SUBWOOFER BEFORE USE This subw oofer’ s frequency cha racteristics The figures below show the optimum adjustment of each co ntrol and the frequency characteristics when this subwoofer is combined with a typical front spea ker system. ■ EX.1 When combined with a 4” or 5” (10 cm or 13 cm) acoustic suspensi on, 2 way system fr ...
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Yamaha YST-SW325 - page 18
14 In 1988, Yamaha brought to the marketplace speaker systems utilizing YST (Yamaha Active Servo Technology) to give powerful, high qual ity bass reproduction. This technique uses a di rect connection between the amplifier and speaker, allowing accura te signal transm ission and precise speaker control. As this technology uses spea ker units contro ...
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Yamaha YST-SW325 - page 19
15 Refer to the chart below when this unit does not function p rope rly. If the problem you are expe riencing is not listed below or if the instructions given below do not help, disconnect the power cord and contact your authoriz ed YAMAHA dealer or service center. TR OUBLESHOO TING Problem Cause What to Do Power is not supplied even though the ST ...
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Yamaha YST-SW325 - page 20
Type ...... Advanced Yamaha Ac tive Servo Technology II Driver ........... ........... ......... ........... 20 cm (8”) c one woofer Magnetic shielding type Amplifier Output (100 Hz, 5 ohms, 10% THD) ....................................................... ........... .............. 150 W Frequency Respons e ........... ......... ........... 25 Hz ...
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