Yamaha YST-SW225 manual

YST-SW225 Subwoofer System UB OWNER’S MANUAL YST-SW225UB.book Page 1 Tu es day, July 27, 2004 10:25 AM[...]

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[...]

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[...]

iii Thank you for selecting th is 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[...]

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[...]

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[...]

3 ( : subwoofer, : front 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 front speaker. (See fig. .) If using two subwoof ers, it is recommende d to place [...]

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: Unplug the s ubwoofer and other audio/video components bef ore making connections[...]

5 CONNECTIONS ■ Using one subwoofer ■ Using two subwoofers 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 c[...]

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[...]

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 (with speaker cables) ■ Using two subwoofe rs (with speaker cables)[...]

8 CONNECTIONS For connection, keep the sp eaker 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 correctl y. If these[...]

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 the automatic power- switching function. Goes off when the subwoofer is set in the standby mode. 2 STANDBY/ON button Press this button to turn on the power when the POWER switch is set in the ON posit[...]

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[...]

11 This function automatic ally switches th e unit between standby and p ower-on modes. The subwoofer automatically places itself in standby mode if it does not receive an input signal for 7 or 8 minutes. (The power indicator lights red.) When the subwoofer detects a ba ss signal input of below 200 Hz, it automatically places it self in power-on mo[...]

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[...]

13 ADJUSTING THE SUBWOOFER BEFORE USE This subw oofer’ s frequency c haracteristics 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[...]

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[...]

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 [...]

Type ..... ..... Advanced Yamaha Active Servo Technology Driver ........... ........... ............. .......20 c m (8”) cone woofer Magnetic shielding type Amplifier Output (100 Hz, 5 ohms, 10% THD) ....................................................... ........... .............. 120 W Frequency Respons e ........... ......... ........... 28 Hz[...]