Yamaha YST-SW225 Owner's Manual
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Yamaha YST-SW225 Owner's Manual

Yamaha subwoofer system
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UB
YST-SW225
Subwoofer System
OWNER'S MANUAL

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Summary of Contents for Yamaha YST-SW225

  • Page 1 YST-SW225 Subwoofer System OWNER’S MANUAL...

  • Page 2: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS 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.
  • Page 3 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...
  • Page 4 Thank you for selecting this YAMAHA subwoofer system. CAUTION: Read this before operating your unit Please read the following operating precautions before use. YAMAHA will not be held responsible for any damage and/or injury caused by not following the cautions below.

  • Page 5: Table Of Contents

    CONTROLS AND THEIR FUNCTIONS ... 9 AUTOMATIC POWER-SWITCHING FUNCTION ... 11 Changing the AUTO STANDBY setting ...11 ADJUSTING THE SUBWOOFER BEFORE USE ... 12 Frequency characteristics ...13 ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY II ... 14 TROUBLESHOOTING ... 15 SPECIFICATIONS ...Backcover...

  • Page 6: Features

    • 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.

  • Page 7: Placement

    : subwoofer, : front speaker) PLACEMENT 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.

  • Page 8: Connections

    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: Unplug the subwoofer and other audio/video components before making connections.

  • Page 9: Using Two Subwoofers

    ■ Using one subwoofer Subwoofer AUTO STANDBY HI G H OUTPUT INPUT PHASE TO SPEAKERS /MONO NORM REV INPUT 1 FROM AMPLIFIER VOLTAGE SELECTOR POWER 220V-240V 110V-120V To AC outlet Amplifier ■ Using two subwoofers OUTPUT TO SPEAKERS INPUT 1 FROM AMPLIFIER Subwoofer AUTO...

  • Page 10: Connecting To Speaker Output Terminals Of The Amplifier

    CONNECTIONS 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. •...
  • Page 11 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 Subwoofer...

  • Page 12: Connecting To The Input1/ Output Terminals Of The Subwoofer

    CONNECTIONS Connecting to the INPUT1/OUTPUT terminals of the subwoofer 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.

  • Page 13: Controls And Their Functions

    CONTROLS AND THEIR FUNCTIONS Front panel AUTO STANDBY HI G H OUTPUT INPUT PHASE TO SPEAKERS /MONO NORM REV INPUT 1 FROM AMPLIFIER VOLTAGE VOLTAGE SELECTOR 220V-240V POWER SELECTOR 110V-120V 220V-240V 110V-120V Rear panel (General model) 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.
  • Page 14 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.

  • Page 15: Automatic Power-Switching Function

    AUTOMATIC POWER-SWITCHING FUNCTION This function automatically switches the unit between standby and power-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 bass signal input of below 200 Hz, it automatically places itself in power-on mode.

  • Page 16: Adjusting The Subwoofer Before Use

    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. Set the VOLUME control to minimum (0). Turn on the power of all the other components.

  • Page 17: Frequency Characteristics

    *This diagram does not depict actual frequency response characteristics accurately. Frequency characteristics HIGH CUT 90 Hz HIGH CUT 140 Hz 500Hz Front speaker Frequency response graph* YST-SW225 Front speaker Frequency response graph* ADJUSTING THE SUBWOOFER BEFORE USE YST-SW225 500Hz 500Hz...

  • Page 18: Advanced Yamaha Active Servo Technology Ii

    ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY II 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.

  • Page 19: 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.

  • Page 20: Specifications

    YAMAHA ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD18 7GQ, ENGLAND YAMAHA SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, 400 43 VÄSTRA FRÖLUNDA, SWEDEN YAMAHA MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA SPECIFICATIONS Power Consumption...65 W...

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