OWNER'S MANUAL
IMPORTANT SAFETY INSTRUCTIONS 1 Read these instructions. 2 Keep these instructions. 3 Heed all warnings. 4 Follow all instructions. CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. 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.
FCC I~FORMATION (for US customers) We Want You Listening For A Lifetime 1 IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT! This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not expressly approved by Yamaha may void your authority, granted by the FCC, to use the product. 2 IMPORTANT: When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s supplied with this product MUST be used.
Thank you for selecting this YAMAHA subwoofer system. CAUTION: Read this before operating your unit Please read the following operating precautions before use. YAMARA will not be held responsible for any damage and/or injury caused by not following the cautions below. • To assure the finest performance, please read this manual carefully. Keep it in a safe place for future reference.
• 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. 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.
FEATURES • 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.
PLACEMENT : subwoofer, D: front speaker) • 6-=:;;....
CONNECTIONS Choose one of the following two connecting methods that is more suitable for your audio system. • Choose [j] (pages 4-5) if your amplifier has line output (pin jack) terminal(s) .Choose [g] (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. Notes • All connections must be correct, that is to say L (left) to L, R (right) to R, "+" to "+" and "-" to "-".
CONNECTIONS • Using one subwoofer Subwoofer Mono pin cable (not included) Audio pin cable (not included) To AC outlet (Q SPLIT SUBWOOFER (0~------------------- Amplifier ® I· ~---------_J_------=1IiI1tiliiiTIU I ® 11111111----- SUBWOOFER .Using two subwoofers ;---------c=lI-II~~iiiiiiiil--------------- Mono pin cable(not included) - F - INPUT 1 bx"="",,,,-.
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 INPUTI terminals of the subwoofer, and connect the other set of front speaker output terminals of the amplifier to the front speakers.
CONNECTIONS If your amplifier has only one set of front speaker output terminals. Connect the speaker output terminals of the amplifier to the INPUTI terminals of the subwoofer, and connect the OUTPUT terminals of the subwoofer to the front speakers. • Using one subwoofer (with speaker cables) Left front speaker Right front speaker (0) (0) ~ ~ m m Amplifier To AC outlet Speaker output terminals .
CONNECTIONS 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 cables are observed and set correctly. If these cables are reversed, the sound will be unnatural and lack bass.
CONTROLS AND THEIR FUNCTIONS 1 / '\f/",B,_,',",A~S \ ~ STA"N""D,B,Y",I",D,N ;\ \ ) __ ,',S', !:, ':,', ." '"'?'"',~",',, 1// ~,"'t,·, HIGH",C"U,T_',F",I,L,:rER , : : \ ) ~, ,,;-ov::' ,.MUSIC LC PASS .,.ON ~ 50H, A " . , 'SOH, " 0 '0 • Control panel Front panel AUTO STANDBY HGH LOW OFF Rear panel (General model) o Power indicator Lights up in green while the subwoofer is on.
CONTROLS AND THEIR FUNCTIONS o o 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 10Hz. VOLUME control Adjusts the volume level. Turn the control clockwise to increase the volume, and counterclockwise to decrease the volume. 8 POWER switch Normally, set this switch to the ON position to use the subwoofer.
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. (The power indicator lights green.) 1 2 Set the subwoofer to standby. Change the AUTO STANDBY setting.
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. HIGH CUT y VOLUME STANDBY/ON 1 2 5 1 Set the VOLUME control to minimum (0). 8 8 Turn on the power of all the other components. Make sure that the POWER switch is set to the ON position, then press the STANDBYION button to turn on the subwoofer.
ADJUSTING THE SUBWOOFER BEFORE USE This subwoofer's frequency characteristics dB HIGH CUT 90 Hz ~ /.. 80 I I I / 90 \ ~ / \ 70 ~ 60 HIG H CUT 140 Hz \,/ \ \ \ \ r-HIGH CUT \ r- 40 H~ \ 50 40 20 50 100 \ \ \ \ \ 200 \ \\ 500Hz 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.
ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY II 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.
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. 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. The volume is set to minimum. Raise the volume up.
SPECIFICATIONS Type Advanced Yamaha Active Servo Technology Driver 20 cm (8") cone woofer Magnetic shielding type Power Consumption 65 W Standby Power Consumption 0.5 W Amplifier Output (100 Hz, 5 ohms, 10% THD) ................................................................................ 120W Dimensions (W x H x D) .......................................
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YAMAHA ~ome Audio produ~ts are desig~ed and manufactured to provide a high level of trouble-free performance. YAMAHA Electronics Corporation, USA, is proud of the expenenced craftsmanshIp that goes Into each and every YAMAHA Home Audio product. YAMAHA sells its Home Audio products only through a network of high quality, specially authorized dealers and is pleased to offer the following Limited Warranty, which applies only to products purchased from our authorized dealers.