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UB
YST-SW305/205
Active Servo Processing Subwoofer System
OWNER’S MANUAL
I
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• Explanation of Graphical Symbols CAUTION The lightning flash with arrowhead RISK OF ELECTRIC SHOCK symbol, within an equilateral triangle, DO NOT OPEN is intended to alert you to the presence of uninsulated “dangerous CAUTION: TO REDUCE THE RISK OF voltage” within the product’s ELECTRIC SHOCK, DO NOT REMOVE enclosure that may be of sufficient COVER (OR BACK). NO USER-SERVICEABLE magnitude to constitute a risk of electric shock to persons. PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERS
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FCC INFORMATION (for US customers only) 1. IMPORTANT NOTICE : DO NOT MODIFY THIS Compliance with FCC regulations does not guarantee that UNIT! interference will not occur in all installations. If this This product, when installed as indicated in the product is found to be the source of interference, which instructions contained in this manual, meets FCC can be determined by turning the unit “OFF” and “ON”, requirements. Modifications not expressly approved please try to eliminate the problem b
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UNPACKING After unpacking, check that the following item is contained. Nonskid pads IV
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Thank you for selecting this YAMAHA Subwoofer System. CAUTION: Read this before operating your unit. To assure the finest performance, please read this manual If you hear distorted noise (i.e., unnatural, intermittent “rapping” carefully. Keep it in a safe place for future reference. or “hammering” sounds) coming from this unit, reduce the volume level. Extremely loud playing of a movie soundtrack’s low Install this unit in a cool, dry, clean place – away from windows, frequency, bass-heav
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CONTENTS SAFETY INSTRUCTIONS ....................... II CONTROLS AND THEIR FUNCTIONS ... 8 UNPACKING ........................................... IV AUTOMATIC POWER-SWITCHING FUNCTION............................................... 9 CAUTION .................................................. 1 ADJUSTING THE SUBWOOFER FEATURES ............................................... 2 BEFORE USE ........................................ 10 Frequency characteristics.................... 11 PLACEMENT ..........
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PLACEMENT Å ı Ç ( : subwoofer, : main speaker) One subwoofer will have a good effect on your audio Note system, however, the use of two subwoofers is There may be a case that you cannot obtain enough super- recommended to obtain more effect. bass sounds from the subwoofer when listening in the center of the room. This is because “standing waves” have If using one subwoofer, it is recommended to place it on the been developed between two parallel walls and they cancel outside of e
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CONNECTIONS Caution: Plug in the subwoofer and other audio/video components after all connections are completed. • All connections must be correct, that is to say L (left) to L, R (right) to R, “+” to “+” and “–” to “–”. Also refer to the owner’s manual for each of your components. • Basically, connect the subwoofer to the line output (pin jack) terminal(s) of the amplifier. (Refer to pages 4 and 5 for details.) If your amplifier does not have any line output terminal, connect the subwoofer to
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Using two subwoofers Right main speaker Left main speaker OUTPUT INPUT OUTPUT INPUT 2 2 TO SPEAKERS TO SPEAKERS + – – + + – – + /MONO /MONO + – – + + – – + FROM AMPLIFIER FROM AMPLIFIER INPUT INPUT 1 1 Subwoofer Subwoofer OUTPUT INPUT AUTO PHASE OUTPUT INPUT AUTO PHASE TO SPEAKERS 2 STANDBY TO SPEAKERS 2 STANDBY + – – + + – – + /MONO /MONO + – – + + – – + OFF HIGH OFF HIGH LOW NORM REV LOW NORM REV FROM AMPLIFIER FROM AMPLIFIER INPUT INPUT 1 1 POWER POWER ON ON OFF OFF SPLIT SUBWOOFER Amplifie
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Connecting to speaker output terminals of the amplifier Using one subwoofer If your amplifier has only one set of main 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 main speakers. Right main speaker Left main speaker OUTPUT INPUT 2 TO SPEAKERS + – – + /MONO + – – + Subwoofer OUTPUT INPUT AUTO PHASE TO SPEAKERS 2 STANDBY + – – + FROM AMPLIFIER /MONO + – – + INPUT O
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Using two subwoofers 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 main speakers. Right main speaker Left main speaker OUTPUT INPUT OUTPUT INPUT 2 2 TO SPEAKERS TO SPEAKERS + – – + + – – + /MONO /MONO + – – + + – – + Subwoofer Subwoofer OUTPUT INPUT AUTO PHASE FROM AMPLIFIER FROM AMPLIFIER OUTPUT INPUT AUTO PHASE TO SPEAKERS 2 STANDBY TO SPEAKERS 2 STANDBY + – – + + – – + INPUT INPUT /MON
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CONTROLS AND THEIR FUNCTIONS Front panel SUPERWOOFER SYSTEM YST-SW205 STANDBY/ B.A.S.S. HIGH CUT VOLUME ON MOVIE MUSIC 40Hz 140Hz 0 10 STANDBY/ B.A.S.S. HIGH CUT VOLUME ON MOVIE MUSIC 40Hz 140Hz 0 10 POWER ON OUTPUT INPUT AUTO PHASE OUTPUT INPUT AUTO PHASE TO SPEAKERS 2 STANDBY + – – + 2 STANDBY TO SPEAKERS OFF /MONO + – – + + – – + OFF HIGH LOW NORM REV FROM AMPLIFIER INPUT 1 POWER ON /MONO OFF + – – + OFF HIGH VOLTAGE LOW NORM REV SELECTOR VOLTAGE SELECTOR FROM AMPLIFIER INPUT 1 Rear panel *Il
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¤ OUTPUT (TO SPEAKERS) terminals › PHASE switch Can be used for connecting to the main speakers. Normally this switch is to be set to the REV (reverse) Signals from the INPUT1 terminals (‹) are sent to position. However, according to your speaker systems these terminals. or the listening condition, there may be a case when (Refer to “CONNECTIONS” for details.) better sound quality is obtained by setting this switch to the NORM (normal) position. Select the better position # INPUT2 terminals by m
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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 main speakers by following the procedures described below. Rear panel Front panel SUPERWOOFER SYSTEM YST-SW205 STANDBY/ B.A.S.S. HIGH CUT VOLUME ON MOVIE MUSIC PHASE STANDBY/ B.A.S.S. HIGH CUT VOLUME 40Hz 140Hz 0 10 ON MOVIE OUTPUT INPUT AUTO PHASE MUSIC 2 STANDBY + TO SPEAKERS – – + /MONO + – – + OFFLOWHIGH NORM REV FROM AMPLIFIER INPUT
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Frequency characteristics This subwoofer’s frequency characteristics YST-SW305 YST-SW205 dB dB HIGH CUT 40 Hz HIGH CUT 90 Hz HIGH CUT 90 Hz 90 90 HIGH CUT 140 Hz HIGH CUT 140 Hz 80 80 70 70 60 60 HIGH CUT 40 Hz 50 50 40 40 20 50 100 200 500Hz 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 main speaker system. EX.1 When combined with a 4” or 5” (10 cm or 13 cm) acoustic suspension,
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ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY The theory of Yamaha Active Servo Technology has been By employing negative-impedance drive circuits, the based upon two major factors, the Helmholtz resonator and amplifier is able to generate precise, low-amplitude, low- negative-impedance drive. Active Servo Processing frequency waves with superior damping characteristics. speakers reproduce the bass frequencies through an “air These waves are then radiated from the cabinet opening as woofer”, which is
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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 cable and contact your authorized YAMAHA dealer or service center. Cause Problem What to Do The power cable is not plugged in, or Power is not supplied even Plug the power cable into an AC outlet the POWER switch is set to the OFF though the STANDBY/ON button and/or set the POWER switch to
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SPECIFICATIONS Type ............... Advanced Yamaha Active Servo Technology Power Consumption YST-SW305 ................................................................ 80W Driver YST-SW205 ................................................................ 70W YST-SW305 .................................. 20 cm (8”) cone woofer, (In the standby mode: 0.8W) Magnetic shielding type x 2 YST-SW205 .................................. 20 cm (8”) cone woofer, Dimensions (W x H x D) Magnetic shielding type
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YAMAHA ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A. YAMAHA CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA YAMAHA ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR. 22-34, 25462 RELLINGEN BEI HAMBURG, F.R. OF GERMANY YAMAHA ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE YAMAHA ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH RO
