If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and contact your authorized YAMAHA dealer or service center for help.
| SYMPTOM | CAUSE | REMEDY |
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| Power is not supplied even though the | The power plug is not securely connected. | Connect it securely. |
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| POWER switch is ON. |
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| No sound . | The VOLUME control is set to 0. | Turn the VOLUME control to right. |
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| Speaker cables are not connected securely. | Connect them securely. |
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| Sound level is too low. | Speaker cables are connected incorrectly. | Connect them correctly, that is to say L (left) |
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| to L, R (right) to R, “+” to “+” and | |
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| Setting of the PHASE switch is not proper. | Set the switch to the other position. | |
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| A source sound with few bass frequencies is | Play a source sound with bass frequencies. | |
| played. | Set the HIGH CUT control to a higher | |
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| position. (Turn the knob to right.) | |
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| It is influenced by standing waves. | ||
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| parallel surface by placing bookshelves etc. | |
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| along the walls. | |
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| Type ..................... | Active Servo Processing Subwoofer System | Power Consumption........................................................ | 100W | ||||
Speaker Unit ................. | 18 cm | Dimensions (W x H x D) ............. | 215 mm x 590 mm x 412 mm | ||||
| Amplifier Output |
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| Weight ..................................................... | ||||
| 70W/5 ohms (THD 0.1%, 100 Hz) | 15.5 kg (34 lbs. 2 oz.) | ||||||
| 40 |
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| Frequency Response | .......................... | 21 |
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| Power Supply |
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| * Please note that all specifications are subject to change | |||
U.S.A. and Canada models........................ | AC 120V, 60 Hz | without notice. |
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Australia and U.K. models......................... | AC 240V, 50 Hz |
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Europe model ............................................. |
| AC 230V, 50 Hz |
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| General model | .................. | AC 110/120/220/240V, 50/60 Hz |
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Type ..................... | Active Servo Processing Subwoofer System | Power Consumption.......................................................... | 70W | ||||
Speaker Unit ................. | 18 cm | Dimensions (W x H x D) ............. | 210 mm x 475 mm x 360 mm | ||||
Amplifier Output |
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| Weight ........................................................ | ||||
| 50W/6 ohms (THD 0.1%, 100 Hz) | 10 kg (22 lbs. 0 oz.) | ||||||
| 50 |
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Frequency Response | .......................... | 25 |
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Power Supply |
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| * Please note that all specifications are subject to change | |||
U.S.A. and Canada models........................ | AC 120V, 60 Hz | without notice. |
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Australia and U.K. models......................... | AC 240V, 50 Hz |
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Europe model ............................................. |
| AC 230V, 50 Hz |
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General model | .................. | AC 110/120/220/240V, 50/60 Hz |
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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.
YAMAHA ELECTRONIQUE FRANCE S.A. 17 RUE DES CAMPANULES, LOGNES 77321 MARNE LA VALLEE CEDEX 2, FRANCE
YAMAHA ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD1 7JS, ENGLAND
YAMAHA SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, 400 43 VÄSTRA FRÖLUNDA, SWEDEN
YAMAHA MUSIC AUSTRALIA PTY, LTD.
| Printed in Japan |