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Yamaha YST-SW150/80 manual

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Table of contents for the manual

  • Page 1

    IMPORTANT! Please record the serial number of this unit in the space below. Model: Serial No.: The serial number is located on the rear of the unit. Retain this Owner’s Manual in a safe place for future reference. WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. RISK OF ELECTRIC SHOCK DO NOT OPEN [...]

  • Page 2

    2 1 Read Instructions – All the safety and operating instructions should be read before the unit is operated. 2 Retain Instructions – The safety and operating instructions should be retained for future reference. 3 Heed Warnings – All warnings on the unit and in the operating instructions should be adhered to. 4 Follow Instructions – All op[...]

  • Page 3

    3 FCC INFORMATION (for US customers only) 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 distortion – and, most importantly, without affecting your sensitive[...]

  • Page 4

    4 • This subwoofer system employs YAMAHA Active Servo Technology which YAMAHA developed for reproducing higher quality super-bass sound. (Refer to page 11 for details on Active Servo Technology.) This unit does not only enhance bass frequency response of sound output in your audio system, but, by reproducing the bass frequencies, the subwoofer pe[...]

  • Page 5

    To AC outlet This unit OUTPUT INPUT1 TO SPEAKERS FROM AMPLIFIER INPUT2 PHASE ON OFF AUTO POWER NOM REV OUTPUT INPUT2 PHASE TO SPEAKERS INPUT1 FROM AMPLIFIER ON OFF AUTO POWER NOM REV Right speaker Left speaker Amplifier To AC outlet This unit Right speaker Left speaker Amplifier OUTPUT INPUT1 TO SPEAKERS FROM AMPLIFIER INPUT2 PHASE ON OFF AUTO POWE[...]

  • Page 6

    6 If y our amplifier has tw o sets of speaker terminals For connections, cut the speaker wires as short as possible. If the connections are faulty, no sound will be heard from the speakers. Make sure that the polarity of the speaker wires is correct, that is, + and – markings are observed. If these wires are reversed, the sound will be unnatural [...]

  • Page 7

    7 CONNECTING T O LINE OUTPUT (PIN JA CK) TERMINALS OF THE AMPLIFIER • Leave the main speakers connected to the amplifier. • Amplifier line output terminals are generally labeled PRE OUT or SUBWOOFER OUT. * For PRE OUT terminal connection, the amplifier must possess at least two sets of PRE OUT terminals. With some amplifiers with only one set o[...]

  • Page 8

    8 Front panel Rear panel 1 POWER indicator Lights up when the POWER switch is turned ON, and goes off when turned OFF. * < For U.K. and Europe models only > If the AUTO POWER ON/OFF switch on the rear panel is set to ON, this indicator is illuminated dimly when no signal is input to this unit. 2 POWER switch Turns the power of this unit ON an[...]

  • Page 9

    9 1 Set the VOLUME control to minimum. 2 Turn on the power supply to all the components. 3 Play any source and adjust the amplifier’s volume control to the desired listening level. 4 Turn up the VOLUME control gradually to adjust the volume balance between this unit and the main speakers. 5 Adjust the HIGH CUT control to the position where the de[...]

  • Page 10

    10 FREQUENCY CHARA CTERISTICS Adjustment of the VOLUME control, the HIGH CUT control and the PHASE switch should be changed according to the main speakers, listening condition, source, etc. Following figures show the optimum adjustment of each control and the frequency characteristics when this unit is combined with a typical speaker system. This u[...]

  • Page 11

    11 A CTIVE SER V O TECHNOLOGY The theory of Active Servo Technology is based upon two major factors, the Helmholtz resonator and negative- impedance drive. Active Servo Processing speakers reproduce the bass frequencies through an “air woofer”, which is a port or opening in the speaker’s cabinet. This opening is used instead of, and performs [...]

  • Page 12

    SYMPTOM Power is not supplied even though the POWER switch is ON. No sound . Sound level is too low. CAUSE The power plug is not securely connected. The VOLUME control is set to 0. Speaker cables are not connected securely. Speaker cables are connected incorrectly. Setting of the PHASE switch is not proper. A source sound with few bass frequencies [...]