Instruction/ maintenance manual of the product YST-SW120 Yamaha
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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.
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.
3 FCC INFORMATION 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 hearing.
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.
5 • Before attempting to make any connections to or from this unit, be sure to first switch OFF the power to this unit and to any other components to which connections are being made.
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.
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.
8 Front panel Rear panel 1 POWER indicator Illuminates when the POWER switch is turned ON, and goes off when turned OFF. 2 POWER switch Turns the power of this unit ON and OFF whenever pressed. When this switch is turned ON, the indicator over the POWER switch on the front panel illuminates.
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.
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.
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.
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.
An important point after buying a device Yamaha YST-SW120 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Yamaha YST-SW120 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Yamaha YST-SW120 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Yamaha YST-SW120 you will learn all the available features of the product, as well as information on its operation. The information that you get Yamaha YST-SW120 will certainly help you make a decision on the purchase.
If you already are a holder of Yamaha YST-SW120, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Yamaha YST-SW120.
However, one of the most important roles played by the user manual is to help in solving problems with Yamaha YST-SW120. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Yamaha YST-SW120 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
