User manual YAMAHA YST-C10

[. . . ] A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 10 Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. 11 Only use attachments/accessories specified by the manufacturer. 12Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. [. . . ] For example, if 20 Hz-50 Hz sine waves from a test disc, bass sounds from electronic instruments, etc. are continuously outputted, or when the stylus of a turntable touches the surface of a disc, reduce the volume level to prevent this unit from being damaged. · If you hear distorted noise (i. e. , unnatural, intermittent "rapping" or "hammering" sounds) coming from this unit, reduce the volume level. Extremely loud playing of a movie soundtrack's low frequency, bass-heavy sounds or similarly loud popular music passages can damage this speaker system. · Vibration generated by super-bass frequencies may distort images on a TV. In such a case, move this unit away from the TV set. · Do not attempt to clean this unit with chemical solvents as this might damage the finish. · Be sure to read the "TROUBLESHOOTING" section regarding common operating errors before concluding that the unit is faulty. · Install this unit near the wall outlet and where the AC power plug can be reached easily. · Secure placement or installation is the owner's responsibility. YAMAHA shall not be liable for any accident caused by improper placement or installation of speakers. 11 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 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 11 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. · The HIGH CUT switch provides you with two positions (HIGH and LOW) to adjust the tone balance between the subwoofer and the front speakers. SUPPLIED ACCESSORIES After unpacking, check that the following parts are contained. Non-skid pads (1 set, 4 pieces) 1 PLACEMENT A One subwoofer will have a good effect on your audio system, however, the use of two subwoofers is recommended to obtain more effect. If using one subwoofer, it is recommended to place it on the outside of either the right or the left front speaker. A . ) If using two subwoofers, it is recommended to place them on the outside of each front speaker. C is also possible, however, if the subwoofer system is placed directly facing the wall, the bass effect may lessen because the sound from it and the sound reflected by the wall may cancel out each other. If the amplifier has only one set of PRE OUT terminals, do not connect the subwoofer to the PRE OUT terminals. Instead, connect the subwoofer to the speaker output terminals of the amplifier. [. . . ] 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. Cabinet High-amplitude bass sound Port Air woofer (Helmholtz resonator) Advanced impedance Converter Active Servo Processing Amplifier Signals Signals of low amplitude 11 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. Problem Power is not supplied even though the POWER switch is set to the ON position. Cause The power plug is not securely connected. [. . . ]