User manual YAMAHA YC20E

[. . . ] If you should move, or if any doubt exists about the supply voltage in your area, please contact your dealer for supply voltage verification and (if applicable) instructions. the required supply voltage is printed on the name plate. For name plate location, please refer to the graphic found in the Special Message Section of this manual. The power supply cord (plug) should be disconnected from the outlet when electronic products are to be left unused for extended periods of time. [. . . ] Care should be taken that objects do not fall and liquids are not spilled into the enclosure through any openings that may exist. DANGER-Grounding Instructions: This product must be grounded and therefore has been equipped with a three pin attachment plug. If this product should malfunction, the ground pin provides a path of low resistance for electrical current, reducing the risk of electrical shock. If your wall socket will not accommodate this type plug, contact an electrician to have the outlet replaced in accordance with local electrical codes. Objects have fallen, been inserted, or liquids have been spilled into the enclosure through openings; or c. WARNING: Do not place this product or any other objects on the power cord or place it in a position where anyone could walk on, trip over, or roll anything over power or connecting cords of any kind. The use of an extension cord is not recommended!If you must use an extension cord, the minimum wire size for a 25' cord (or less) is 18 AWG. This product, either alone or in combination with an amplifier and headphones or speaker/s, may be capable of producing sound levels that could cause permanent hearing loss. DO NOT operate for a long period of time at a high volume level or at a level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult an audiologist. G For safety, always remove the power plug from the AC wall outlet if there is any danger of lightning striking in your area. G Keep the amplifier away from neon signs or fluorescent lighting to prevent noise pickup. G To prevent damage and possibly electrical shock, never open the case and tamper with the internal circuitry. G Never use benzene, thinner or other volatile liquids for cleaning, as these chemicals may cause damage or discoloration to the finish. Always use a dry, soft cloth to wipe off dust and dirt. * Before making any connections, make sure that the power switch is set to OFF. Controls the level of their respective frequencies. tREBLE (high frequencies) , MIDDLE (middle frequencies) , BASS (low frequencies). When set to "0", the tone will be flat, rotate the knob to the left (minus) to cut the frequency, and rotate to the right (plus) to boost the frequency. The signal received via the INPUT jack is transmitted from this jack although with its impedance converted (the signal also bypasses the equalizer circuit). When adding another powered speaker unit, such as another YC20E, connect the additional unit to this jack. [. . . ] When adding another powered speaker unit, such as another YC20E, connect the additional unit to this jack. Set to ON (>), the equalizer circuit is active and the three knobs r can be used to adjust their respective frequencies. ) if you want to produce only the direct sound created by the external device, with no additional alteration. When the switch is depressed, the lamp next to the switch will light. [. . . ]