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The lb2-ucxx-x1 super sound box is used to clearly reproduce voice, foreground and background music in general indoor and outdoor applications. The super sound box series offers 15 W and 30 W models in light or dark colors. The speaker can choose 8 ohms, 70 V and 100 V inputs. The ABS speaker is equipped with an aluminum front mask and a standard aluminum stand. Typical applications include theme bars, music restaurants, theme parks, retail stores, video stores, conference rooms and offices, display areas, exhibition halls, fitness centers, and performance environments. Certificate and approved quality guarantee that all Bosch speakers meet IEC 268-5 power handling capacity (PHC) standard and can operate continuously for 100 hours at rated power. Bosch has also conducted simulated acoustic feedback exposure tests to ensure they can withstand twice the rated power in a short period of time. This ensures a higher reliability of the speaker under extreme conditions, improves customer satisfaction, extends service life, and significantly reduces the chance of failure or performance degradation. Security in accordance with EN 60065 standard waterproof and dustproof in accordance with EN 60529 IP 65 standard fire retardant UL 94 V 0 standard chlorine resistance IEC60068-2-42 standard corrosion resistance in IEC60068 ? 2-52 standard salt fog IEC60068 ? 2-11 standard installation/configuration speakers built-in transformer, Users are allowed to select rated full power, half power, quarter power or one-eighth power output (i.e., 3-db step) or 8-ohm bypass for 70v and 100v circuits. The user can easily use the switch at the back of the case. The speaker is connected with a 2-meter-long, two-core speaker cable that matches the color of the speaker box. The end of the cable has been peeled for ease of use. The mounting bracket is assembled with anti-theft Torx screw and covered with a plastic cover of color matching the cabinet. The speaker can be mounted horizontally so that the speaker is facing up or down, or vertically so that the speaker is facing left or right through a steel u-frame. The sound box logo can be rotated flexibly to match the installation direction.