The Bosch high-efficiency horn speaker provides exceptional

 voice playback and sound transmission effects, suitable for a variety of outdoor applications. They are ideal for applications such as stadiums, parks, exhibitions, factories and swimming pools. System overview LBC 3481 / 12 is a round horn speaker, while LBC 3491 / 12 is a rectangular horn speaker. Both loudspeakers have a power of 10 W and are made of ABS material. The LBC 3492 / 12 is a 20 W round horn speaker with a large horn diameter of 354 mm. It is made of aluminum material and ABS material, not only high strength but also light. The horn edge is covered with PVC profiles to prevent damage from impact. The LBC 3493 / 12 is a 30 W round horn speaker with a large horn diameter of 400 mm. It is made of aluminum material and ABS material, not only high strength but also light. The horn edge is covered with PVC profiles to prevent damage from impact. Basic function all four models can be directly connected to 100 V line output, and the coating is light gray (RAL 7035). These horn loudspeakers are waterproof and dustproof. Horn speakers come with a 100 V transformer and jumper connectors on the primary winding can be used for different power settings. By connecting the amplifier output to the appropriate connector, the user can easily select rated full power, half power or quarter power (with an amplitude of 3 dB). The horn speaker is equipped with a 2m long four core cable. Each core has a different color and is connected to one of the taps on the transformer. The horn speaker is equipped with a solid adjustable steel mounting bracket to accurately orient the sound beam. Certificate and accreditation all Bosch loudspeakers meet IEC 268-5 power handling capacity (PHC) standard and can operate continuously for 100 hours at rated power. In addition, Bosch has conducted simulated acoustic feedback exposure (SAFE) tests to ensure that they can withstand twice the rated power in a short period of time. This ensures high reliability of loudspeakers in extreme conditions, improves customer satisfaction, extends service life, and significantly reduces the probability of failure or performance degradation. Safety in accordance with en 60065, flame retardant in accordance with UL 94 V0, waterproof and dustproof in accordance with en 60529-ip65 regional certification European CE declaration of conformity CE

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