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LC2 PC30G6?8 is an elegant 8-inch 2-minute super acoustic smallpox speaker with wide diffusion angles, high output power, and easy installation. Music and voice can be reproduced in the United States. It consists of a reflector assembly, a surface net, a bottom box, an 8-inch coaxial twin-frequency speaker, and an internal output power matching transformer. The speaker USES a titanium - plated circular treble unit with waveguide coupling. The bottom box provides optimized inner box volume, which can achieve stronger low-frequency sound effect. The speaker USES a second order frequency division network with a frequency of 3.3 kHz and a comprehensive protection circuit, which can protect the network, the bass unit and the high-pitch unit driving unit, and prevent them from bearing too much power. The speaker can be installed in conjunction with the optional LC2? pc60g6-10 small ceiling bass unit to enhance the bass reproduction frequency to 45 Hz. The basic function voice alarm loudspeaker voice alarm loudspeaker is specially designed to be used in buildings with many strict requirements on the performance of the voice evacuation broadcasting system. LC2 pc30g6-8 is designed for voice alarm system, and conforms to British BS 5839-8 standard and EN 60849 standard. Built-in protection function of protective loudspeaker. In case of fire, this protection function can ensure that the damage to the loudspeaker will not lead to the failure of the circuit connected to it. In this way, the integrity of the system is maintained to ensure that the loudspeakers in other areas can still communicate to people in a timely manner. It is marked with a bottom box to enhance the protection of cable terminals. The speaker is accompanied by a ceramic screw terminal junction box and a temperature fuse that meets the emergency criteria. All Bosch loudspeakers are certified to meet IEC 268-5 power amplifier (PHC) standards 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 higher reliability in 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 emergency in accordance with BS 5839 ? eight/EN 60849 standard certification European CE installation/configuration speaker through the integration of four hinge tight arm mounted to the ceiling, can be applied to all kinds of ceiling structure. The girder holder /C ring attached to the beam is securely mounted on a ceiling suspended from a ceiling of 4-25 millimetres (0.16-1.0 inches) thick with a mineral wool board or other fiber ceiling tiles.