Sound device and ship comprising the device

摘要

An announcement system and a ship including the same are provided to be easily installed in a large ship at a low cost by reducing the length of a cable. Two announcement amplifiers(1,2) are provided for multiple speakers, and are connected with two end portions(EL1,EL2) of an announcement line(L) that administers the speakers in a head-to-tail manner. At least one head-to-tail line control module(7) is installed on the announcement line(L) and normally opened. The announcement line(L) includes short circuit and cutoff management modules(8) that are normally connected between at least one of the two end portions(EL1,EL2) and the line control module(7).