Directional electro-acoustic transducers comprising a sealed sell consisting of two portions

The invention relates to directional electro-acoustic transducers compris a sealed shell consisting of two portions. A transducer according to the invention comprises one or more electro-acoustic drivers (1) composed for example of a stack of piezoelectric plates (1a, 1b, . . . 1n) located inside a sealed shell. This shell comprises a first portion (3A) symmetrical as to a plane (PP') fitted with two flanges at its ends, these flanges being coupled mechanically and acoustically by means of a rod (7) and two bolts (8) With each driver (1). The shell includes a second portion (3b) which is complementary to the first portion and which is acoustically uncoupled from the first portion and from the drivers. An application of the invention is the construction of low-frequency transmitter of acoustic waves in the water in a given direction.