The seemingly impossible task of producing one-half of a megawatt of acoustic power underwater at a frequency of 5 hz is addressed. the exploitation of the recent introduction of new rare earth permanent magnet materials, the concept of using a flexural disc radiator, and the recent culmination of… More

Moving-coil transducers are usually associated with low power, low efficiency, broadband and very low frequency applications. the recent introduction of rare earth permanent magnetic materials having high energy densities and the recent development of better design techniques significantly improve… More