A small experimental transducer array was designed, constructed, and tested to demonstrate the feasibility of enclosing the elements in a liquid‐filled housing that requires no pressure‐release materials. The transducer consists of four dumbbell‐type lead zirconate titanate transducer elements that are set in close‐fitting cavities in a high ρcmetal block. The entire housing is filled with a silicone fluid and provision is made to maintain the inside pressure equal to the pressure on the outside at all times. Presentation of frequency‐response curves, electrical input impedances, and efficiencies demonstrates that the transducer characteristics are relatively insensitive to ambient pressures up to 1000 psi, the maximum pressure available for test. The transducer is further characterized by high power capability, good efficiency, a lowQ, and a high effective electromechanical‐coupling coefficient. [Research sponsored by the USN Bureau of Naval Weapons.]