Solions are electrical components involving charge transport by solution ions as contrasted to electrons, holes, or gas ions. Four general types of solion acoustic transducers may be distinguished on the basis of mechanism underlying the transducer action. One of these, the polarized cathode type, offers a combination of advantages, which includes low threshold pressure, high power gain, stable zero, and direct‐current transmission. Individually constructed models with a nominally linear pressure response have been used successfully in the study of infrasonic disturbances transmitted through the earth and atmosphere as well as under water. Yet, design and construction methods have not previously been perfected to a degree that would ensure wide usage. The relatively sluggish motion of the charge carriers in the electrolyte of the transducer is at the same time a necessary condition for transducer action and a factor limiting the dynamic response. A theoretical analysis is presented to explain the observed behavior of the existing devices of this type and to indicate what may be expected from transducers having the benefit of more‐refined fabrication techniques.