In this paper, the performance and vibration characteristics of an electromagnetic boomer as a source of high-power acoustic waves have been studied. The system under study consists of a 45-turn tape coil with two circular diaphragms with a diameter of 508 mm and a thickness of 12.7 mm, which are restrained from the sides by 6 springs. For this purpose, the boomer operation was formulated using the relations governing diaphragm vibrations, eddy currents, and their mutual effects. Since it is difficult to solve these equations analytically, the finite element method was used to solve these equations simultaneously. The results show that with increasing diaphragm thickness from 5 to 18 mm, the diaphragm displacement amplitude initially increases rapidly, but gradually approaches a constant value at 18 mm with increasing thickness. At the same time, the diaphragm displacement frequency decreases from 22 to 14 Hz with increasing thickness. On the other hand, studies show that if the spring constant increases by a similar ratio and simultaneously with increasing diaphragm thickness, the diaphragm displacement will have a maximum value with a thickness of 9 mm. Examination of the diaphragm material also shows that the displacement range of the aluminum diaphragm is significantly greater compared to other metals due to its lower density and higher conductivity.