It is advantageous when the at least one transducer element is coupled to the at least one reinforcing element and, thereafter, the diaphragm element is cast thereon. As a result, first, a fixed connection is formed between the reinforcing element and the transducer element and, thereafter, the diaphragm element is arranged at the unit made up of the transducer element and the reinforcing element.

It is advantageous when the at least one transducer element is arranged in a receiving space of a dam arrangement. The dam arrangement can be arranged on the support element first, followed by the transducer element. Alternatively, it is also possible that the transducer element is arranged on the support element first, followed by the dam arrangement. The dam arrangement has a shape of a frame on the support element comprising the receiving space. The fluid diaphragm material can be filled into the dam arrangement or the receiving space formed thereby. With the aid of the dam arrangement, the fluid diaphragm material can be retained or retained at the area, at which the at least one diaphragm element is to be formed.

If the transducer element is arranged in the receiving space, the dam arrangement completely borders the transducer element. Furthermore, the dam arrangement also completely borders the reinforcing element when it is coupled to the transducer element.