Visaton EX 80 S, Electro dynamical exciter, For stimulating bending waves on plates, The unit can be attached to the surface of the plate by gluing or screwing, Application possibilities: Signal output in applications where normal speakers can not be installed for optical reasons or for protection against environmental conditions or vandalism, Maximum power: 50 W, Nominal impedance Z: 8 Ohms, Voice coil diameter: 35.6 mm, Total weight: 0.16 kg, Connections: 4.8 x 0.8 mm (+), 2.8 x 0.8 mm (-) temperature range: -25 - 70 °C