The invention relates to an electric-sound activator and relative production, used in sound amplifier, wherein the activator receives two common-phase/reverse alternative voice voltages from sound amplifier to generate sound; and the invention comprises a film vibrator, two conductive back plates and two insulators. Its production comprises that: forming film vibrator, charging two side faces of vibrator, setting two insulators at two sides of vibrator and setting the back plates at two sides of insulators. The invention can save energy and reduce cost.