a capacitive transducer , in particular a condenser microphone , with a ring - shaped member and a diaphragm secured to the ring - shaped member . a disc - shaped member is secured in the opening of the ring - shaped member and in parallel relationship to the diaphragm . the disc - shaped member has an electrically conductive portion spaced from the ring - shaped member and facing the diaphragm in a predetermined distance therefrom , whereby the diaphragm and the electrically conductive portion on the disc - shaped member form an electrical capacitor . the second side of the disc - shaped member and the contact member are directly accessible . - also , the ring - shaped member has , outside the outer periphery of the diaphragm , a free surface extending transversally to the axis of the ring - shaped member for mounting in a microphone housing with the diaphragm flush with the front end of the microphone or slightly recessed relative to the front end .