Sound pick-up for reading information items out of the groove of a rotating information carrier disc

摘要

The invention relates to a sound pick-up for reading information items out of the groove of a rotating information carrier disc by means of a needle scanning the groove. The sound head of the sound pick-up is mounted on the pick-up arm with the aid of a carrying clip. The sound head exhibits an electrodynamic magnet system which includes a needle unit (43). The needle carrier (51) of the needle unit is held, capable of vibration, in a sleeve (71) of the needle holder by means of an elastic support block (73). The axis of the sleeve (71) is adjusted by an angle alpha with respect to the centre line (79) of the sound pick-up in such a manner that the scanning needle (53) achieves the prescribed track angle beta when the scanning needle (53) rests on an information carrier disc (81). IMAGE