The invention discloses a
sound production device and an earphone, and the
sound production device comprises a shell, a high-
pitch unit and a low-
pitch unit; the high-
pitch unit is fixed to the shell and located in the shell, the high-pitch unit comprises a magnetic conduction shell, a magnetic conduction vibrating diaphragm and a high-pitch
magnetic circuit system, the magnetic conduction vibrating diaphragm and the high-pitch
magnetic circuit system are arranged in the magnetic conduction shell, and the magnetic conduction vibrating diaphragm is suspended in the high-pitch
magnetic circuit system. The
high pitch magnetic circuit system is used for generating an alternating
electromagnetic field to drive the magnetic conductive diaphragm to vibrate. The bass unit is fixed with the shell and located in the shell, the bass unit comprises a bass magnetic circuit
assembly, a bass vibrating diaphragm and a bass
voice coil connected with the bass vibrating diaphragm, a bass magnetic gap for the
insertion of the bass
voice coil is formed between the bass magnetic circuit
assembly and the magnetic conductive shell, and the bass unit and the treble unit are coaxially arranged. According to the
sound production device, the high-frequency performance and the low-frequency performance are both considered, the sound-
electricity conversion efficiency of the high-pitch unit is high, the occupied space of the sound production device in the earphone is reduced, and the magnetic circuit efficiency is improved.