Speaker

A speaker, comprising:

• a frame having an accommodating space;
• a vibration system accommodated in the frame, including a diaphragm fixed to the frame and a voice coil driving the diaphragm to vibrate and make sound, the diaphragm having a dome located at a middle position and a surround spaced around the dome, the dome including a planar portion perpendicular to a vibration direction and a side surface portion extending from an edge of the planar portion, the frame including a main body having an annular structure and a protrusion portion extending from the main body along the vibration direction and away from the diaphragm;
• a magnetic circuit system driving the vibration system to vibrate, including a yoke fixed to the frame, a main magnet fixed to the yoke, and an auxiliary magnet spaced apart from the main magnet;
• a flexible printed circuit (FPC) board electrically connected to the voice coil, including a first fixing portion fixed to the protrusion portion, a second fixing portion connected to the side surface portion, and a flexible arm connecting the first fixing portion and the second fixing portion;
• wherein
• the flexible arm and the main body are spaced apart along the vibration direction, the FPC board comprises a first FPC board and a second FPC board disposed on opposite sides of the auxiliary magnet, the first FPC board further comprises a bending portion adhered to the planar portion and facing a surface of the voice coil and a perpendicular portion connecting the second fixing portion and the bending portion, the bending portion comprises a solder pad electrically connected to the voice coil.