Embodiments of this application disclose an electroacoustic transducer, including a center magnet, two first side magnets, two second side magnets, a voice coil, a voice diaphragm, and two flexible printed circuit boards. The two first side magnets are symmetrically arranged on two sides of the center magnet, and a first gap is formed between the first side magnet and the center magnet. One end of the voice coil is partially located in the first gap, and the voice diaphragm is fixedly connected to the other end of the voice coil. The two flexible printed circuit boards are symmetrically arranged on two sides of the center magnet. The electroacoustic transducer has comparatively high magnetic induction strength and comparatively high sensitivity.

A micro-speaker includes a frame body, a diaphragm arranged on the frame body, a magnetic structure and a voice coil arranged in the frame body. An upper end of the voice coil is fixed to the diaphragm. The magnetic structure is arranged under the voice coil. A voice coil balancing system is provided in the frame body, which is composed of two symmetrically arranged dampers and two symmetrically arranged elastic members, which are paired and respectively arranged at mounting portions under two opposite ends of a long axis of the frame body and fixed with glue. Each of the two dampers is made of a flexible circuit board, including a first end, a second end and a cantilever connecting the first end and the second end. A ratio of a length L of the cantilever to a distribution distance D of the cantilever is between 2-15.

An audio transducer includes a frame, a magnet coupled to the frame, and a voice coil axially aligned with the magnet. The voice coil can be configured to receive a flow of electric signals from an amplifier, and, in response to the received flow of electric signals, correspondingly move a diaphragm toward or away from the magnet. The audio transducer can further include a collar coupled to the voice coil. The collar can have a flange extending radially outwardly from the voice coil. The audio transducer can further include a spider having a radially outer portion coupled to the frame and a radially inner portion coupled to the flange of the collar.

A micro-speaker includes a frame body, a diaphragm on the frame body, a magnetic structure and a voice coil in the frame body. An upper end of the voice coil is fixed to the diaphragm. The magnetic structure is arranged under the voice coil. A voice coil balancing system is provided in the frame body, which is composed of two symmetrically arranged dampers, which are respectively arranged under two ends of a long axis of the voice coil and fixed with glue. Each of the dampers is made of a flexible circuit board, including a first end, a second end and a cantilever connecting the first end and the second end. A ratio of a length L of the cantilever to a distribution distance D of the cantilever is between 2-15.

A sound-producing device is provided with at least two groups of dampers on the voice coil which are respectively arranged at a first position close to and a second position away from the vibrating diaphragm; the at least two groups of the dampers include at least a first damper and a second damper; the first damper has a first connecting part connected to the voice coil and a second connecting part fixed on the sound-producing device; a planar elastic member is provided between the first and the second connecting parts, which is bent and extends from the first to the second connecting part, and is coplanar with the first connecting part; the second damper has a first fixing part connected to the voice coil and a second fixing part fixed on the sound-producing device; there is provided a corrugated connecting arm between the first and the second fixing parts.

An acoustic transducer that includes a housing, a diaphragm, a spider, a motor, and a drop ring. The motor includes a backplate, a frontplate, a magnet, and a voice coil. The drop ring connects the diaphragm to the spider at a circumference of the spider. The drop ring extends parallel with respect to a central axis of the housing. The circumference of the spider is spaced away from the motor and connects to the diaphragm at a resonant node of the diaphragm.

A loudspeaker (1) comprising a diaphragm (2), a voice coil (10) mounted on the diaphragm (2) to move with the diaphragm (2), a chassis (4), and a spider (20) is disclosed. The spider (20) extends across a gap between the chassis (4) and the voice coil (10) and comprises a plurality of legs (36), each leg (36) extending radially across at least a portion of the gap. The diaphragm (2) is configured to move from a neutral position to an extended position. When the diaphragm (2) is in the neutral position the cross-sectional shape of each leg (36) follows a line which varies in height with respect to a reference plane, said line comprising first, second and third curves, the second curve being located in between the first and third curves. Either the first and third curves are convex and the second curve is concave, or the first and third curves are concave and the second curve is convex. Thus, the spider (20) may have legs (36) having an ‘m’ or ‘w’ shaped profile in at least one region of the leg (36).

Disclosed are a sound-producing device and an electronic terminal. The sound-producing device comprises: a voice coil, the voice coil including a bobbin and a voice coil body wound outside the bobbin; the voice coil body is configured to be able to be input an electrical signal; a conductive member, the conductive member including a first connecting part connected with the voice coil, a second connecting part fixed to the sound-producing device, and an elastic part connected between the first connecting part and the second connecting part; the elastic part is in a planar structure, and is at least located in the same plane as the first connecting part; the conductive member is configured to input an electrical signal to the voice coil.

Disclosed is a sound transducer, which can be assembled, integrated or installed primarily in the consumer, pro audio, installation and automotive sectors on land, water and air with minimal space requirements, use of materials and weight. The transducer includes a ring sound wave shaper having a very flat, thin multi-layered, flexible membrane, which generates point-shaped or ring-shaped sound within the membrane diameter.

Disclosed is a sound-producing device, including: a voice coil configured to be able to be input an electrical signal; and a damper including a first connecting part, a planar elastic part and a second connecting part. The first connecting part is configured to be connected to the voice coil; the second connecting part is configured to be fixed to the sound-producing device; the planar elastic part is formed by the first connecting part being bent and extending toward the second connecting part; the damper has a mechanical stiffness Kms of 0.2 N/mm to 2 N/mm; the sound-producing device has a resonance frequency F0 of 50 Hz to 300 Hz; the sound-producing device has a total harmonic distortion THD of less than 10% in a frequency range of 100 Hz to 300 Hz.