FIG. 6 illustrates sound pressure level curves separately obtained by using a horizontal connection method and a vertical connection method for a bend ring and a bracket in the case where the size of a speaker is 66 mm, wherein a result obtained by the horizontal connection method is indicated by a dotted line, and a result obtained by the vertical connection method is indicated by a solid line. In a horizontal connection method of the bend ring and the bracket, it needs to reserve a certain size on the outer brim of the bend ring for a stable connection with the bracket. However, the size occupied by the connection causes the effective radius of vibration of the bend ring to decrease so as to reduce an effective vibration area, thereby reducing the sensitivity of the speaker unit. It can be seen from the above comparison result that in the case of the same maximum outer diameter, a sound pressure level obtained in the embodiment of the present disclosure is 2-3 dB higher than that obtained in a horizontal connection method. Although the embodiments of the present disclosure are exemplified by an active speaker, the connection for the bend ring and the bracket may also be applied to a device such as a passive radiator. Optionally, a passive radiator and an active speaker may be used together and mounted on a box body of a sound box. The bracket of a passive radiator may be the bracket used in the active speaker in the above embodiments and may also be the box body of the sound box. In addition, the connection method in the present disclosure may be used in a variety of applications where suspension is required.