The vibrating sound that has appeared in recent years is based on the principle of vibrating medium sounding. Generally, the subwoofer effect is good, and the small and small shape is also strange. It is estimated that many music enthusiasts will exclaim, this is also the sound? ! ! But the vibrating sound also has its fatal flaws. The middle and high sounds are not enough or almost no, and they leave the medium (that is, the acoustic contact surface). Once the medium is opened from the sound, the sound is almost gone. These are the problems we must consider when purchasing the vibrating sound. Without the medium, there is a limit to the playing space.