Abstract: A mini subwoofer double drive low-frequency vibrator includes a base, an upper cover, a side cover, a flexible printed circuit, a coil, a magnetic body, a counterweight, a spring piece, an internal welding piece, an external welding piece, an insulating tape, and a buffer. The magnetic body and the coil includes a symmetrical double-driving structure at both upper and lower part to mutually offset components in a non-vibration direction of an electromagnetic force and cancel vibration noises. The spring piece adopts a V-shape structure to increase an effective length of a deformation zone and to make a response frequency even lower. Two V-shape springs are distributed symmetrically in a center, making an operation more stable. The buffer is adopted to enhance service life, for fear of a spring damage caused by high circuit voltage.

Abstract: A mini subwoofer double drive low-frequency vibrator includes a base, an upper cover, a side cover, a flexible printed circuit, a coil, a magnetic body, a counterweight, a spring piece, an internal welding piece, an external welding piece, an insulating tape, and a buffer. The magnetic body and the coil includes a symmetrical double-driving structure at both upper and lower part to mutually offset components in a non-vibration direction of an electromagnetic force and cancel vibration noises. The spring piece adopts a V-shape structure to increase an effective length of a deformation zone and to make a response frequency even lower. Two V-shape springs are distributed symmetrically in a center, making an operation more stable. The buffer is adopted to enhance service life, for fear of a spring damage caused by high circuit voltage.