据国外资料报导,Intersonics公司研制了一种新型的低音扬声器。在这种扬声器中,没有普通扬声器中的音圈,而装了低惯性马达、驱动轴、转动—平动转换器,以及一张或二张大口径扬声器纸盆。驱动轴和马达联接,同时,通过转动—平动转换器和纸盆联接。经过放大了的音频信号激励马达,驱动轴和转动—平动转换器把马达的转动转换成平动,推动 According to foreign reports, Intersonics has developed a new type of woofer. In this type of loudspeaker, there is no voice coil in a normal loudspeaker, but a low inertia motor, drive shaft, rotary-to-parallel converter, and one or two large-diameter speaker cone. The drive shaft is connected to the motor and, at the same time, is connected to the cone by a rotary-to-translatory converter. The amplified audio signal excites the motor, the drive shaft, and the rotary-to-parallel converter to translate the rotation of the motor into translational motion