| 摘要 |
A loudspeaker of improved construction includes a frame and a toroidal magnet that is affixed to the rear of the frame. The toroidal magnet has a central passageway that opens into the frame. A cap is affixed to the rear of the magnet and closes the central passageway. A guide rod is affixed to the cap and projects forwardly from the cap into the central passageway. A tubular former is slidably positioned upon the guide rod. A voice coil is wound about, and is affixed to, the tubular former. A forward cone has a narrow, rear end that is affixed to the tubular former and a wide, front end that is affixed to the front of the frame. A rearward cone has a narrow, rearward end with a central opening that loosely receives the tubular former between the rear of the frame and the rear end of the forward cone. The rearward cone also has a wide, forward end that is affixed to the frame rearwardly of the front end of the forward cone. A rearward spider is affixed to the rearward end of the rearward cone and is affixed to the rear of the frame. A forward spider is affixed to the rear end of the forward cone and is affixed to the forward end of the rearward cone.
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