Patent ID: 7809148

Claim:
A loudspeaker, comprising: a frame; a toroidal magnet is affixed to the rear of the frame, the toroidal magnet having a central passageway that opens into the frame; a cap is affixed to the rear of the magnet and closing the central passageway; a guide rod is affixed to the cap and projecting 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 having a narrow, rear end and a wide, front end, the rear end is affixed to the tubular former, the front end is affixed to the front of the frame; a rearward cone having a narrow, rearward end and a wide, forward end, the rearward end having a central opening that loosely receives the tubular former between the rear of the frame and the rear end of the forward cone, the forward end 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; and, a forward spider is affixed to the rear end of the forward cone and is affixed to the forward end of the rearward cone.