A concentric tube suspension system and loudspeaker system of the moving coil type, including a diaphragm supported by a frame, a voice coil including a former and voice coil winding supported by the former, and a suspension system for stabilizing and centering the voice coil in a magnetic gap while it is linearly displaced by an electromagnetic motor. The suspension system generally comprises a tubular stabilizer attached to the bottom surface of the diaphragm so as to concentrically straddle the voice coil and electromagnetic motor, and a lower corrugated suspension attached at one end to the frame and at the other end to the lower end of the stabilizer, wherein the stabilizer and lower suspension provide a centering force below the traditional neck joint location on the voice coil.