Inverted motor transducer with central vent

An electrodynamic transducer, comprising:

• a rear frame defining an open frame interior and having an annular base;
• a central vent extending through the transducer along a central axis of the transducer, a first segment of the central vent extending upwardly from the base;
• a movable diaphragm positioned within the open frame interior and operably connected to the rear frame;
• a magnet assembly concentrically disposed with respect to a second segment of the central vent and coupled to a third segment of the central vent forward of the diaphragm, wherein a magnetic air gap is defined between the magnet assembly and the central vent;
• and
• a voice coil disposed within the magnetic air gap and operably connected to the diaphragm;
• wherein the central vent allows bi-directional air flow in and out of the transducer.

A loudspeaker system, comprising:

• an enclosure;
• a transducer mounted within the enclosure, the transducer including:
• a rear frame defining an open frame interior and having an annular base;
• a central vent extending through the transducer along a central axis of the transducer, a first segment of the central vent extending upwardly from the base;
• a movable diaphragm positioned within the open frame interior and operably connected to the rear frame;
• a magnet assembly concentrically disposed with respect to a second segment of the central vent and coupled to a third segment of the central vent forward of the diaphragm and outside of the enclosure, wherein a magnetic air gap is defined between the magnet assembly and the central vent;
• and
• a voice coil disposed within the magnetic air gap and operably connected to the diaphragm;
• wherein resonance within the enclosure pumps air through the central vent such that the central vent functions as a Helmholtz port.