Abstract: A loudspeaker having an air cooled voice coil. The speaker includes frame, a cone and a cap collectively forming a vibratingly drivable diaphragm, a magnet, a pole piece, a voice coil disposed to drive the diaphragm, and preferably a spider disposed to secure the diaphragm to the frame at one end of the diaphragm. The magnet is part of a magnet assembly having air passages disposed to enable air to flow over the voice coil, and to be efficiently conducted away therefrom. The voice coil has apertures enabling cooling air to flow from the air passages in close, heat exchange relation to the voice coil. In alternative embodiments, the air passages extend horizontally and vertically through the magnet assembly, and may interconnect. Preferably, the diaphragm acts to pressurize air to establish flow for cooling purposes. In alternative embodiments, independent sources of pressurized air are contemplated.