Vented audio transducer

An electronic device, comprising:

• a speaker, comprising:
• a diaphragm having a dome portion and a neck portion that extends around a periphery of the dome portion;
• a coil that includes a proximal end that is at least partially attached to the neck portion of the diaphragm and a distal end that extends away from the diaphragm,
• wherein the coil separates a first volume of the speaker that is at least partially defined by a first side of the coil and the dome portion from a second volume of the speaker that is at least partially defined by an opposing second side of the coil and wherein the first volume of the speaker and the second volume of the speaker are further fluidly coupled at a location that is distal to the distal end of the coil;
• and
• a plurality of vents that fluidly couple the first volume to the second volume,
• wherein the plurality of vents include a number of vents, each having a cross-sectional area, and wherein the number of vents and the cross-sectional area of each vent form a sufficient airflow path between the first volume and the second volume to substantially prevent additional airflow between the first volume and the second volume via the location that is distal to the distal end of the coil during operation of the speaker.

An audio transducer diaphragm, comprising:

• a dome;
• a neck;
• and
• a plurality of radially extending protuberances angularly spaced apart around the audio transducer diaphragm, wherein each radially extending protuberance of the audio transducer diaphragm includes a corresponding protuberance of the neck and a protuberance of the dome that extends radially away from a center of the dome to the protuberance of the neck.