High-precision alignment features for audio transducers

A playback device comprising:

• an audio transducer comprising:
• a voice coil including a first lead and a second lead;
• a carrier comprising an annular body disposed around the voice coil, the annular body having an upper mounting surface defining a first recess receiving the first voice coil lead therethrough and a second recess receiving the second voice coil lead therethrough;
• a diaphragm assembly comprising a diaphragm coupled to the voice coil and a radially outer attachment flange surrounding the diaphragm, the outer attachment flange having a rear surface in contact with and adhered to the upper mounting surface of the carrier;
• and
• a waveguide assembly coupled to the audio transducer such that a rear surface of the waveguide is coupled to a forward surface of the attachment flange of the diaphragm assembly, the waveguide assembly comprising a first waveguide body fluidically coupled to the audio transducer and configured to direct sound along a first axis and a second waveguide body fluidically coupled to the audio transducer and configured to direct sound along a second axis that diverges with respect to the first axis along a direction away from the audio transducer.

A method of assembling a playback device, the method comprising:

• disposing a carrier comprising an annular body having an upper mounting surface around a voice coil such that a first voice coil lead extends through a first channel in the annular body and a second voice coil lead extends through a second channel in the annular body;
• affixing the first voice coil lead with respect to the first channel and the second voice coil lead with respect to the second channel;
• disposing an attachment flange of a diaphragm assembly such that a rear surface of the attachment flange is in contact with the upper mounting surface of the carrier with an adhesive therebetween;
• and
• affixing a waveguide to a forward surface of the attachment flange of the diaphragm assembly, the waveguide defining first and second chambers separated by a divider, wherein each of the first and second chambers are in fluid communication with the diaphragm assembly.