In another embodiment, the receiver includes {HEAD ~ a magnet assembly}, an armature having a moveable portion and a fixed portion, and {TAIL ~ a coil assembly} 
In another embodiment , the receiver includes { HEAD ~ a magnet assembly } , an armature having a moveable portion and a fixed portion , and { TAIL ~ a coil assembly }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL