Abstract: An audio system that is constructed and arranged to be carried by a headwear that is adapted to be worn on a person's head. The audio system includes one or two sound delivery assemblies, each sound delivery assembly comprising a housing, and a loudspeaker that generates sound in the housing, where the housing has a sound-emitting opening that emits sound generated by the loudspeaker. There is a wiring harness that is constructed and arranged to transmit audio signals from an audio device to the loudspeakers. There are one or two coupling devices. Each coupling device is constructed and arranged to releasably couple a sound delivery assembly to the headwear such that the sound emitting opening of the sound delivery assembly is located proximate an ear when the headwear is on the person's head.