The Orbophone is a new interface that radiates rather thanprojects sound and image. It provides a cohesive platformfor audio and visual presentation in situations where bothmedia are transmitted from the same location andlocalization in both media is perceptually correlated. Thispaper discusses the advantages of radiation overconventional sound and image projection for certain kindsof interactive public multimedia exhibits and describes theartistic motivation for its development against a historicalbackdrop of sound systems used in public spaces. Oneexhibit using the Orbophone is described in detail togetherwith description and critique of the prototype, discussingaspects of its design and construction. The paper concludeswith an outline of the Orbophone version 2.