The Dual Concentric™, a time coherent, point source and constant directivity dispersion driver design, is an ideal solution for the in-wall speaker application. The high frequency unit, centrally mounted in the throat of the main mid/bass driver, delivers an open and natural sound with a very wide imaging ‘sweet spot’. The addition of a Tannoy SuperTweeter™ extends the frequency bandwidth to over 50kHz for greater precision, tighter imaging and increased presence throughout the entire audible frequency band.