Tannoy is famous worldwide for its innovative, unique and very accurate sounding Dual Concentric. A Dual Concentric speaker unit is very different from the standard speaker industry drive unit. It has the tweeter or treble unit mounted at the centre of the bass unit so that the two units operate in total harmony with each other.

The construction and operation of the Tannoy Dual Concentric is unique and provides benefits that other manufacturers cannot. The waveguide high frequency unit has a smooth acoustic path through the centre of the low frequency unit without problems due to masking or diffraction. The low frequency unit operates without obstruction, as the core piston apex is well clear of the high frequency unit. Both units operate in harmony together providing a single point source covering the whole acoustic audio spectrum and in a way that recreates the original sound field better than any other system.