Tannoy Dual Concentric

The loudspeaker driver with the tweeter placed in the middle of the woofer.
Guy R. Fountain, Tannoy’s founder, had his engineer Ronald Rackham design a driver in which the tweeter sits in the middle of the woofer. The sound then comes from a single point.
The driver was built into large floor-standing speakers and used in many studios. The principle is found today in several brands, including KEF.
Materials: Paper cone, metal frame, compression driver in the centre
Manufacture: Developed by Tannoy in Britain and on the market from 1947.
The round driver with a horn in the middle.
The large paper cone around the horn.
The wooden cabinet.