The point source configuration of the Tannoy ICT TM driver's mid-base and tweeter speaker sections ensures a wide and controlled dispersion for optimal coverage; this while avoiding the massive loss of energy in the vertical plane, at the crossover frequency, which is natural in two-way discreet designs. The ICT (Inductive Coupling Technology) also addresses the two most common component errors experienced in background music and sound amplification systems, tweeter speaker and transitional reliability. The use of a wireless electromagnetic treble means that no crossover is required in the design. This therefore ensures that an ICT TM unit is exceptionally reliable and therefore ideal for applications where constant heavy use is the norm. This high-frequency aluminum dome features a deep drawn skirt that sits on the inside of the low frequency voice coil in the same magnetic gap. The skirt is like a single shortened lap induced with high frequency information generated by the low frequency voice coil, which is fed a full bandwidth signal. The mineral charged polypropylene cone material and nitrile rubber surround further durability and long-term reliability.