KEF have always made their own loudspeaker drivers. The fifty year history of the Kent Engineering Foundary includes vacuum formed polystyrene and mylar polyester film tweeters in the early 60s, leading in 1967 to the legendary B200, B110 bextrene units and T27 tweeter used by the BBC and a number of other loudspeaker companies worldwide. Advanced engineering in these drivers enabled much higher voice coil temperatures than most other similar sized drivers of the time and because KEF's "Driver Data Sheets" provided a full range of specifications, it was much easier for other companies to incorporate KEF drivers into their own speaker designs. This achievement was acknowledged with two prestigious Queen's awards for export.

KEF was one of the first companies using computers for exact pair driver matching and more rapid prototyping of cross over design. KEF's own loudspeakers evolved with the domestic model 104 speakers achieving the standard of broadcast monitor loudspeakers and the model 105 was one of the first speakers to include time aligned drivers. Raymond Cooke (1925-1995) was made OBE in 1979 and later became president of the Audio Engineering society (1984). The availability in 1988 of the NASA developed neodymium/iron/boron magnetic material - 10x more powerful than existing speaker magnets - enabled KEF to place a tweeter within the bass driver voice coil and the Uni-Q was born. Because the Uni-Q design extends even response over a wide area and eliminates "sweet spots" this highly desirable approach is now in it's 8th incarnation in the latest "Q" series speakers.

KEF developed systems for the home theater during the later 90s including subwoofer and satelite systems using the innovative ACE Activated Carbon bass Extension and advanced cabinet design with finite element analysis of driver cones. The latest "T" series continues the amazingly pipeline of product innovations - all executed with high quality engineering.

KEF's CD Quality wireless system is convenient for subwoofers and rear channel speakers. High Fidelity Adaptive Differential Pulse Code Modulation (HFADPCM) keeps signal free from interference and Advanced Adpative Frequency Hopping Spread Spectrum (AAFHSS) continually switches to strongest available channel. Together both systems ensure continuous transmission with no mutes, drop outs of loss of bonding over a 25m range.