KEF is a leading loudspeaker manufacturer collecting top-rated global reviews. KEF's philosophy for high fidelity sound reproduction is based on generating dynamic, low distortion, wide frequency sound that is faithful to the source without drama, exaggeration or artifice. With advanced research facilities, and the benefit of loudspeaker design graduates from two UK universities, KEF loudspeakers embody excellent engineering and engaging fatigue-free sound quality.
Packed with dual amplifiers, high resolution DAC, and crossover timing digital signal processing and configurable bass response, the KEF LS50 Wireless is far more than another powered speaker. Partnering legendary LS50 sound quality with this level of sophisticated electronics makes them unbeatable value, there is simply nothing else close currently available.
KEF's latest line of reference speakers are hand-built in the UK to exacting standards. The brand new drivers are matched within a +/- 0.5 dB tolerance and seamlessly integrated into a very rigid front baffle, a specially engineered new material made from five layers of aluminum sandwiched in a dense composite resin. "The Reference" achieves bench mark performance by paying exhaustive attention to detail across all aspects of the design; crossover components are not just selected for frequency response, but for lowest distortion. These are incredibly well-made loudspeakers and both the large floor-standing Reference 5, the stand-mounted Reference 1 and full size Blade models can be auditioned at kemela.
KEF's Q series has been recently updated with new drivers, cabinet configuration and crossover elements. These speakers are the perfect balance of cosmetics, sound quality and price.
The R series loudspeakers have better drivers and crossovers and the cabinets are more rigid with luxurious black and white high gloss and real wood finishes.
A key differentiating approach used by KEF for many years is locating the tweeter coaxially within a mid/bass driver rather than next to it. The first Uni-Q concentric driver was built in the late 1980s following NASA's development of neodymium based magnetic materials 10x more powerful than the existing speaker magnets. When listening to KEF speakers with Uni-Q - now in its 11th generation - even the novice listener can appreciate the wide, evenly distributed, sound stage and the lack of an obvious "sweet spot". Uni-Q is also an important step to point source sound generation.
While there are other companies that build their own drivers, KEF has a noteworthy history of introducing new cone materials (vacuum formed polystyrene, Mylar polyester, Bextrene) and developing better engineering that allowed much higher voice coil temperatures than in other similar-sized drivers. Full spec "Driver Data Sheets" made it easier for companies to incorporate KEF drivers into their own speaker designs and the huge demand created was acknowledged with two prestigious Queen's awards for export.
KEF's own speaker building efforts was accelerated with a BBC commission to build monitor loudspeakers. To meet the demanding standards, computers were used for rapid prototyping of crossover design and to exactly match pairs of drivers essential for stable image location in stereo reproduction. The development of these methods enabled the famous Model 104, to be a "domestic" loudspeaker that met broadcasting standards. The subsequent 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.
The enthusiasm for innovation and advanced technologies continues today. Finite element analysis of the Blade-derived Uni-Q enabled cone breakup to be significantly reduced such that distortion is now less than 0.4% (80Hz-20KHz) in the current R-series models. Computational fluid dynamics led to the development of the unique flexible port in the LS50.
With over fifty years of experience and some extremely modern engineering and manufacturing, KEF offers outstanding performance and tremendous customer satisfaction with loudspeakers priced between approximately $500 and $32,000.