The KEF LS50 Wireless is a brilliant evolution of the highly regarded LS50 loudspeaker that takes performance to a whole new level. This thoughtfully designed sophisticated product applies the very latest technology and is far more than a loudspeaker with a built-in amplifier. In aspiring to deliver the best listening experience, KEF has always taken into account the way speakers sound in a room, rather than just anechoic chamber measurements of a single loudspeaker. The KEF LS50 Wireless is the result of KEF's experience and latest sound reproduction research combined with over 50 years of acoustical engineering innovation in cabinet, driver, and crossover. design. The sound achieve is excellent and difficult to obtain with passive speakers and a collection of separate electronic components at this price.
KEF LS50 Wireless speakers utilize completely digital 192kHz/24-bit high-resolution signal paths from the inputs to the amplifiers that power the Uni-Q driver. DSP is applied within these signal paths to compensate for loudspeaker placement and for better integration of the sound signals with frequencies that hit both the tweeter and bass/midrange sections of the Uni-Q driver driver. The advanced time-correcting DSP crossover, and the unique sound dispersion abilities of Uni-Q, ensures that time-corrected accurate sound can be achieved in different types of listening set-ups.
The layout and furniture and some rooms are difficult to work with resulting in less than ideal speaker placement. The DSP ability of the KEF LS50 Wireless compensates for different room placements by making adjustments to the frequency response of the speaker. Adjustment can be made via the control panel on the rear of the speaker for desktop placement versus stand mounted, and wall versus free-space boundary conditions. Further finer equalization is available via a dedicated iOS or Android app. Regardless of placement and room acoustics, Uni-Q technology disperses sound evenly for total listening enjoyment in more than a small sweet spot.
An impressive collection of electronic hardware is built into KEF LS50 Wireless loudspeakers. Each speaker contains a 30 watt class A/B amplifier for high frequencies and a 200 watt class D amplifier for low frequencies. Two 192kHz/24-bit high-resolution DACs are used for each R/L channel and there is a streaming preamplifier, Wi-Fi, and Bluetooth. Information from high resolution digital sources stays digital from the input right up to the amplifiers.
Five input modes selectable from the touch on the top of the right speaker; 2.4GHz/5GHz Dual-band Wi-Fi, Bluetooth 4.0 with the aptX codec, Asynchronous USB Type B (PC), TOSLINK Optical, and RCA Analog. Bluetooth mode stores up to 8 devices so you can connect up to 12 devices in all! The remote control and app also lets you conveniently switch between the various inputs and the app gives you access to more detailed adjustments to optimise sound for different rooms.
Using the app, further DSP processing is available to adjust the sound to take into account size and damping characteristics of the room as a whole.
Selecting "expert" mode enables treble trim, phase correction, high-pass mode, sub-out low-pass frequency, polarity and gain.
These functions go much further towards "dialing in" the speakers to the room than traditional bass and treble receiver controls or frequency response adjustments of passive cross-overs.
Unique to the KEF LS50 Wireless is the combination of
KEF's Uni-Q driver, which already goes a long way to give you a 3D sound
image wherever you sit, with the time correcting DSP crossover. The even
off-axis dispersion of the Uni-Q driver, curved front baffle, and now time-corrected
crossover., gives an engaging integrated three-dimensional and focused sound
image for extremely accurate sound reproduction.
Key to the sound stage created by the LS50s, which is out of all proportion
to its size, is the advanced Uni-Q driver with a Z-flex surround. With engineering
insight and technology gained from the Blade loudspeaker this concentric
bass/midrange driver with coaxial integrated tweeter offers point source
sound rendering over a large listening area that is very fast and clean
sounding. A vast three-dimensional sound stage is created within which individual
performers are separated out in space with individual focus and correct
size - another immediately noticeable quality of the KEF LS50 Wireless
KEF LS50 Wireless loudspeakers are sold in pairs.