![]() As intended, this 13 cm unit simulates a point sound source and reproduces most of the acoustic spectrum. It is made of a characteristically curved wall made of plastic, in the center of which a Uni-Q (12th generation) loudspeaker is mounted. Harmonic distortion (90dB, 1m): KEF LS50 Meta Manual KEF LS50 Meta Review – Constructionįrom the outside, not much has changed: the bass-reflex port located in the upper right corner, the middle part of which is made of foam, now has a more oval shape, and holes have been removed from the corners of the rear panel protruding beyond the enclosure.Frequency response (☓dB): 79 Hz – 28 kHz.Typical in-room bass response (-6dB): 26 Hz.Drive units: Uni-Q Driver Array: HF: 25 mm (1 in.) vented aluminum dome with Metamaterial Absorption Technology, MF/LF: 130 mm (5.25 in.) aluminum cone.Where did this intriguing name come from and what does the new sound like? KEF LS50 Meta Specifications This project has, for example, a wireless version (Wireless) and the Meta, which has just been launched. Eight years have passed since then, but the “Fifties” are still the apple of the eye of the engineering team led by Jack Oclee-Brown. KEF celebrated its 50th anniversary with the construction of the LS50 monitors, which, along with designs such as Muon and Blade, became the showcase of this British brand. 2.1 You can download the manual here->KEF LS50 Meta Manual.That brings us to the LS50 Wireless II’s all-new streaming platform that carries with it Bluetooth (AAC but no aptX or LDAC), Apple AirPlay 2, proper Roon Readiness* (hello RAAT & multi-room sync), Spotify Connect and Google Chromecast Built-in to complete this commentator’s Holy Trinity of Streaming. Will MQA’s 44.1kHz/48kHz travel formats be unpacked entirely by the primary loudspeaker before being channel separated? Or will left and right channels be separated and then unpacked by their respective loudspeakers? Or will the primary speaker copy the stereo stream to the secondary speaker and then each speaker drops the channel that it doesn’t need? ![]() However, at the time of writing, it is unclear if those streams will be limited by the wired or wireless interlinks. The LS50 Wireless II will also support MQA in full: decoder and renderer. Everything streamed above the chosen interlink’s capabilities will be downsampled accordingly Not mentioned in the press release: the interlink’s maximum sample rate capabilities impose a glass ceiling on listeners looking to max out the LS50 Wireless II’s hi-res streaming support: PCM up to 384kHz and DSD256. And anyone pulling the LS50 Wireless II out of standby with a network stream can expect a five-second delay before the secondary speaker is woken by the primary when wirelessly interlinked. Whilst we’re talking language, those hanging their hat ‘Wireless’ are advised that the LS50 WII’s Ethernet-based 24bit/192kHz interlink is now optional - a 24bit/96kHz wireless interlink is also possible. KEF has given the outmoded ‘master/slave’ terminology the boot. (I’ve always found the LS50 to be too much loudspeaker for a desk). KEF is likely betting that more people will put the LS50 Wireless II either side of a TV set than they will a desktop monitor. ![]() On hard-wired connectivity, we note two changes, one significant, the other less so: coaxial and TOSLINK remain but 1) the twin RCAs have been substituted by a 3.5mm analogue input and 2) the USB has been swapped out for HDMI ARC. One upshot is 7Hz greater bass depth the LS50 is rated by KEF down to 47Hz but the LS50 Wireless II down to 40Hz. The LS50 Wireless II then activates the LS50 Meta’s 12th Generation + MAT Uni-Q driver array with a DSP crossover dividing the signal between the mid-bass driver’s new 280 Watt Class D amplifier and the tweeter’s new 100 Watt Class A/B amplifier. The LS50 Meta will be available in four matte finishes – Carbon Black, Titanium Grey, Mineral White plus a Royal Blue Special Edition – and will sell for £1000/€1199/US$1499 per pair. For its Meta iteration, KEF has elevated the LS50’s Uni-Q driver to a 12th Generation design that sports a ‘new cone neck decoupler’ and motor system plus the ‘tweeter gap dampener’ first introduced in the 2018 R Series.Īlso inside the cabinet, the LS50 Meta receives an ‘off-set flexible bass port’ designed to reduce midrange colouration and more rigid cross bracing with constrained layer damping.
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