KEF took a middle road with its LS50 Wireless, of which the esteemed British maker has now released a next-gen edition, the LS50 Wireless II. The new speaker looks almost identical to its predecessor but incorporates numerous innovations to incrementally upgrade sonics. Most notable is a new trick to dispose of the troublesome midrange/ tweeter “back wave” that, to one degree or another, plagues every dynamic-driver design by interacting with the forward radiating output and with the cone itself to induce small but meaningful distortions in both amplitude and time domains. Creative schemes to nullify this have, over the years, including highly damped sub-enclosures, tapered, transmission-line-like rear spaces, and strategically deployed wads of fuzz (pardon the technical terminology).
KEF’s solution in the LS50 Wireless II is a disc comprised of a newly developed Metamaterial Absorption Technology (MAT) located behind the radiating surface of its concentric Uni-Q woofer/tweeter unit. This is molded with a labyrinth-like raceway pattern—likely the fruit of many hours of high-MIPS computer-simulation time—that acts as a Helmholtz resonator (absorber) to trap unwanted sound, from a few hundred Hertz on up, before it can reflect back upon diaphragm surfaces.
Fundamentally, the LS50 Wireless II is an active, wireless evolution of a passive design KEF originally introduced to mark its 50th anniversary. (A passive edition of this upgraded design, the LS50 Meta, is also currently available.) The LS50 Wireless II retains KEF’s hallmark Uni-Q concentric woofer/ tweeter configuration, now up to a 12th generation, which positions the tweeter in the space where the dust cap of a conventional woofer would be. This layout is said to promote the smooth, controlled directivity and even off-axis response that mitigates the impact of room interactions.
SETUP
هذه القصة مأخوذة من طبعة June - July 2021 من Sound & Vision.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
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هذه القصة مأخوذة من طبعة June - July 2021 من Sound & Vision.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
The Big Clean
Chances are you probably do not think about the state of your electronic devices too often. Oh, you might think about all the upgrades you would like to make; where you would put those new tower speakers, or how a second or third subwoofer would really tame those bass modes in your room, or how much more cinematic a larger screen would be. Sure, you think about that part of your system. But how often do you think about the well-being of your system?
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