![]() His rationale was that the H95 is “the sort of amp many will use to drive such speakers.” From that experience he learned that “the little LS50 Metas did a really good job of projecting sound” into the room, which measures 19′L × 15′W × 8′H, and that “the H95 didn’t have to struggle to drive them to loud listening levels.” He also thought that “they sounded clearer and more detailed in the midrange” than he remembered the LS50s sounding.ĭoug did his serious listening for the review in his main listening room, which measures about 36′L × 16′W × 8′H, but with only one-half of the room used for the system. Initially, Doug used the LS50 Metas for casual listening on his living-room system, primarily because of his Hegel Music Systems H95 integrated amplifier-DAC, which is rated to output 60Wpc into 8 ohms and retails for $2000. Although the tweeter is crossed over at 2.1kHz, according to Oclee-Brown, the MAT disc “can absorb almost 100% of sound from 600Hz up to above 40kHz.” Inside the motor is an opening that allows the rearward energy, or backwave, produced by the tweeter diaphragm to reach the MAT disc, which has 30 tubes optimized in size and shape to completely absorb the air traveling into it. The MAT is a small disc, about 3″ in diameter and not quite 0.5″ thick, attached to the back of the Uni-Q’s motor structure. The video describes MAT in great detail, so Doug just summarizes the technology in his review: are made from assemblies of multiple elements fashioned from composite materials such as metals and plastics.’” When Doug visited KEF in March, he was with the SoundStage! video team, who produced a YouTube video about KEF’s Metamaterial Absorption Technology (MAT). One improvement is what KEF calls a tweeter gap damper, that Doug said “solves a problem KEF had in previous versions of the Uni-Q: the tweeter’s placement in the belly of the midrange-woofer caused changes in air pressure and thus turbulence between the two drivers that interfered with the motion of the tweeter’s dome.”īut the biggest change involves the tweeter, which, as Doug explained, uses “what the new model is named for: metamaterial, which Wikipedia defines as ‘any material engineered to have a property that is not found in naturally occurring materials. However, there have been changes made to portions that you can’t see, mostly to address distortion. The 1″ dome tweeter and the 5.25″ midrange-woofer, which are assembled in a coaxial configuration that KEF calls Uni-Q, also look similar to the original model’s components. Jack Oclee-Brown, the head of KEF’s R&D department, told him that when the design team examined the cabinet, they found nothing about it that they could significantly improve, so they pretty much left it alone. Doug explained in the review that when visiting KEF’s Maidstone, Kent, headquarters in March 2020, Dr. The LS50 Meta is priced the same as the original LS50 was in 2012 ($1499.99 per pair, all prices USD), and, according to Doug’s review, deserves similar praise.Įxcept for the new matte finishes - Royal Blue Special Edition, Mineral White, Titanium Grey, and Carbon Black - and its rear-mounted port opening now being “racetrack” shaped instead of a true oval, the LS50 Meta’s cabinet, which measures 12″H × 7.9″W × 12.2″D, is essentially the same as the LS50’s. Doug reviewed it last month, and it too received a Reviewers’ Choice award. In October 2020, KEF released the LS50’s successor, the LS50 Meta. The LS50 received a Reviewers’ Choice award at the time of the review, was further recognized as a Recommended Reference Component in August 2013, and was one of 2013’s Products of the Year. This would give you 2 bolted connections, the side brackets for support and the adhesive feet under the speaker near the back.In 2012, UK loudspeaker manufacturer KEF released the LS50 loudspeaker, which Doug Schneider reviewed for this site in April 2013. ![]() I think the baseplate on the monoprice bracket is not big enough (front to back) to support all four feet but you could drill holes near the front of the adjustable L shaped side brackets for the front 2 feet then use a couple of adhesive feet stuck to the bracket as far back as possible to support the rear speaker ![]() My Ls 50 meta's have four rubber feet and if you look in the hole in the center you will see it it threaded for an M8 bolt (see attached picture) I would not use the side holes in the adjustable width side brackets. ![]() The Ls 50 does better much further out in the room but sometimes speaker location choices are limited by other factors, The specs say Bookshelf Speakers with 5.4" ~ 11.0" Width and 55 lbs max. ![]() I have not used them with the Ls50 so YMMV. I have had good luck with the "Monoprice Universal Bookshelf Speaker Mount System" ![]()
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