The KEF LS50 Meta ranks #4 out of 63 total Medium Size Bookshelf Speakers for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.

Brand: KEF

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KEF LS50 Meta - ranked #4 of 63 Medium Size Bookshelf Speakers · Editor's rating 4.5/5

Check price at Amazon ($1,599.00) →

#4 KEF LS50 Meta: $1,599.00 Amazon Crutchfield eBay

Pros: Uni-Q concentric driver mounts a 1” vented aluminum dome tweeter at the center of a 5.25” aluminum cone woofer, rated 79Hz-20kHz+. Speaker-to-speaker matching measured tight at roughly 0.5dB deviation between the pair tested, versus 2-3dB seen on some other speakers - likely why imaging stayed so precise. Imaging stays tight and focused even toed out, unlike most coincident designs where toe-out typically diffuses the image, giving more of an oval-shaped soundstage than a hard rectangular boundary. Horizontal and vertical directivity both hold to about ±50° at the -6dB point, so tonality stays consistent across roughly a 100° listening cone. The extended bass shelf is deliberately tuned for near-wall/boundary placement rather than the usual “pull it 3 feet into the room” advice, playing lower without excess boominess when placed close to a wall. At $1,000 (a frequent sale price versus $1,600 list), called a no-brainer for a compact stand-mount speaker. Independent ASR Klippel measurements corroborate this: very good directivity with the on- and off-axis curves tracking closely, and a predicted in-room response the reviewer called “very close to ideal.”

Cons: F3 of 67Hz and F10 of 42Hz mean it doesn’t get much below 50Hz in-room; a subwoofer is recommended for real bass. A 2-3dB scoop around 2-4kHz shows up in both the listening window and sound power measurements, matching a subjectively noticed lack of attack and vocal clarity that the reviewer wanted to correct with about 2dB of EQ. An on-axis diffraction dip around 8kHz smooths out with about 15° of toe-out (typical for concentric designs, but still present at 0°). Distortion is elevated at low frequencies since the single 5.25” cone shares surface area with the tweeter housing, reducing effective radiating area; multitone distortion crosses the 3% threshold at 96dB/1m, making roughly 88dB or below the safer output ceiling. Moderate sensitivity (~83dB average) needed 2-3dB more amplifier gain than typical in testing. Adding a subwoofer at an 80Hz crossover only helps lower-midrange distortion, not the elevated distortion in the 1-2kHz and above-5kHz regions. ASR’s own Klippel testing found the same pattern in starker terms: THD is very good at 86dB SPL/1m but climbs past 100% in the bass at 96dB SPL/1m, confirming this is not a near-field speaker for high-output bass-heavy material. Cumulative spectral decay (waterfall) also shows a couple of resonances lingering in the 1-2kHz region.

How it compares: Just above it: Ascend Sierra 1 v2 - $599 cheaper, 1.5Hz lower bass extension (-3dB). Just below it: Ascend Acoustics Luna V2 Mini-Monitor Ribbon - $351 cheaper, 1Hz lower bass extension (-3dB).

Bass Extension (-10dB)	43Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	68Hz (measured, Erin's Audio Corner)
Dimensions	11.9"H x 7.9"W x 11"D (302 x 200 x 280.5 mm)
Drivers	130 mm (5.25 in.) aluminium cone woofer, 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption tweeter
Impedance	8 ohms nominal (3.7 ohms minimum above 80Hz, measured by Erin's Audio Corner)
Sensitivity	83dB (measured average, Erin's Audio Corner; 85dB manufacturer specified)
Weight	17.2 lbs / 7.8 kg each
Woofer Cabinet	ported, rear

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