Short answer: the KEF LS50 Meta for better sound quality, the Dayton Audio OPAL1 for the lower price. The KEF LS50 Meta ranks #4 of 34 bookshelf speakers at $1599. The Dayton Audio OPAL1 ranks #16 at $1038.99, $560.01 cheaper.
What the KEF LS50 Meta offers: Uni-Q concentric driver mounts a 1” vented aluminum dome tweeter at the center of a 5.25” aluminum cone woofer, rated 79Hz-20kHz+. Watch for: F3 of 67Hz and F10 of 42Hz mean it doesn’t get much below 50Hz in-room; a subwoofer is recommended for real bass.
What the Dayton Audio OPAL1 offers: A 2-way bookshelf speaker with a 5.25” mid-woofer (large surround) and a 1” dome tweeter, plus two passive radiators on the rear panel. Watch for: Measured average sensitivity is notably low at about 75.7dB - well under the 78dB spec - due to a nearly 3dB dip through the midrange, and the reviewer needed serious amplification (monoblock power amps, not just a compact…
Buy the KEF LS50 Meta if sound quality matters more than the price. Buy the Dayton Audio OPAL1 if the price matters more than sound quality.
Specifications Side By Side
| KEF LS50 Meta | Dayton Audio OPAL1 | |
|---|---|---|
| Price | $1,599.00 | $1,038.99 |
| Ranked | #4 of 34 in Medium Size Bookshelf Speakers | #16 of 34 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | 30Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 68Hz (measured, Erin’s Audio Corner) | 55Hz (measured, Erin’s Audio Corner) |
| Dimensions | 11.9"H x 7.9"W x 11"D (302 x 200 x 280.5 mm) | 14"H x 7"W x 9.5"D |
| Impedance | 8 ohms nominal (3.7 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 8 ohms nominal (4.3 ohms minimum @ 4.4kHz, measured, Erin’s Audio Corner) |
| Sensitivity | 83dB (measured average, Erin’s Audio Corner; 85dB manufacturer specified) | 75.7dB (measured by Erin’s Audio Corner; 78dB manufacturer specified) |
| Drivers | 130 mm (5.25 in.) aluminium cone woofer, 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption tweeter | 5.25" mid-woofer, 1" dome tweeter, dual rear passive radiators |
| Weight | 17.2 lbs / 7.8 kg each | 20.8 lbs each |
| Woofer Cabinet | ported, rear | passive radiator, rear (dual) |
| Frequency Response | - | 32Hz - 20kHz (-3dB, half-space, manufacturer specified) |
| Power Handling | - | 200W RMS (75-200W recommended amplifier power) |
| Crossover Frequency | - | 2,200Hz |
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The Two Speakers In Full
KEF LS50 Meta: $1,599.00 Amazon Crutchfield
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.
Full KEF LS50 Meta review and specifications →
| 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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- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: Unveiling the KEF LS50 Meta: The Truth Behind the Hype
- Erin’s Audio Corner Website KEF LS50 Meta
- Audio Science Review KEF LS50 Meta
- GR-Research: KEF LS50 Meta! Worthy of HYPE?
- Erin’s Audio Corner: My Top Picks of 2023: Must-Haves Under $3000
- Reddit Search for KEF LS50 Meta Review
- Head-to-Head Comparisons
- KEF LS50 Meta vs Ascend Sierra 1 v2
- KEF LS50 Meta vs Arendal 1961 Monitor
- KEF LS50 Meta vs Moondrop M4P MTM
- KEF LS50 Meta vs Philharmonic Ceramic Mini
- KEF LS50 Meta vs Audiofirst Fidelia
- KEF LS50 Meta vs Klipsch RP-500M II
- KEF LS50 Meta vs Wharfedale Super Denton
- KEF LS50 Meta vs Wharfedale Diamond 12.1
- See all 15 comparisons
Dayton Audio OPAL1: $1,038.99 Dayton Audio
Pros: A 2-way bookshelf speaker with a 5.25” mid-woofer (large surround) and a 1” dome tweeter, plus two passive radiators on the rear panel. A bass shelf in its response lets it sit closer to a wall than many speakers without sounding overly boomy, a similar design trait to the KEF R3 Meta. Measured F3 of about 55Hz and F10 of about 30Hz. Harmonic distortion is good for a 5.25” mid-woofer at both 86dB and 96dB output, and dynamic range/compression is reasonably well controlled up to about 96dB. Horizontal radiation of about ±60° lands right in the reviewer’s personally preferred range for soundstage width. On-axis, the sound is a little forward-leaning rather than dull, and EQ can bring back midrange fullness and a bigger sense of image spread if the stock tuning’s slightly recessed midrange isn’t to your taste.
Cons: Measured average sensitivity is notably low at about 75.7dB - well under the 78dB spec - due to a nearly 3dB dip through the midrange, and the reviewer needed serious amplification (monoblock power amps, not just a compact streaming amp) to drive them to real listening levels for bass testing. On-axis response is within only about ±3dB (a 6dB window) - not very linear - with a mid-range scoop and a bump around 1kHz that makes the sound a bit forward and less full than a neutral reference; EQ can address most of this but makes the image slightly more diffuse in exchange for added fullness. A roughly one-octave-wide diffraction dip between 3-5kHz can’t be corrected with EQ, since boosting it raises reflected energy in a band that’s already elevated off-axis. Top end rolls off fairly quickly above about 10kHz on-axis, and toeing the speakers out more than about 10° loses noticeable air and cymbal/hi-hat detail - best kept close to on-axis. Multitone distortion jumps substantially between 87dB and 96dB SPL/1m, so headroom for loud listening is limited. Vertical window is tight at about ±20°.
Full Dayton Audio OPAL1 review and specifications →
| Bass Extension (-10dB) | 30Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 55Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 2,200Hz |
| Dimensions | 14"H x 7"W x 9.5"D |
| Drivers | 5.25" mid-woofer, 1" dome tweeter, dual rear passive radiators |
| Frequency Response | 32Hz - 20kHz (-3dB, half-space, manufacturer specified) |
| Impedance | 8 ohms nominal (4.3 ohms minimum @ 4.4kHz, measured, Erin's Audio Corner) |
| Power Handling | 200W RMS (75-200W recommended amplifier power) |
| Sensitivity | 75.7dB (measured by Erin's Audio Corner; 78dB manufacturer specified) |
| Weight | 20.8 lbs each |
| Woofer Cabinet | passive radiator, rear (dual) |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons