Short answer: the KEF LS50 Meta for better sound quality, the Klipsch RP-500M II for the lower price. The KEF LS50 Meta ranks #4 of 34 bookshelf speakers at $1599. The Klipsch RP-500M II ranks #8 at $479.99, $1119.01 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 Klipsch RP-500M II offers: Major mid-range clarity improvement over the original RP-500M: about a 5dB fill-in between 1-3kHz in the estimated in-room response, giving a noticeably more resolved, detailed midrange. Watch for: Klipsch’s quoted sensitivity (around 92-93dB) uses an unconventional in-room-based rating rather than the standard anechoic measurement; on an anechoic basis it measures closer to about 85dB, in line with typical bookshelf…
Buy the KEF LS50 Meta if sound quality matters more than the price. Buy the Klipsch RP-500M II if the price matters more than sound quality.
Specifications Side By Side
| KEF LS50 Meta | Klipsch RP-500M II | |
|---|---|---|
| Price | $1,599.00 | $479.99 |
| Ranked | #4 of 34 in Medium Size Bookshelf Speakers | #8 of 34 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | 53Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 68Hz (measured, Erin’s Audio Corner) | 67Hz (measured, Erin’s Audio Corner) |
| Dimensions | 11.9"H x 7.9"W x 11"D (302 x 200 x 280.5 mm) | 13.6"H x 6.8"W x 10.6"D (344.4 x 173 x 270.5 mm) |
| Impedance | 8 ohms nominal (3.7 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 8 ohms nominal, 3.3 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 83dB (measured average, Erin’s Audio Corner; 85dB manufacturer specified) | 85dB (measured, Erin’s Audio Corner) |
| Drivers | 130 mm (5.25 in.) aluminium cone woofer, 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption tweeter | 5.25" Cerametallic™ cone woofer with Faraday rings, 1" LTS Titanium diaphragm tweeter with Hybrid Cross-Section Expanded Tractrix® horn |
| Weight | 17.2 lbs / 7.8 kg each | 13 lbs / 5.9 kg each |
| Woofer Cabinet | ported, rear | ported, rear |
| Crossover Frequency | - | 1530Hz |
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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
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Klipsch RP-500M II: $479.99 Amazon
Pros: Major mid-range clarity improvement over the original RP-500M: about a 5dB fill-in between 1-3kHz in the estimated in-room response, giving a noticeably more resolved, detailed midrange. More neutral and linear overall than its sibling RP-600M II, which carries about 2-3dB more high-frequency energy and a touch more bass but less overall balance. Very precise soundstage imaging and instrument placement. Distortion through the midrange is cleaner than the previous generation.
Cons: Klipsch’s quoted sensitivity (around 92-93dB) uses an unconventional in-room-based rating rather than the standard anechoic measurement; on an anechoic basis it measures closer to about 85dB, in line with typical bookshelf speakers this size, so it isn’t the outlier in efficiency the spec sheet implies. Horizontal dispersion of about ±40-50° is narrower and more directive than the reviewer’s preference for a wider, more enveloping soundstage. Toeing the speaker out to widen the soundstage or soften on-axis brightness comes at some cost to imaging precision. Slightly less clean in the tweeter region than the midrange, likely tied to crossover placement, though not considered a dealbreaker. Low-frequency output is limited - measured around 95dB at 4 meters for the pair before the woofers started to unload, so a subwoofer is recommended for anyone wanting real bass rather than stepping up to a larger model.
Full Klipsch RP-500M II review and specifications →
| Bass Extension (-10dB) | 53Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 67Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 1530Hz |
| Dimensions | 13.6"H x 6.8"W x 10.6"D (344.4 x 173 x 270.5 mm) |
| Drivers | 5.25" Cerametallic™ cone woofer with Faraday rings, 1" LTS Titanium diaphragm tweeter with Hybrid Cross-Section Expanded Tractrix® horn |
| Impedance | 8 ohms nominal, 3.3 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 85dB (measured, Erin's Audio Corner) |
| Weight | 13 lbs / 5.9 kg each |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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