Short answer: the KEF Q Concerto Meta. It ranks #11 of 222 bookshelf speakers by sound quality, rated 4.6/5, at $999.99; the Perlisten S5m ranks #32, rated 4.4/5, and costs $15,990, which makes this an easy call rather than a real tradeoff.
What the KEF Q Concerto Meta does well: A neutral three way bookshelf speaker that sounds consistent from seat to seat, with smooth treble that many rivals at its price lack. The tradeoff: Radiation pattern measures about ±50°, narrower than the reviewer’s preferred ±60° for a stronger sense of envelopment.
What the Perlisten S5m does well: A large three way bookshelf speaker with a beryllium tweeter array, close to neutral sound, and praised bass precision and dynamics. The catch: Listening-window smoothness (0.655) and sound-power smoothness (0.503) are middling for the price, with a bass-alignment Q of 2.0 pointing to a moderately resonant low-end rolloff, and at $15990/pair it’s priced closer to a flagship tower than a typical bookshelf speaker.
Buy the KEF Q Concerto Meta. It is rated higher for sound quality than the Perlisten S5m and costs less, so only choose the other one for a particular feature it does better.
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Measured Differences
- Tonal accuracy above the bass: with a subwoofer taking the low end, the Perlisten S5m scores 8.4 against 7.7 for the KEF Q Concerto Meta on the Spinorama preference scale. Its frequency response and off-axis sound are smoother, so voices and instruments sound closer to the recording.
- Efficiency: the Perlisten S5m is rated at 89.6 dB sensitivity against 84.2 dB for the KEF Q Concerto Meta, so it plays as loud with roughly a third of the amplifier power.
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Specifications Side By Side
| KEF Q Concerto Meta | Perlisten S5m | |
|---|---|---|
| Price | $999.99 per pair | $15,990 per pair |
| Ranked | #11 of 222 in Large Size Bookshelf Speakers | #32 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 35Hz (measured, Erin’s Audio Corner) | 38.7Hz (derived, log-interpolated between manufacturer spinorama -9dB/-12dB points) |
| Bass Extension (-3dB) | 53Hz (measured, Erin’s Audio Corner) | 76.0Hz (manufacturer spinorama data, vented configuration) |
| Dimensions | 16.3”H x 8.3”W x 12.4”D (414 x 210.8 x 315 mm) | 23.6”H x 9.4”W x 15.7”D (600 x 240 x 400 mm), without stand |
| Impedance | 4 ohms nominal (3.3 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 4 ohms nominal, 3.0 ohms minimum |
| Drivers | 165 mm (6.5 in.) hybrid aluminium cone woofer, 100 mm (4 in.) aluminium cone midrange, 19 mm (0.75 in.) vented aluminium dome with MAT tweeter | 28mm beryllium dome tweeter, 2x 28mm Textreme TPCD dome midranges, 2x 180mm (7”) Textreme TPCD woofers |
| Sensitivity | 84.2dB (measured average, Erin’s Audio Corner) | 89.6dB @ 2.83V/1m |
| Weight | 20.9 lbs (9.5 kg) each | 41.9 lbs (19.0 kg) each |
| Woofer Cabinet | ported, rear | - |
| Spinorama Preference Score | 6.01 | 6.41 |
| Spinorama Preference Score with Perfect Sub | 7.71 | 8.42 |
| DIY Kit | No | No |
| Enclosure | - | 3-way, switchable bass reflex / acoustic suspension |
| Power Handling | - | 50-300W RMS recommended amplifier power |
| Frequency Response | - | 80Hz-20kHz +/-1.5dB |
| Certification | - | THX Dominus, THX Ultra |
| Warranty | - | 5 years, extendable to 6 with product registration |
| Country | - | Designed in the United States (Verona, Wisconsin) |
| Maximum SPL | - | 117dB peak (manufacturer specified) |
Where the Ratings Come From
- KEF Q Concerto Meta: Spinorama.org measurements and reviews by Erin’s Audio Corner.
- Perlisten S5m: Spinorama.org measurements and reviews by StereoNET and Stereo Magazine.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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