Short answer: the KEF R3 Meta. It ranks #10 of 131 bookshelf speakers by sound quality, rated 4.6/5, at $2,499.99. The Arendal 1723 Bookshelf S THX ranks #43, rated 4.2/5, at $1,499, $1,000.99 cheaper, which does not close the gap in sound quality.
The case for the KEF R3 Meta: Three-way design with an unconventional concentric layout: the 1” tweeter is recessed into the throat of the 5.25” midrange driver, deeper integration than a standard coaxial arrangement. Watch for: Pointed straight on-axis, there’s a 1-2dB bump around 9kHz that stays consistent across angles thanks to the constant-directivity waveguide - only toeing the speaker out about 10° tames it.
What the Arendal 1723 Bookshelf S THX does well: Exceptionally controlled radiation for a conventional two-way: Erin found the early-reflections directivity index smooth enough for broad-band EQ, while horizontal coverage remains orderly through the 1.5kHz crossover. The tradeoff: Erin measured only 81.6dB/2.83V/1m sensitivity, so substantial amplifier voltage is required.
Buy the KEF R3 Meta. It is rated higher for sound quality, and the $1,000.99 saving on the Arendal 1723 Bookshelf S THX is not enough to make up the difference.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| KEF R3 Meta | Arendal 1723 Bookshelf S THX | |
|---|---|---|
| Price | $2,499.99 per pair | $1,499 per pair |
| Ranked | #10 of 131 in Large Size Bookshelf Speakers | #43 of 131 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) | 44.6Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) | ~80Hz (measured, Erin’s Audio Corner) |
| Dimensions | 16.6”H x 7.9”W x 13.2”D (421.6 x 200.7 x 335.3 mm) | 15.2”H x 9.6”W x 12.6”D (385 x 245 x 320 mm) |
| Impedance | 4 ohms nominal (3.2 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 4 ohms nominal |
| Drivers | 6.5” Hybrid aluminum ported woofer, 5” aluminum cone midrange, 1” vented aluminium dome with MAT tweeter | 6.5-inch woofer; 28mm waveguided soft-dome tweeter |
| Sensitivity | 85.9dB (measured, Erin’s Audio Corner; 87dB manufacturer specified) | 81.6dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Weight | 27.3 lbs (12.4 kg) each | 32 lbs (14.5 kg) each |
| Woofer Cabinet | ported | - |
| Spinorama Preference Score | 6.10 | 4.89 |
| Spinorama Preference Score with Perfect Sub | 7.91 | 7.68 |
| DIY Kit | No | No |
| Enclosure | - | HDF, sealed/ported |
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The Two Speakers In Full
KEF R3 Meta: $2,499.99 per pair Amazon Crutchfield eBay
Pros: Three-way design with an unconventional concentric layout: the 1” tweeter is recessed into the throat of the 5.25” midrange driver, deeper integration than a standard coaxial arrangement. A quasi sealed/ported bass alignment gives an extended low-end shelf tuned to match typical in-room gain, reaching about 50Hz for most content - deeper than recently-tested rivals like the Focal Aria 906, Polk R200, and an 8” Aperion design. Spinorama measurements show class-leading directivity and sound power, plus very linear on-axis response (at the recommended 10° toe-out) and early-reflections directivity, so it takes EQ exceptionally well. The vertical sweet spot extends to about ±20-30° off the reference axis with nearly identical tonality, unusually wide for a two- or three-way design. A clear upgrade over the earlier, non-Meta R3, eliminating the treble brightness the original had even when toed off-axis. Outperforms similarly-priced rivals (Revel M106, Wharfedale Linton, Philharmonic BMR V2, JBL HDI 1600) specifically on directivity and linearity in the reviewer’s measurements. At $2500/pair, called the best value in its class with near-reference-level anechoic performance. Measured bass extension of 76Hz (-3dB), with a measured sensitivity of 85.9dB.
Cons: Pointed straight on-axis, there’s a 1-2dB bump around 9kHz that stays consistent across angles thanks to the constant-directivity waveguide - only toeing the speaker out about 10° tames it. Minimum impedance dips to about 3.2 ohms nominal (EPDR as low as 1.9 ohms), so it needs a 4-ohm-stable amplifier; a standard AVR likely won’t cut it. Distortion crosses the reviewer’s 3% threshold around 80Hz at 96dB output and shows added deviation again near 50Hz, indicating it runs out of headroom at higher volumes - a subwoofer is recommended for loud listening. Horizontal radiation narrows from about ±70° at low frequency to ±40° at high frequency. Below about 100Hz, compression testing shows fairly wide deviations at both 86dB and 96dB output, though the reviewer notes this is typical for speakers in this size and price class. Current R3 owners who are already happy with that speaker have little reason to upgrade.
Full KEF R3 Meta review and specifications →
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 16.6”H x 7.9”W x 13.2”D (421.6 x 200.7 x 335.3 mm) |
| Drivers | 6.5” Hybrid aluminum ported woofer, 5” aluminum cone midrange, 1” vented aluminium dome with MAT tweeter |
| Impedance | 4 ohms nominal (3.2 ohms minimum above 80Hz, measured, Erin’s Audio Corner) |
| Sensitivity | 85.9dB (measured, Erin’s Audio Corner; 87dB manufacturer specified) |
| Spinorama Preference Score | 6.10 |
| Spinorama Preference Score with Perfect Sub | 7.91 |
| Weight | 27.3 lbs (12.4 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: KEF R3 Meta: The Speaker to Beat. More from Erin’s Audio Corner →
- Erin’s Audio Corner Website KEF R3 Meta Review
- Erin’s Audio Corner: Upgrade Your Sound with These 6 Surprisingly Affordable Speakers!
- Erin’s Audio Corner: My Personal Favorite Speakers Under $2500
- Erin’s Audio Corner: My Top Picks of 2023: Must-Haves Under $3000
- GR-Research: Finally… a Speaker Danny Doesn’t Have to Fix? More from GR-Research →
- New Record Day: The Gold Standard Of "Pretty Good" KEF R3 Meta Review
- Erin’s Audio Corner Measurements (spinorama.org)
- Head-to-Head Comparisons
Arendal 1723 Bookshelf S THX: $1,499 per pair Arendal Sound eBay
Pros: Exceptionally controlled radiation for a conventional two-way: Erin found the early-reflections directivity index smooth enough for broad-band EQ, while horizontal coverage remains orderly through the 1.5kHz crossover. Midbass attack around 120–160Hz is strong, the response is mostly neutral below the treble shelf, and dynamic compression remains under roughly 1dB even near 102dB/1m above the bass. The waveguided 28mm dome and heavy HDF enclosure support clean, cinema-capable output, and sealed/ported flexibility eases subwoofer integration. Measured bass extension of ~80Hz (-3dB), with a measured sensitivity of 81.6dB.
Cons: Erin measured only 81.6dB/2.83V/1m sensitivity, so substantial amplifier voltage is required. Anechoic output rolls off around 80Hz and 3% THD is crossed near 80Hz at 96dB, making an 80Hz subwoofer crossover effectively mandatory. The treble sits a couple dB high on-axis and can sound bright; Erin preferred roughly 20° toe-out or a ~2dB high shelf. A vertical cancellation appears above the tweeter axis, so multi-row installations need careful height/aiming.
Full Arendal 1723 Bookshelf S THX review and specifications →
| Bass Extension (-10dB) | 44.6Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | ~80Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 15.2”H x 9.6”W x 12.6”D (385 x 245 x 320 mm) |
| Drivers | 6.5-inch woofer; 28mm waveguided soft-dome tweeter |
| Enclosure | HDF, sealed/ported |
| Impedance | 4 ohms nominal |
| Sensitivity | 81.6dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.89 |
| Spinorama Preference Score with Perfect Sub | 7.68 |
| Weight | 32 lbs (14.5 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Arendal 1723 Bookshelf S THX vs ELAC Debut 3.0 DB63
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- Arendal 1723 Bookshelf S THX vs Power Sound Audio MT-110-M
- Arendal 1723 Bookshelf S THX vs Wharfedale Linton 85
- Arendal 1723 Bookshelf S THX vs ELAC DBR62
- Arendal 1723 Bookshelf S THX vs Wharfedale Super Linton
- Arendal 1723 Bookshelf S THX vs KEF R3
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