Short answer: the Arendal Sound 1723 Monitor THX. It ranks #48 of 134 bookshelf speakers by sound quality, rated 4.2/5, at $2,400. The Arendal Sound 1723 Monitor S THX ranks #55, rated 4.1/5, at $2,200, $200 cheaper, not enough of a saving to outweigh the sound-quality gap.
The case for the Arendal Sound 1723 Monitor THX: Independent ASR Klippel data shows a narrow 1.8dB reference band, 0.391 listening-window smoothness, and useful bass extension to 48.3Hz at -6dB. The catch: The measured on-axis average absolute deviation is 0.979dB and the sound-power directivity-index standard deviation is 3.63, so its response and dispersion are less even than the best alternatives.
Why pick the Arendal Sound 1723 Monitor S THX: A THX-certified two-way with twin 6.5-inch woofers around a waveguided 28mm tweeter, and port plugs that let you run it sealed, with one vent or two to suit the room. Watch for: In the configuration measured, the bass response starts to fall early, about 77Hz at -3dB, though it keeps going to about 50Hz at -6dB and 33Hz at -10dB, so it benefits from a subwoofer or placement near a wall.
Buy the Arendal Sound 1723 Monitor THX. It is rated higher for sound quality, and the $200 you would save on the Arendal Sound 1723 Monitor S THX does not close the gap.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Arendal Sound 1723 Monitor THX | Arendal Sound 1723 Monitor S THX | |
|---|---|---|
| Price | $2,400 per pair | $2,200 per pair |
| Ranked | #48 of 134 in Large Size Bookshelf Speakers | #55 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-3dB) | 63Hz (measured, spinorama.org) | 76.9Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | approximately 37Hz (measured, spinorama.org) | 32.9Hz (measured, Erin’s Audio Corner) |
| Drivers | Two 8-inch woofers; 28mm waveguided tweeter | Two 6.5-inch woofers; 28mm waveguided tweeter |
| Impedance | 4 ohms nominal | 4 ohms nominal |
| Certification | THX Ultra | THX Ultra |
| Spinorama Preference Score | 5.16 | 5.07 |
| Spinorama Preference Score with Perfect Sub | 7.30 | 7.08 |
| Sensitivity | 89dB (manufacturer specified, 2.83V/1m) | 88.7dB (manufacturer specified, 2.83V/1m) |
| Dimensions | 15.7”H x 10.8”W x 25”D (400 x 275 x 635 mm) | 22.4”H x 9.6”W x 12.6”D (569 x 245 x 320 mm) |
| Weight | 58.9 lbs (26.7 kg) each | 41.2 lbs (18.7 kg) each |
| DIY Kit | No | No |
| Frequency Response | - | 46Hz-20kHz ±3dB with two vents, 66Hz sealed (manufacturer specified) |
| Woofer Cabinet | - | sealed or ported (port plugs included) |
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- Wharfedale Super Linton vs Arendal Sound 1723 Monitor THX
- ELAC Debut 3.0 DB63 vs Arendal Sound 1723 Monitor THX
Prices on this page were last checked September 30, 2026 at 2:57 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Arendal Sound 1723 Monitor THX: $2,400 per pair Arendal Sound eBay
Pros: Independent ASR Klippel data shows a narrow 1.8dB reference band, 0.391 listening-window smoothness, and useful bass extension to 48.3Hz at -6dB. Its preference score rises from 5.16 to 7.30 with a subwoofer. Dual 8-inch woofers, a waveguided tweeter, robust HDF construction, and THX Ultra certification suit high-output rooms. Measured bass extension of 63Hz (-3dB).
Cons: The measured on-axis average absolute deviation is 0.979dB and the sound-power directivity-index standard deviation is 3.63, so its response and dispersion are less even than the best alternatives. Bass reaches only 63Hz at -3dB despite the very large cabinet, and the 1.239 low-frequency Q indicates a pronounced alignment. At roughly 60 lb each, these require substantial stands and space.
Full Arendal Sound 1723 Monitor THX review and specifications →
| Bass Extension (-10dB) | approximately 37Hz (measured, spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 63Hz (measured, spinorama.org) |
| Certification | THX Ultra |
| DIY Kit | No |
| Dimensions | 15.7”H x 10.8”W x 25”D (400 x 275 x 635 mm) |
| Drivers | Two 8-inch woofers; 28mm waveguided tweeter |
| Impedance | 4 ohms nominal |
| Sensitivity | 89dB (manufacturer specified, 2.83V/1m) |
| Spinorama Preference Score | 5.16 |
| Spinorama Preference Score with Perfect Sub | 7.30 |
| Weight | 58.9 lbs (26.7 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Arendal Sound 1723 Monitor THX vs Power Sound Audio MT-110-M
- Arendal Sound 1723 Monitor THX vs ELAC Debut 3.0 DB63
- Arendal Sound 1723 Monitor THX vs Paradigm Founder 40B
- Arendal Sound 1723 Monitor THX vs Wharfedale Super Linton
- Arendal Sound 1723 Monitor THX vs Klipsch RP-600M II
- Arendal Sound 1723 Monitor THX vs KEF R3
- Arendal Sound 1723 Monitor THX vs KEF Q Concerto Meta
- Arendal Sound 1723 Monitor THX vs KEF R3 Meta
Arendal Sound 1723 Monitor S THX: $2,200 per pair Arendal Sound eBay
Pros: A THX-certified two-way with twin 6.5-inch woofers around a waveguided 28mm tweeter, and port plugs that let you run it sealed, with one vent or two to suit the room. Erin’s Audio Corner measured a listening window within a 2.4dB span from 300Hz to 5kHz, a smooth listening window (0.77) and predicted in-room response (0.71), and a preference score of 5.07 that rises to 7.08 with an ideal subwoofer. Sensitivity is a healthy 88.7dB. Measured bass extension of 76.9Hz (-3dB).
Cons: In the configuration measured, the bass response starts to fall early, about 77Hz at -3dB, though it keeps going to about 50Hz at -6dB and 33Hz at -10dB, so it benefits from a subwoofer or placement near a wall. It is large and heavy for a stand-mount at 56.9cm tall and 18.7kg, presents a 4-ohm load, and is sold direct by Arendal.
Full Arendal Sound 1723 Monitor S THX review and specifications →
| Bass Extension (-10dB) | 32.9Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 76.9Hz (measured, Erin’s Audio Corner) |
| Certification | THX Ultra |
| DIY Kit | No |
| Dimensions | 22.4”H x 9.6”W x 12.6”D (569 x 245 x 320 mm) |
| Drivers | Two 6.5-inch woofers; 28mm waveguided tweeter |
| Frequency Response | 46Hz-20kHz ±3dB with two vents, 66Hz sealed (manufacturer specified) |
| Impedance | 4 ohms nominal |
| Sensitivity | 88.7dB (manufacturer specified, 2.83V/1m) |
| Spinorama Preference Score | 5.07 |
| Spinorama Preference Score with Perfect Sub | 7.08 |
| Weight | 41.2 lbs (18.7 kg) each |
| Woofer Cabinet | sealed or ported (port plugs included) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons