Short answer: the Arendal 1961 Monitor for better sound quality, the KEF Q100 for the lower price. The Arendal 1961 Monitor ranks #8 of 71 bookshelf speakers at $1150. The KEF Q100 ranks #53 at $550, $600 cheaper.
What the KEF Q100 offers: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive. Watch for: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound.
What the Arendal 1961 Monitor offers: A physically robust build the reviewer calls “a little bit of a tank,” delivering low compression, low distortion, and overall really good neutrality - one of the reviewer’s top 10 picks under $1,500 across roughly 250 speakers tested. Works well both as home theater mains and as surrounds. Independent ASR Klippel measurements corroborate the low-distortion finding: THD at 86dB SPL/1m stays well below the reviewer’s audibility threshold, and even at 96dB SPL/1m it stays “far better than most bookshelves” thanks to the built-in high-pass filter that protects the woofers. Watch for: Bass rolls off around 70-80Hz, so it cannot be used as full-range mains for music without a subwoofer, and a sub is recommended for home theater use as well. Vertical radiation window is narrow, typical of MTM (mid-tweeter-mid) layouts - tighter than a standard two-way’s roughly ±20° - so a second home theater row sitting above or below the tweeter axis will hear a noticeably different tonal balance. ASR’s CEA2034 measurements show the response is elevated above 2kHz with resonant peaks around 3kHz and 9kHz, leading the reviewer to predict it will “likely sound bright.” Those same resonances show up as lingering ridges in the cumulative spectral decay (waterfall) at 96dB SPL/1m.
Buy the KEF Q100 if the price matters more than sound quality. Buy the Arendal 1961 Monitor if sound quality matters more than the price.
Specifications Side By Side
| KEF Q100 | Arendal 1961 Monitor | |
|---|---|---|
| Price | $550 Discontinued | $1150 |
| Ranked | #53 of 71 in Medium Size Bookshelf Speakers | #8 of 71 in Medium Size Bookshelf Speakers |
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) | 84Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) | 60Hz (measured, Erin’s Audio Corner) |
| Discontinued | Yes | - |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) | 85.9dB (measured average, Erin’s Audio Corner) |
| Impedance | 8 ohms nominal | 4 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin’s Audio Corner) |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) | - |
| Drivers | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter | 2 x 5.5" woofers, 28mm tweeter |
| Weight | 13 lbs / 5.9 kg each | 16 lbs / 7.25 kg each |
| Dimensions | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) | 16.6"H x 6.4"W x 5.9"D (421.6 x 162.6 x 149.9 mm) |
| Woofer Cabinet | ported, rear | sealed |
| Crossover Frequency | - | 1500Hz |
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The Two Speakers In Full
KEF Q100: $550 Discontinued eBay
Pros: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive.
Cons: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound. Discontinued.
Full KEF Q100 review and specifications →
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) |
| Dimensions | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) |
| Discontinued | Yes |
| Drivers | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 13 lbs / 5.9 kg each |
| Woofer Cabinet | ported, rear |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Arendal 1961 Monitor: $1150 Arendalsound eBay
Pros: A physically robust build the reviewer calls “a little bit of a tank,” delivering low compression, low distortion, and overall really good neutrality - one of the reviewer’s top 10 picks under $1,500 across roughly 250 speakers tested. Works well both as home theater mains and as surrounds. Independent ASR Klippel measurements corroborate the low-distortion finding: THD at 86dB SPL/1m stays well below the reviewer’s audibility threshold, and even at 96dB SPL/1m it stays “far better than most bookshelves” thanks to the built-in high-pass filter that protects the woofers.
Cons: Bass rolls off around 70-80Hz, so it cannot be used as full-range mains for music without a subwoofer, and a sub is recommended for home theater use as well. Vertical radiation window is narrow, typical of MTM (mid-tweeter-mid) layouts - tighter than a standard two-way’s roughly ±20° - so a second home theater row sitting above or below the tweeter axis will hear a noticeably different tonal balance. ASR’s CEA2034 measurements show the response is elevated above 2kHz with resonant peaks around 3kHz and 9kHz, leading the reviewer to predict it will “likely sound bright.” Those same resonances show up as lingering ridges in the cumulative spectral decay (waterfall) at 96dB SPL/1m.
Full Arendal 1961 Monitor review and specifications →
| Bass Extension (-10dB) | 60Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 84Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 1500Hz |
| Dimensions | 16.6"H x 6.4"W x 5.9"D (421.6 x 162.6 x 149.9 mm) |
| Drivers | 2 x 5.5" woofers, 28mm tweeter |
| Impedance | 4 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin's Audio Corner) |
| Sensitivity | 85.9dB (measured average, Erin's Audio Corner) |
| Weight | 16 lbs / 7.25 kg each |
| Woofer Cabinet | sealed |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner Website Arendal 1961 Monitor More from Erin’s Audio Corner →
- Audio Science Review Arendal 1961 Monitor More from Audio Science Review →
- Erin’s Audio Corner: I Tested 250 Speakers So You Don’t Have To!
- Audio Science Review Measurements (spinorama.org)
- Reddit Search for Arendal 1961 Monitor Review
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