Short answer: the Arendal 1961 Monitor. It ranks #8 of 168 bookshelf speakers by sound quality (rated 4.3/5) at $1,150 and is still sold new; the Acoustic Energy AE100 Mk2 ranks #111 (rated 2.9/5) and is discontinued, so it is only an option used.
The Arendal 1961 Monitor is the better-sounding option. 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. 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.
The Acoustic Energy AE100 Mk2 is the more accurate, deeper-bass pick. Good directivity linearity: on-axis and off-axis response track each other well despite an otherwise uneven overall response, which means the tonal problems can be EQ’d out with reasonably good success. Its measured preference score, a predictor of how neutral it sounds, is 4.96 against 3.38 for the Arendal 1961 Monitor. Its bass reaches about 63Hz before falling 3dB, against 84Hz for the Arendal 1961 Monitor. The catch: High-frequency level runs noticeably too hot regardless of placement: the reviewer tried four different setups (near/far from wall, on-axis, 30° off-axis) at two listening distances and couldn’t get it to sound right at any of them.
Buy the Arendal 1961 Monitor. It is rated higher for sound quality and still sold new, while the Acoustic Energy AE100 Mk2 is discontinued.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Arendal 1961 Monitor | Acoustic Energy AE100 Mk2 | |
|---|---|---|
| Price | $1150 per pair | $399 per pair Discontinued |
| Ranked | #8 of 168 in Medium Size Bookshelf Speakers | #111 of 168 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 60Hz (measured, Erin’s Audio Corner) | 42Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 84Hz (measured, Erin’s Audio Corner) | 63Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 1500Hz | 2.9kHz |
| Dimensions | 16.6”H x 6.4”W x 5.9”D (421.6 x 162.6 x 149.9 mm) | 11.4”H x 6.5”W x 9.8”D (290 x 165 x 250 mm) |
| Impedance | 4 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 6 ohms nominal, 4.7 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85.9dB (measured average, Erin’s Audio Corner) | 84dB (measured average, Erin’s Audio Corner) |
| Drivers | 2 x 5.5” woofers, 28mm tweeter | 5.25” midwoofer, 1” soft fabric dome tweeter with waveguide |
| Weight | 16 lbs (7.25 kg) each | 20.1 lbs (9.1 kg) each |
| Woofer Cabinet | sealed | ported, rear slot port |
| Spinorama Preference Score | 3.38 | 4.96 |
| Spinorama Preference Score with Perfect Sub | 6.69 | 7.18 |
| DIY Kit | No | No |
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The Two Speakers In Full
Arendal 1961 Monitor: $1150 per pair Arendal Sound eBay
Same family: the Arendal Sound 1961 Bookshelf (smaller bookshelf, ranked lower, rated 4.2/5), the Arendal 1961 Tower (floorstanding, rated 4.4/5) and the Arendal Sound 1961 Center (center, rated 3.6/5).
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. Measured bass extension of 84Hz (-3dB), with a measured sensitivity of 85.9dB.
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 |
| DIY Kit | No |
| 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) |
| Spinorama Preference Score | 3.38 |
| Spinorama Preference Score with Perfect Sub | 6.69 |
| Weight | 16 lbs (7.25 kg) each |
| Woofer Cabinet | sealed |
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Acoustic Energy AE100 Mk2: $399 per pair Discontinued Amazon eBay
Pros: Good directivity linearity: on-axis and off-axis response track each other well despite an otherwise uneven overall response, which means the tonal problems can be EQ’d out with reasonably good success. Wide horizontal radiation, about ±50°. Nicely finished cabinet: the reviewer specifically called out the fit and finish as a genuine positive. Both units of the review pair measured closely matched to each other. Measured bass extension of 63Hz (-3dB), with a measured sensitivity of 84dB.
Cons: High-frequency level runs noticeably too hot regardless of placement: the reviewer tried four different setups (near/far from wall, on-axis, 30° off-axis) at two listening distances and couldn’t get it to sound right at any of them. A mid-range dip that the reviewer attributes to internal cabinet resonance rather than intentional baffle-step compensation, reinforced by an internal inspection showing no cross-bracing and a slot port that may itself be resonating when tapped. Small tweeter waveguide magnet suggests limited power handling headroom. At this price and radiation pattern, the reviewer would pick the ELAC DBR62 (more neutral, similar ±60° pattern) or, for less money, the ELAC Debut 2.0 B6.2 over this speaker; the KEF Q150 and SVS Prime Bookshelf are also called out as more linear alternatives nearby in price. Discontinued.
Full Acoustic Energy AE100 Mk2 review and specifications →
| Bass Extension (-10dB) | 42Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 63Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 2.9kHz |
| DIY Kit | No |
| Dimensions | 11.4”H x 6.5”W x 9.8”D (290 x 165 x 250 mm) |
| Drivers | 5.25” midwoofer, 1” soft fabric dome tweeter with waveguide |
| Impedance | 6 ohms nominal, 4.7 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 84dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.96 |
| Spinorama Preference Score with Perfect Sub | 7.18 |
| Weight | 20.1 lbs (9.1 kg) each |
| Woofer Cabinet | ported, rear slot port |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons