Short answer: the Arendal 1961 Tower. It ranks #19 of 54 floorstanding speakers by sound quality at $1900; the Morel Avyra 633 ranks #21 and costs $2000, so there is not much of a tradeoff to weigh.
What the Arendal 1961 Tower offers: Exceptional output cleanliness for a slim tower: Erin measured under 1% THD to about 100Hz at 96dB/1m and only crossed 3% near 80Hz, while compression was better than several physically larger competitors. Watch for: Erin measured F3 at 62Hz and F10 at 43Hz, so the four woofers prioritize clean output over deep extension; a subwoofer remains necessary.
What the Morel Avyra 633 offers: A 2.5-way floorstanding tower with two 6” mid-woofers (each with an unusually large 3” voice coil for better power handling) and a dome tweeter; the bottom woofer only covers up to about 250Hz while the top woofer runs all the… Watch for: A bit bright out of the box - extra tweeter energy in the 4-7kHz region (which also shows up as nonlinearity in the early-reflections directivity data, making it harder to fully correct with EQ) reflects off nearby sidewalls and…
Buy the Arendal 1961 Tower. It ranks higher for sound quality than the Morel Avyra 633 and costs less, so there is no real case for the other one.
Specifications Side By Side
| Arendal 1961 Tower | Morel Avyra 633 | |
|---|---|---|
| Price | $1,900/pair | $2,000.00 |
| Ranked | #19 of 54 in Large Size Floorstanding Speakers | #21 of 54 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | 62Hz (measured, Erin’s Audio Corner) | 50Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | 32Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 86.5dB/2.83V/1m (measured, Erin’s Audio Corner) | 86.5dB (measured, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal; dips below 4 ohms (measured, Erin’s Audio Corner) | 4 ohms nominal (3.8 ohms minimum, measured, Erin’s Audio Corner) |
| Drivers | Four 5.5-inch woofers; 28mm waveguided soft dome | Dome tweeter, two 6" mid-woofers (3" voice coil) |
| Enclosure | Sealed HDF | - |
| Crossover Frequency | - | 250Hz, 2.2kHz |
| Woofer Cabinet | - | ported |
| Dimensions | - | 38.7"H x 12.8"W x 12.2"D (982 x 326 x 310 mm) |
| Weight | - | 48.5 lbs / 22 kg each |
| Frequency Response | - | 25Hz - 20kHz (±3dB, manufacturer specified) |
| Recommended Power | - | 200-1000W |
| Country of Origin | - | Israel |
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- Arendal 1961 Tower vs KLH Model Five
- Morel Avyra 633 vs KLH Model Five
The Two Speakers In Full
Arendal 1961 Tower: $1,900/pair Arendal Sound
Pros: Exceptional output cleanliness for a slim tower: Erin measured under 1% THD to about 100Hz at 96dB/1m and only crossed 3% near 80Hz, while compression was better than several physically larger competitors. The response and listening window are broadly neutral, early-reflections and sound-power directivity are well controlled, and the waveguided dome supports stable imaging. A sealed HDF cabinet, four 5.5-inch woofers and a ten-year warranty provide serious theater-grade engineering in a tiny footprint.
Cons: Erin measured F3 at 62Hz and F10 at 43Hz, so the four woofers prioritize clean output over deep extension; a subwoofer remains necessary. Sensitivity is a moderate 86.5dB and impedance dips below four ohms, which may challenge budget AVRs even though a competent power amplifier has no issue. The optimal axis is roughly 5° above the tweeter and radiation begins narrowing around 1.3kHz, so seat height and toe-in deserve attention.
Full Arendal 1961 Tower review and specifications →
| Bass Extension (-10dB) | 43Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 62Hz (measured, Erin's Audio Corner) |
| Drivers | Four 5.5-inch woofers; 28mm waveguided soft dome |
| Enclosure | Sealed HDF |
| Impedance | 4 ohms nominal; dips below 4 ohms (measured, Erin's Audio Corner) |
| Sensitivity | 86.5dB/2.83V/1m (measured, Erin's Audio Corner) |
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Morel Avyra 633: $2,000.00
Pros: A 2.5-way floorstanding tower with two 6” mid-woofers (each with an unusually large 3” voice coil for better power handling) and a dome tweeter; the bottom woofer only covers up to about 250Hz while the top woofer runs all the way to the 2.2kHz crossover point. Easy to drive at a nominal 4 ohms (minimum 3.8 ohms). On-axis linearity measures within about ±2.25dB - genuinely impressive for a tower in this class, enough that the reviewer said he’d have guessed a $4,000-5,000 per pair price just from the look and the data alone. F3 of about 50Hz and F10 of about 32Hz give reasonable kick-drum-level bass without a subwoofer. Wide horizontal radiation around ±70° with good continuity outside the treble region. Harmonic distortion stays under 1% THD to about 100Hz at both 86dB and 96dB, and using an 80Hz subwoofer crossover barely changes midrange distortion - a sign the drive units themselves are good quality rather than excursion-limited. About 20dB of usable dynamic range. No through-holes for spikes, so no risk of dropped hardware during setup.
Cons: A bit bright out of the box - extra tweeter energy in the 4-7kHz region (which also shows up as nonlinearity in the early-reflections directivity data, making it harder to fully correct with EQ) reflects off nearby sidewalls and can sound tipped-up or edgy; a single EQ band (about 4.4kHz, -2dB, Q of 1) or absorption panels placed 60-80° off-axis on the sidewalls resolves it. Best aimed directly at the listener rather than toed out, since the top end already rolls off a little at wider angles. Imaging loses a bit of precision specifically in that lower-treble region. Multitone distortion exceeds the reviewer’s 3% comfort threshold at higher output. Real bass extension below 50Hz still needs a subwoofer. Not the same speaker as the Parts Express “Solstice” DIY kit despite surface similarities - different tweeter, different (ported vs. transmission line) enclosure, and measurably different woofers.
Full Morel Avyra 633 review and specifications →
| Bass Extension (-10dB) | 32Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 50Hz (measured, Erin's Audio Corner) |
| Country of Origin | Israel |
| Crossover Frequency | 250Hz, 2.2kHz |
| Dimensions | 38.7"H x 12.8"W x 12.2"D (982 x 326 x 310 mm) |
| Drivers | Dome tweeter, two 6" mid-woofers (3" voice coil) |
| Frequency Response | 25Hz - 20kHz (±3dB, manufacturer specified) |
| Impedance | 4 ohms nominal (3.8 ohms minimum, measured, Erin's Audio Corner) |
| Recommended Power | 200-1000W |
| Sensitivity | 86.5dB (measured, Erin's Audio Corner) |
| Weight | 48.5 lbs / 22 kg each |
| Woofer Cabinet | ported |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons