The Morel Avyra 633 ranks #28 out of 73 total Large Size Floorstanding Speakers for sound quality. See all Passive Home rankings for every top pick.
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#28 Morel Avyra 633: $2,000.00 per pair eBay
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. Measured bass extension of 50Hz (-3dB), with a measured sensitivity of 86.5dB.
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.
How it compares: Just above it: Arendal 1961 Tower - $100 cheaper. Just below it: Magico A5 - $22800 more, 1.5Hz higher bass extension (-3dB).
| Bass Extension (-10dB) | 32Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) |
| Country | Israel |
| Crossover Frequency | 250Hz, 2.2kHz |
| DIY Kit | No |
| 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) |
| Spinorama Preference Score | 5.43 |
| Spinorama Preference Score with Perfect Sub | 7.20 |
| Weight | 48.5 lbs (22 kg) each |
| Woofer Cabinet | ported |
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