Short answer: the Morel Avyra 633. It ranks #48 of 228 floorstanding speakers by sound quality, rated 4.4/5, at $2,000; the KLH Model Five ranks #125, rated 4.0/5, and costs $2,998, so there is little reason to consider the other one.
The Morel Avyra 633 is the more accurate option. Floorstanding speakers with impressively even, accurate sound, wide dispersion, kick drum bass without a subwoofer and an easy load to drive. Its measured preference score, a predictor of how neutral it sounds, is 5.43 against 4.76 for the KLH Model Five. The tradeoff: 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.
The case for the KLH Model Five: A retro styled sealed tower with a wide, spacious soundstage, low distortion and useful treble adjustments for your room. Watch for: On-axis response is visibly irregular because the wide vintage baffle creates diffraction, and the upper/lower midbass mismatch around 200Hz can sound lean away from the intended wall placement.
Buy the Morel Avyra 633. It is rated higher for sound quality than the KLH Model Five and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Passive Home rankings.
Measured Differences
- Tonal accuracy above the bass: with a subwoofer taking the low end, the Morel Avyra 633 scores 7.2 against 6.7 for the KLH Model Five on the Spinorama preference scale. Its frequency response and off-axis sound are smoother, so voices and instruments sound closer to the recording.
- Close enough not to matter: bass extension (32 Hz vs 32.2 Hz, 10 dB down).
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Specifications Side By Side
| Morel Avyra 633 | KLH Model Five | |
|---|---|---|
| Price | $2,000 per pair | $2,998.00 per pair |
| Ranked | #48 of 228 in Large Size Floorstanding Speakers | #125 of 228 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 32Hz (measured, Erin’s Audio Corner) | 32.2Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) | 52Hz (measured, Erin’s Audio Corner) |
| Drivers | Dome tweeter, two 6” mid-woofers (3” voice coil) | 10” paper-cone woofer, 4” paper-cone midrange, 1” aluminum-dome tweeter |
| Sensitivity | 86.5dB (measured, Erin’s Audio Corner) | About 85dB @ 2.83V/1m (measured, Erin’s Audio Corner; 87.5dB free-field manufacturer specified) |
| Impedance | 4 ohms nominal (3.8 ohms minimum, measured, Erin’s Audio Corner) | 6 ohms nominal, 3.5 ohms minimum at 140Hz (manufacturer specified) |
| Crossover Frequency | 250Hz, 2.2kHz | - |
| Woofer Cabinet | ported | sealed acoustic suspension |
| Dimensions | 38.7”H x 12.8”W x 12.2”D (982 x 326 x 310 mm) | 26”H x 13.8”W x 11.5”D (660 x 350 x 292 mm) without stand |
| Weight | 48.5 lbs (22 kg) each | 44.1 lbs (20 kg) each without stand; 52 lbs (23.6 kg) with stand |
| Frequency Response | 25Hz - 20kHz (±3dB, manufacturer specified) | - |
| Recommended Power | 200-1000W | - |
| Country | Israel | - |
| Spinorama Preference Score | 5.43 | 4.76 |
| Spinorama Preference Score with Perfect Sub | 7.20 | 6.71 |
| DIY Kit | No | No |
Where the Ratings Come From
- Morel Avyra 633: Spinorama.org measurements and reviews by Erin’s Audio Corner.
- KLH Model Five: Spinorama.org measurements and reviews by Erin’s Audio Corner.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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