Short answer: the AsciLab C6B. It ranks #6 of 222 bookshelf speakers by sound quality, rated 4.7/5, at $1,145; the Sonus Faber Lumina II Amator ranks #188, rated 3.0/5, and costs $2,000, so there is little reason to consider the other one.
The AsciLab C6B is the better-sounding, deeper-bass pick. Bookshelf speakers with very accurate sound and an unusually wide, stable soundstage, for any seating position. Its bass reaches about 54Hz before falling 3dB, against 63Hz for the Sonus Faber Lumina II Amator. The tradeoff: Bass rolls off around 50Hz in-room (F3 54Hz, F10 35Hz), so a subwoofer is needed for real extension below that.
What the Sonus Faber Lumina II Amator does well: A luxurious Italian bookshelf speaker with a gorgeous cabinet, solid bass for its size and wide, consistent dispersion. The catch: Very bright treble, running 3-6dB above the midrange depending on measurement angle: independently corroborated by other owners online, not just one reviewer’s opinion.
Buy the AsciLab C6B. It is rated higher for sound quality than the Sonus Faber Lumina II Amator and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Passive Home rankings cover every ranked option.
Bookshelf speakers with very accurate sound and an unusually wide, stable soundstage, for any seating position.
A luxurious Italian bookshelf speaker with a gorgeous cabinet, solid bass for its size and wide, consistent dispersion.
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Specifications Side By Side
| AsciLab C6B | Sonus Faber Lumina II Amator | |
|---|---|---|
| Price | $1145 per pair | $2000 per pair |
| Ranked | #6 of 222 in Large Size Bookshelf Speakers | #188 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 35Hz (measured, Erin’s Audio Corner) | 43Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 54Hz (measured, Erin’s Audio Corner) | 63Hz (measured, Erin’s Audio Corner) |
| Dimensions | 15.7”H x 8”W x 10.4”D (398.8 x 203.2 x 264.2 mm) | 12” x 7.1” x 10.4” (304 x 180 x 263 mm) |
| Impedance | 4 ohms nominal, 2.6 ohms minimum (measured, Erin’s Audio Corner) | 4 ohms nominal, 3.9 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85.6dB (measured, Erin’s Audio Corner) | 86.9dB (2.83V/1m, measured by Erin’s Audio Corner) |
| Drivers | 6” Aluminium Ceramic Cone with cast Aluminium Chassis woofer, 1” Aluminium Ceramic Dome tweeter | 1.14” DAD (Damped Apex Dome) tweeter, 5.9” paper cone woofer |
| Weight | 18.5 lbs (8.4 kg) each | 12.8 lbs (5.8 kg) |
| Woofer Cabinet | passive radiator | Bass reflex, ported |
| Spinorama Preference Score | 6.33 | - |
| Spinorama Preference Score with Perfect Sub | 8.28 | - |
| DIY Kit | No | No |
| Frequency Response | - | 55Hz - 24kHz (Manufacturer specified) |
| Crossover Frequency | - | 2600Hz |
| Recommended Power | - | 30W - 150W |
| Country | - | Italy (Vicenza) |
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