Short answer: the AsciLab F6Bs. It ranks #20 of 222 bookshelf speakers by sound quality (rated 4.5/5); the KEF Q3 Meta ranks #156 (rated 3.4/5).
The KEF Q3 Meta is the deeper-bass choice. Coaxial bookshelf speakers with very wide dispersion, punchy kick drums and bass tuning that works close to a wall. Its bass reaches about 52Hz before falling 3dB, against 82Hz for the AsciLab F6Bs. The catch: Not well suited to high-output use: compression and strain in the 1-2kHz region emerge above about 90dB at 10 feet, so a high-output home theater setup isn’t the best application.
The AsciLab F6Bs is the more accurate option. A slim, sealed bookshelf speaker that mounts flat on a wall bracket, with accurate sound and wide, even dispersion for a great price. Its measured preference score, a predictor of how neutral it sounds, is 5.24 against 4.66 for the KEF Q3 Meta. Watch for: AsciLab’s own site shows the F6Bs sold out, though it remains in stock through resellers like Audiophonics and Tested Audio.
Buy the AsciLab F6Bs. It is rated higher for sound quality than the KEF Q3 Meta.
Want more options? Browse the full Passive Home rankings.
Coaxial bookshelf speakers with very wide dispersion, punchy kick drums and bass tuning that works close to a wall.
A slim, sealed bookshelf speaker that mounts flat on a wall bracket, with accurate sound and wide, even dispersion for a great price.
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Specifications Side By Side
| KEF Q3 Meta | AsciLab F6Bs | |
|---|---|---|
| Price | $764.97 per pair | €799 per pair |
| Ranked | #156 of 222 in Large Size Bookshelf Speakers | #20 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) | 50.1Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 52Hz (measured, Erin’s Audio Corner) | 82.0Hz (measured, Audio Science Review) |
| Impedance | 4 ohms nominal, 3.7 ohms minimum (measured above 80Hz, Erin’s Audio Corner) | 4 ohms nominal, 3.7 ohms minimum |
| Sensitivity | 84.5dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner; 87dB manufacturer specified) | 85.2dB @ 2.83V/1m (measured, Audio Science Review) |
| Drivers | 165 mm (6.5 in.) aluminium cone woofer, 25 mm (1 in.) vented aluminium dome with MAT tweeter | 1” aluminum dome tweeter with waveguide and phase plug, 6” fiber cone woofer |
| Woofer Cabinet | ported, rear | - |
| Weight | 15.9 lbs (7.2 kg) | 12.3 lbs (5.6 kg) each |
| Dimensions | 14.1”H x 8.3”W x 12”D (357.0 x 210.0 x 305.0 mm) | 14.5”H x 8”W x 6.1”D (368 x 203 x 154 mm) |
| Spinorama Preference Score | 4.66 | 5.24 |
| Spinorama Preference Score with Perfect Sub | 6.50 | 7.90 |
| DIY Kit | No | No |
| Enclosure | - | sealed |
| Crossover Frequency | - | 1kHz |
| Mounting | - | VESA 100 wall mount compatible |
| Warranty | - | 2 years |
| Country | - | South Korea |
| Maximum SPL | - | 100dB full bandwidth, 102dB above 100Hz (manufacturer specified) |
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