Short answer: the AsciLab F6Bs. It ranks #20 of 222 bookshelf speakers by sound quality (rated 4.5/5); the Mission LX-3 MKII ranks #138 (rated 3.6/5).
The AsciLab F6Bs is the more accurate pick. 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 4.17 for the Mission LX-3 MKII. Watch for: AsciLab’s own site shows the F6Bs sold out, though it remains in stock through resellers like Audiophonics and Tested Audio.
The Mission LX-3 MKII is the deeper-bass pick. Large affordable standmount speakers with a 6.5 inch woofer, useful bass and easy to drive sensitivity. Its bass reaches about 67.4Hz before falling 3dB, against 82Hz for the AsciLab F6Bs. The tradeoff: On-axis smoothness of 0.217 and predicted in-room smoothness of 0.344 reveal clear response unevenness, with a -0.46dB-per-octave downward tilt.
Buy the AsciLab F6Bs. It is rated higher for sound quality than the Mission LX-3 MKII.
Still deciding? The full Passive Home rankings cover every ranked option.
A slim, sealed bookshelf speaker that mounts flat on a wall bracket, with accurate sound and wide, even dispersion for a great price.
Large affordable standmount speakers with a 6.5 inch woofer, useful bass and easy to drive sensitivity.
Prices on this page were last checked October 31, 2026 at 7:11 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| AsciLab F6Bs | Mission LX-3 MKII | |
|---|---|---|
| Price | €799 per pair | £249 per pair |
| Ranked | #20 of 222 in Large Size Bookshelf Speakers | #138 of 222 in Large Size Bookshelf Speakers |
| Enclosure | sealed | 2-way, bass-reflex |
| Drivers | 1” aluminum dome tweeter with waveguide and phase plug, 6” fiber cone woofer | 1” microfiber-dome tweeter, 6.5” composite-fiber woofer |
| Dimensions | 14.5”H x 8”W x 6.1”D (368 x 203 x 154 mm) | 13.6H x 8.9W x 12.1D in |
| Weight | 12.3 lbs (5.6 kg) each | 18.5 lbs (8.4 kg) each |
| Sensitivity | 85.2dB @ 2.83V/1m (measured, Audio Science Review) | 88dB |
| Impedance | 4 ohms nominal, 3.7 ohms minimum | 8 ohms nominal, 4.1 ohms minimum |
| Bass Extension (-3dB) | 82.0Hz (measured, Audio Science Review) | 67.4Hz (measured, ASR via spinorama.org) |
| Bass Extension (-10dB) | 50.1Hz (measured, Audio Science Review) | 42.5Hz (derived from ASR on-axis curve, spinorama.org) |
| Crossover Frequency | 1kHz | - |
| Mounting | VESA 100 wall mount compatible | - |
| Warranty | 2 years | - |
| Country | South Korea | United Kingdom (design) |
| Maximum SPL | 100dB full bandwidth, 102dB above 100Hz (manufacturer specified) | - |
| Spinorama Preference Score | 5.24 | 4.17 |
| Spinorama Preference Score with Perfect Sub | 7.90 | 6.42 |
| DIY Kit | No | No |
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