Short answer: the KEF R3 Meta. It ranks #10 of 222 bookshelf speakers by sound quality (rated 4.6/5); the Mission LX-3 MKII ranks #138 (rated 3.6/5).
The KEF R3 Meta is the more accurate pick. A three way bookshelf speaker with KEF’s coaxial driver, superb accuracy that holds across the room, and bass that reaches deep for its size. Its measured preference score, a predictor of how neutral it sounds, is 6.10 against 4.17 for the Mission LX-3 MKII. Watch for: Pointed straight on-axis, there’s a 1-2dB bump around 9kHz that stays consistent across angles thanks to the constant-directivity waveguide: only toeing the speaker out about 10° tames it.
The Mission LX-3 MKII is the deeper-bass option. 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 76Hz for the KEF R3 Meta. The catch: 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 KEF R3 Meta. It is rated higher for sound quality than the Mission LX-3 MKII.
Want more options? Browse the full Passive Home rankings.
A three way bookshelf speaker with KEF’s coaxial driver, superb accuracy that holds across the room, and bass that reaches deep for its size.
Large affordable standmount speakers with a 6.5 inch woofer, useful bass and easy to drive sensitivity.
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Specifications Side By Side
| KEF R3 Meta | Mission LX-3 MKII | |
|---|---|---|
| Price | $2,499.99 per pair | £249 per pair |
| Ranked | #10 of 222 in Large Size Bookshelf Speakers | #138 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) | 42.5Hz (derived from ASR on-axis curve, spinorama.org) |
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) | 67.4Hz (measured, ASR via spinorama.org) |
| Dimensions | 16.6”H x 7.9”W x 13.2”D (421.6 x 200.7 x 335.3 mm) | 13.6H x 8.9W x 12.1D in |
| Impedance | 4 ohms nominal (3.2 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 8 ohms nominal, 4.1 ohms minimum |
| Drivers | 6.5” Hybrid aluminum ported woofer, 5” aluminum cone midrange, 1” vented aluminium dome with MAT tweeter | 1” microfiber-dome tweeter, 6.5” composite-fiber woofer |
| Sensitivity | 85.9dB (measured, Erin’s Audio Corner; 87dB manufacturer specified) | 88dB |
| Weight | 27.3 lbs (12.4 kg) each | 18.5 lbs (8.4 kg) each |
| Woofer Cabinet | ported | - |
| Spinorama Preference Score | 6.10 | 4.17 |
| Spinorama Preference Score with Perfect Sub | 7.91 | 6.42 |
| DIY Kit | No | No |
| Enclosure | - | 2-way, bass-reflex |
| Country | - | United Kingdom (design) |
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