KEF Q Concerto Meta vs MartinLogan Motion XT B100
The MartinLogan Motion XT B100 is more sensitive (93 dB vs 85 dB), so it plays louder per watt, plays lower (45 Hz vs 48 Hz) and costs less ($850 vs $1,400).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| Q Concerto Meta | Motion XT B100 | |
|---|---|---|
| Receivers and amps that drive it | 28 of 29, 14 after a setting change | 28 of 29, 14 after a setting change |
Specs side by side
Values that differ are bold. A dash means that model doesn't publish the spec.
| Q Concerto Meta | Motion XT B100 | |
|---|---|---|
| Impedance | 4 Ω | 4 Ω |
| Sensitivity | 85 dB (2.83 V, 1 m) | 93 dB |
| Low end | 48 Hz | 45 Hz |
| Drivers | 1 × 19 mm, 1 × 100 mm, 1 × 165 mm | 1 × 32 mm, 1 × 165 mm |
| Size | 8×16×12 in | 8×14×13 in |
| Recommended amplifier power | 15–180 W | 20–250 W |
| Weight | 9.5 kg (20.9 lb) | 9.3 kg (20.5 lb) |
| MSRP | $1,400 a pair (MSRP, September 2026) | $850 each (MSRP, September 2026) |
Every spec and pairing: KEF Q Concerto Meta, MartinLogan Motion XT B100.
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References
- KEF Q Concerto Meta: Spec sheet, assets.kef.com, retrieved September 15, 2026
- KEF Q Concerto Meta: Manufacturer product page, us.kef.com, retrieved September 15, 2026
- MartinLogan Motion XT B100: Spec sheet, martinlogan.com, retrieved September 15, 2026
- MartinLogan Motion XT B100: Retailer listing, audioadvice.com, retrieved September 15, 2026
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