KEF Q250c vs MartinLogan Motion XT C100
The KEF Q250c is an easier load for a receiver (8 Ω vs 5 Ω) and costs less ($600 vs $1,600). The MartinLogan Motion XT C100 is more sensitive (93 dB vs 87 dB), so it plays louder per watt and plays lower (42 Hz vs 68 Hz).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| Q250c | Motion XT C100 | |
|---|---|---|
| Receivers and amps that drive it | 29 of 29 | 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.
| Q250c | Motion XT C100 | |
|---|---|---|
| Impedance | 8 Ω | 5 Ω |
| Sensitivity | 87 dB (2.83 V, 1 m) | 93 dB |
| Low end | 68 Hz | 42 Hz |
| Drivers | 1 × 25 mm, 1 × 130 mm, 2 × 130 mm | 1 × 32 mm, 2 × 165 mm |
| Size | 21×7×8 in | 24×8×14 in |
| Recommended amplifier power | 10–100 W | 20–300 W |
| Weight | 7.5 kg (16.5 lb) | 15.4 kg (34 lb) |
| MSRP | $600 each (MSRP, October 2025) | $1,600 each (MSRP, September 2026) |
Every spec and pairing: KEF Q250c, MartinLogan Motion XT C100.
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References
- KEF Q250c: Manufacturer product page, web.archive.org, retrieved September 15, 2026
- KEF Q250c: Manufacturer product page, international.kef.com, retrieved September 15, 2026
- MartinLogan Motion XT C100: Spec sheet, martinlogan.com, retrieved September 15, 2026
- MartinLogan Motion XT C100: Retailer listing, audioadvice.com, retrieved September 15, 2026
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