ELAC A4.2 vs MartinLogan Motion AFX
The ELAC A4.2 is an easier load for a receiver (6 Ω vs 4 Ω) and costs less ($399 vs $600). The MartinLogan Motion AFX is more sensitive (87 dB vs 85 dB), so it plays louder per watt and plays lower (90 Hz vs 180 Hz).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| A4.2 | Motion AFX | |
|---|---|---|
| Receivers and amps that drive it | 27 of 29 | 27 of 29, 13 after a setting change |
Specs side by side
Values that differ are bold. A dash means that model doesn't publish the spec.
| A4.2 | Motion AFX | |
|---|---|---|
| Impedance | 6 Ω | 4 Ω |
| Sensitivity | 85 dB (2.83 V, 1 m) | 87 dB (2.83 V, 1 m) |
| Low end | 180 Hz | 90 Hz |
| Drivers | 1 × 13 mm, 1 × 102 mm | 1 × 19 mm, 1 × 133 mm |
| Size | 7×5×9 in | 8×7×10 in |
| Recommended amplifier power | 20–80 W | 20–200 W |
| Weight | 2.5 kg (5.5 lb) | 3.6 kg (7.9 lb) |
| MSRP | $399 a pair (MSRP, September 2026) | $600 a pair (MSRP, September 2026) |
Every spec and pairing: ELAC A4.2, MartinLogan Motion AFX.
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References
- ELAC A4.2: Manufacturer product page, elac-america.myshopify.com, retrieved September 15, 2026
- ELAC A4.2: Retailer listing, amazon.com, retrieved September 15, 2026
- MartinLogan Motion AFX: Spec sheet, martinlogan.com, retrieved September 15, 2026
- MartinLogan Motion AFX: Retailer listing, audioadvice.com, retrieved September 15, 2026
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