MartinLogan Motion AFX vs Monitor Audio Bronze AMS 7G
The MartinLogan Motion AFX is more sensitive (87 dB vs 86 dB), so it plays louder per watt and costs less ($600 vs $779). The Monitor Audio Bronze AMS 7G plays lower (83 Hz vs 90 Hz) and is an easier load for a receiver (8 Ω vs 4 Ω).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| Motion AFX | Bronze AMS 7G | |
|---|---|---|
| Receivers and amps that drive it | 27 of 29, 13 after a setting change | 27 of 29 |
Specs side by side
Values that differ are bold. A dash means that model doesn't publish the spec.
| Motion AFX | Bronze AMS 7G | |
|---|---|---|
| Impedance | 4 Ω | 8 Ω |
| Sensitivity | 87 dB (2.83 V, 1 m) | 86 dB (2.83 V, 1 m) |
| Low end | 90 Hz | 83 Hz |
| Drivers | 1 × 19 mm, 1 × 133 mm | 1 × 25 mm, 1 × 102 mm |
| Size | 8×7×10 in | 7×7×12 in |
| Recommended amplifier power | 20–200 W | 10–60 W |
| Weight | 3.6 kg (7.9 lb) | 3.1 kg (6.8 lb) |
| MSRP | $600 a pair (MSRP, September 2026) | $779 a pair (MSRP, September 2026) |
Every spec and pairing: MartinLogan Motion AFX, Monitor Audio Bronze AMS 7G.
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References
- MartinLogan Motion AFX: Spec sheet, martinlogan.com, retrieved September 15, 2026
- MartinLogan Motion AFX: Retailer listing, audioadvice.com, retrieved September 15, 2026
- Monitor Audio Bronze AMS 7G: Manufacturer product page, monitoraudio.com, retrieved September 15, 2026
- Monitor Audio Bronze AMS 7G: Retailer listing, upscaleaudio.com, retrieved September 15, 2026
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