Front view — side by side at true scale
AMartinLogan Motion F20BQ Acoustics Concept 50
Click either cabinet to swap A ↔ B · Reference height: 1127 mm (112.7 cm) · 1 mm = 0.50 px
| A | B | |
|---|---|---|
| Manufacturer | MartinLogan | Q Acoustics |
| Model | MartinLogan Motion F20 | Q Acoustics Concept 50 |
| Height | 1127 mm | 1027 mm |
| Width | 298 mm | 396 mm |
| Depth | 362 mm | 321 mm |
| Weight | 27.2 kg | 22.9 kg |
| Enclosure | bass-reflex-down | bass-reflex-rear |
| Drivers | 1× tweeter (Folded Motion (AMT)), 1× 140 mm midrange (woven-fibreglass cone), 2× 165 mm woofer (aluminium cone) | 1× 25 mm tweeter (soft dome), 2× 125 mm mid-bass (coated paper cone) |
| Frequency — low | 35 Hz | 42 Hz |
| Frequency — high | 25000 Hz | 30000 Hz |
| Sensitivity | 92 dB | 90.5 dB |
| Impedance | 4 Ω | 6 Ω |
| Recommended amp | 20–300 W | 25–150 W |
| MAP (USD) | $3,500 / pair | $3,899 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | martinlogan.com ↗ | qacoustics.com ↗ |
| Product page | Open product page ↗ | Open product page ↗ |
Larger value highlighted in green. For low-frequency extension, lower Hz = greater bass reach, so the deeper side is highlighted.