Front view — side by side at true scale
ATriangle Duetto 40thBQ Acoustics Concept 300
| A | B | |
|---|---|---|
| Manufacturer | Triangle | Q Acoustics |
| Model | Triangle Duetto 40th | Q Acoustics Concept 300 |
| Height | 460 mm | 355 mm |
| Width | 242 mm | 200 mm |
| Depth | 350 mm | 400 mm |
| Weight | 16.8 kg | 14.5 kg |
| Enclosure | bass-reflex-front | bass-reflex-rear |
| Drivers | 1× 25 mm tweeter (magnesium-dome compression diaphragm), 1× 165 mm mid-bass (natural cellulose-pulp paper cone) | 1× 28 mm tweeter (soft dome), 1× 165 mm mid-bass (coated paper cone) |
| Frequency — low | 40 Hz | 55 Hz |
| Frequency — high | 30000 Hz | 30000 Hz |
| Sensitivity | 88 dB | 84 dB |
| Impedance | 8 Ω | 6 Ω |
| Recommended amp | 30–200 W | 25–200 W |
| MAP (USD) | $6,500 / pair | $6,399 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | trianglehifi.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.

