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References
Front view — side by side at true scale
AELAC Concentro S 503.2BTriangle Duetto 40th
| A | B | |
|---|---|---|
| Manufacturer | ELAC | Triangle |
| Model | ELAC Concentro S 503.2 2.0 | Triangle Duetto 40th |
| Height | 400 mm | 460 mm |
| Width | 219 mm | 242 mm |
| Depth | 372 mm | 350 mm |
| Weight | 13.4 kg | 16.8 kg |
| Enclosure | bass-reflex-rear | bass-reflex-front |
| Drivers | 1× tweeter (JET 6 pleated-folded ribbon), 1× 130 mm midrange (aluminium AS-XR cone), 1× 180 mm woofer (aluminium AS-XR cone) | 1× 25 mm tweeter (magnesium-dome compression diaphragm), 1× 165 mm mid-bass (natural cellulose-pulp paper cone) |
| Frequency — low | 40 Hz | 40 Hz |
| Frequency — high | 40000 Hz | 30000 Hz |
| Sensitivity | 87 dB | 88 dB |
| Impedance | 4 Ω | 8 Ω |
| Recommended amp | 60–500 W | 30–200 W |
| MAP (USD) | $7,398 / pair | $6,500 / pair |
| Brand website | elac.com ↗ | trianglehifi.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.

