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Compare technical specifications (up to 4 speakers).
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References
Front view — overlaid at true scale
AQ Acoustics 5040BQuad S-5
| A | B | |
|---|---|---|
| Manufacturer | Q Acoustics | Quad |
| Model | Q Acoustics 5040 | Quad S-5 |
| Height | 967 mm | 1070 mm |
| Width | 344 mm | 205 mm |
| Depth | 293 mm | 330 mm |
| Weight | 18 kg | 25.3 kg |
| Enclosure | bass-reflex-rear | passive-radiator |
| Drivers | 1× 25 mm tweeter (soft dome), 2× 125 mm mid-bass (C³ continuous curved cone) | 1× tweeter (ribbon), 1× 100 mm midrange (woven Kevlar cone), 2× 165 mm woofer (woven Kevlar cone) |
| Frequency — low | 39 Hz | 42 Hz |
| Frequency — high | 30000 Hz | 23000 Hz |
| Sensitivity | 91.5 dB | 90 dB |
| Impedance | 6 Ω | 6 Ω |
| Recommended amp | 25–150 W | 40–200 W |
| MAP (USD) | $1,999 / pair | $1,999 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | qacoustics.com ↗ | quad-hifi.co.uk ↗ |
| 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.

