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Compare speakers at true scale
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References
Front view — side by side at true scale
AQuad S-1BSonus Faber Lumina I
Quad S-1vsSonus Faber Lumina I
The Quad S-1 and the Sonus Faber Lumina I stand at nearly the same height, around 28.5 cm tall. The Quad S-1 reaches deeper in the bass, down to 58 Hz versus 65 Hz. Low frequencies come from a 100 mm cone on the Quad S-1 and a 120 mm cone on the Sonus Faber Lumina I. On price, the Sonus Faber Lumina I sits higher — about $999 a pair against $799 for the Quad S-1.
| A | B | |
|---|---|---|
| Manufacturer | Quad | Sonus Faber |
| Model | S-1 | Lumina I |
| HiFi ladder position | #33 of 215 bookshelf | #25 of 215 bookshelf |
| Height | 11.2 in | 11 in |
| Width | 6.1 in | 5.8 in |
| Depth | 9.4 in | 8.4 in |
| Weight | 11.5 lb | 9.7 lb |
| Enclosure | bass-reflex-rear | bass-reflex-front |
| Drivers | 1× tweeter (ribbon), 1× 3.9 in mid-bass (woven Kevlar cone) | 1× 1.1 in tweeter (DAD soft dome), 1× 4.7 in mid-bass (paper cone) |
| Frequency — low | 58 Hz | 65 Hz |
| Frequency — high | 20000 Hz | 24000 Hz |
| Sensitivity | 84 dB | 84 dB |
| Impedance | 8 Ω | 4 Ω |
| Recommended amp | 25–150 W | 30–100 W |
| MAP (USD) | $799 / pair | $999 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | quad-hifi.co.uk ↗ | sonusfaber.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.

