TrueScaleAudio
Compare speakers at true scale
Pick two speakers and see them side by side at their real-world size.
Front view — side by side at true scale
Click either cabinet to swap A ↔ B · Reference height: 13.0 in · 1 in = 43.10 px
Sonus Faber Lumina IvsQuad S-2
The Quad S-2 stands 33.0 cm tall — about 5.0 cm more than the Sonus Faber Lumina I at 28.0 cm. On footprint the Quad S-2 is the wider cabinet (18.0 cm versus 14.8 cm). At 87 dB against 84 dB, the Quad S-2 is the easier load to drive and plays louder from the same amplifier. The Quad S-2 reaches deeper in the bass, down to 48 Hz versus 65 Hz. The Sonus Faber Lumina I is front-ported and the Quad S-2 is rear-ported. Both land in a similar price bracket, around $999 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Sonus Faber | Quad |
| Model | Lumina I | S-2 |
| HiFi ladder position | #25 of 215 bookshelf | #77 of 215 bookshelf |
| Height | 11 in | 13 in |
| Width | 5.8 in | 7.1 in |
| Depth | 8.4 in | 10.2 in |
| Weight | 9.7 lb | 13.4 lb |
| Enclosure | bass-reflex-front | bass-reflex-rear |
| Drivers | 1× 1.1 in tweeter (DAD soft dome), 1× 4.7 in mid-bass (paper cone) | 1× tweeter (ribbon), 1× 4.9 in mid-bass (woven Kevlar cone) |
| Frequency — low | 65 Hz | 48 Hz |
| Frequency — high | 24000 Hz | 22000 Hz |
| Sensitivity | 84 dB | 87 dB |
| Impedance | 4 Ω | 8 Ω |
| Recommended amp | 30–100 W | 25–150 W |
| MAP (USD) | $999 / pair | $999 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | sonusfaber.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.