| Quad S-4 | |
|---|---|
| Manufacturer | Quad |
| Model | Quad S-4 |
| Type | Floorstander |
| Power | Passive |
| Height | 34.3 in |
| Width | 7.1 in |
| Depth | 11.8 in |
| Weight | 45.2 lb |
| Enclosure | passive-radiator |
| Drivers | 1× tweeter (ribbon), 1× 3.9 in midrange (woven Kevlar cone), 2× 4.9 in woofer (woven Kevlar cone) |
| Frequency response | 44–23000 Hz |
| Sensitivity | 88 dB |
| Impedance | 6 Ω (min 3.5 Ω) |
| Recommended amp | 40–200 W |
| MAP (USD) | $1,499 / pair |
| Where to buy | Check availability ↗ |
| Brand website | quad-hifi.co.uk ↗ |
| Product page | Open product page ↗ |