Front view — side by side at true scale
AQuad S-2BCastle Avon 1
Click either cabinet to swap A ↔ B · Reference height: 330 mm (33.0 cm) · 1 mm = 1.70 px
| A | B | |
|---|---|---|
| Manufacturer | Quad | Castle |
| Model | Quad S-2 | Castle Avon 1 |
| Height | 330 mm | 320 mm |
| Width | 180 mm | 180 mm |
| Depth | 260 mm | 260 mm |
| Weight | 6.1 kg | 5.8 kg |
| Enclosure | bass-reflex-rear | transmission-line |
| Drivers | 1× tweeter (ribbon), 1× 125 mm mid-bass (woven Kevlar cone) | 1× 130 mm mid-bass, 1× tweeter (ribbon) |
| Frequency — low | 48 Hz | 60 Hz |
| Frequency — high | 22000 Hz | 20000 Hz |
| Sensitivity | 87 dB | 87 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 25–150 W | 25–100 W |
| MAP (USD) | $999 / pair | — |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | quad-hifi.co.uk ↗ | castle.uk.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.