Front view — side by side at true scale
ACastle Knight 3BCastle Knight 4
Click either cabinet to swap A ↔ B · Reference height: 900 mm (90.0 cm) · 1 mm = 0.62 px
| A | B | |
|---|---|---|
| Manufacturer | Castle | Castle |
| Model | Castle Knight 3 | Castle Knight 4 |
| Height | 820 mm | 900 mm |
| Width | 165 mm | 165 mm |
| Depth | 265 mm | 270 mm |
| Weight | 10.7 kg | 12.5 kg |
| Enclosure | transmission-line | transmission-line |
| Drivers | 1× 130 mm mid-bass, 1× 25 mm tweeter (soft dome) | 2× 130 mm mid-bass, 1× 25 mm tweeter (soft dome) |
| Frequency — low | 38 Hz | 36 Hz |
| Frequency — high | 24000 Hz | 24000 Hz |
| Sensitivity | 88 dB | 90 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 15–100 W | 25–150 W |
| MAP (USD) | $770 / pair | $1,020 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | castle.uk.com ↗ | 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.