Front view — side by side at true scale
AFyne Audio F303iBCastle Knight 4
Click either cabinet to swap A ↔ B · Reference height: 962 mm (96.2 cm) · 1 mm = 0.58 px
| A | B | |
|---|---|---|
| Manufacturer | Fyne Audio | Castle |
| Model | Fyne Audio F303i | Castle Knight 4 |
| Height | 962 mm | 900 mm |
| Width | 233 mm | 165 mm |
| Depth | 308 mm | 270 mm |
| Weight | 14.6 kg | 12.5 kg |
| Enclosure | bass-reflex-rear | transmission-line |
| Drivers | 1× 25 mm tweeter (titanium dome), 2× 150 mm mid-bass (multi-fibre cone) | 2× 130 mm mid-bass, 1× 25 mm tweeter (soft dome) |
| Frequency — low | 32 Hz | 36 Hz |
| Frequency — high | 34000 Hz | 24000 Hz |
| Sensitivity | 91 dB | 90 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 30–120 W | 25–150 W |
| MAP (USD) | $1,016 / pair | $1,020 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | fyneaudio.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.