Front view — side by side at true scale
ACastle Windsor EarlBSonus Faber Concertino G4
Click either cabinet to swap A ↔ B · Reference height: 430 mm (43.0 cm) · 1 mm = 1.30 px
| A | B | |
|---|---|---|
| Manufacturer | Castle | Sonus Faber |
| Model | Castle Windsor Earl | Sonus Faber Concertino G4 G4 |
| Height | 430 mm | 314 mm |
| Width | 240 mm | 212 mm |
| Depth | 296 mm | 297 mm |
| Weight | 9.5 kg | 6.6 kg |
| Enclosure | bass-reflex-rear | bass-reflex-rear |
| Drivers | 1× 165 mm mid-bass (woven polypropylene), 1× 28 mm tweeter (micro-fibre dome) | 1× 28 mm tweeter (DAD Arrow Point soft dome), 1× 134 mm mid-bass (paper cone) |
| Frequency — low | 58 Hz | 60 Hz |
| Frequency — high | 22000 Hz | 25000 Hz |
| Sensitivity | 89 dB | 85 dB |
| Impedance | 8 Ω | 4 Ω |
| Recommended amp | 25–100 W | 30–150 W |
| MAP (USD) | $4,930 / pair | $5,000 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | castle.uk.com ↗ | sonusfaber.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.