TrueScaleAudio
Compare speakers at true scale
Pick two speakers and see them side by side at their real-world size.
Front view — side by side at true scale
Click either cabinet to swap A ↔ B · Reference height: 16.9 in · 1 in = 33.08 px
Castle Windsor EarlvsSonus Faber Concertino G4
The Castle Windsor Earl stands 43.0 cm tall — about 11.6 cm more than the Sonus Faber Concertino G4 at 31.4 cm. On footprint the Castle Windsor Earl is the wider cabinet (24.0 cm versus 21.2 cm). At 89 dB against 85 dB, the Castle Windsor Earl is the easier load to drive and plays louder from the same amplifier. The Castle Windsor Earl reaches deeper in the bass, down to 58 Hz versus 60 Hz. Low frequencies come from a 165 mm cone on the Castle Windsor Earl and a 134 mm cone on the Sonus Faber Concertino G4. Both land in a similar price bracket, around $4,965 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Castle | Sonus Faber |
| Model | Castle Windsor Earl | Sonus Faber Concertino G4 G4 |
| Height | 16.9 in | 12.4 in |
| Width | 9.4 in | 8.3 in |
| Depth | 11.7 in | 11.7 in |
| Weight | 20.9 lb | 14.6 lb |
| Enclosure | bass-reflex-rear | bass-reflex-rear |
| Drivers | 1× 6.5 in mid-bass (woven polypropylene), 1× 1.1 in tweeter (micro-fibre dome) | 1× 1.1 in tweeter (DAD Arrow Point soft dome), 1× 5.3 in 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.