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Compare speakers at true scale
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References
Front view — side by side at true scale
AFyne Audio F5SBCastle Richmond IV
Fyne Audio F5SvsCastle Richmond IV
The Castle Richmond IV stands 30.5 cm tall — about 2.0 cm more than the Fyne Audio F5S at 28.5 cm. On footprint the Castle Richmond IV is the wider cabinet (19.0 cm versus 17.4 cm). The Fyne Audio F5S reaches deeper in the bass, down to 55 Hz versus 58 Hz. Low frequencies come from a 125 mm cone on the Fyne Audio F5S and a 150 mm cone on the Castle Richmond IV. Both land in a similar price bracket, around $761 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Fyne Audio | Castle |
| Model | Fyne Audio F5S | Castle Richmond IV |
| Height | 285 mm | 305 mm |
| Width | 174 mm | 190 mm |
| Depth | 249 mm | 262 mm |
| Weight | 4.5 kg | 6.3 kg |
| Enclosure | bass-reflex-down | bass-reflex-rear |
| Drivers | 1× 19 mm tweeter (magnesium dome), 1× 125 mm mid-bass (multi-fibre cone) | 1× 150 mm mid-bass, 1× 32 mm tweeter (soft dome) |
| Frequency — low | 55 Hz | 58 Hz |
| Frequency — high | 38000 Hz | 22000 Hz |
| Sensitivity | 87 dB | 87 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 30–90 W | 25–100 W |
| MAP (USD) | $762 / pair | $760 / 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.

