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Compare speakers at true scale
Pick two speakers and see them side by side at their real-world size.
References
Front view — side by side at true scale
ACastle Avon 1BCastle Richmond IV
Castle Avon 1vsCastle Richmond IV
The Castle Avon 1 stands 32.0 cm tall — about 1.5 cm more than the Castle Richmond IV at 30.5 cm. On footprint the Castle Richmond IV is the wider cabinet (19.0 cm versus 18.0 cm). The Castle Richmond IV reaches deeper in the bass, down to 58 Hz versus 60 Hz. Low frequencies come from a 130 mm cone on the Castle Avon 1 and a 150 mm cone on the Castle Richmond IV.
| A | B | |
|---|---|---|
| Manufacturer | Castle | Castle |
| Model | Castle Avon 1 | Castle Richmond IV |
| Height | 320 mm | 305 mm |
| Width | 180 mm | 190 mm |
| Depth | 260 mm | 262 mm |
| Weight | 5.8 kg | 6.3 kg |
| Enclosure | transmission-line | bass-reflex-rear |
| Drivers | 1× 130 mm mid-bass, 1× tweeter (ribbon) | 1× 150 mm mid-bass, 1× 32 mm tweeter (soft dome) |
| Frequency — low | 60 Hz | 58 Hz |
| Frequency — high | 20000 Hz | 22000 Hz |
| Sensitivity | 87 dB | 87 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 25–100 W | 25–100 W |
| MAP (USD) | — | $760 / 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.

