Front view — side by side at true scale
ACastle Richmond IVBELAC UniFi UB52
Click either cabinet to swap A ↔ B · Reference height: 346 mm (34.6 cm) · 1 mm = 1.62 px
| A | B | |
|---|---|---|
| Manufacturer | Castle | ELAC |
| Model | Castle Richmond IV | ELAC UniFi UB52 2.0 |
| Height | 305 mm | 346 mm |
| Width | 190 mm | 185 mm |
| Depth | 262 mm | 275 mm |
| Weight | 6.3 kg | 8.5 kg |
| Enclosure | bass-reflex-rear | bass-reflex-front |
| Drivers | 1× 150 mm mid-bass, 1× 32 mm tweeter (soft dome) | 1× 25 mm tweeter (soft dome), 1× 102 mm midrange (aluminium cone), 1× 133 mm woofer (aluminium cone) |
| Frequency — low | 58 Hz | 46 Hz |
| Frequency — high | 22000 Hz | 35000 Hz |
| Sensitivity | 87 dB | 85 dB |
| Impedance | 8 Ω | 6 Ω |
| Recommended amp | 25–100 W | — |
| MAP (USD) | $760 / pair | $799 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | castle.uk.com ↗ | elac.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.