Front view — side by side at true scale
AELAC UniFi UB52BCastle Richmond IV
Click either cabinet to swap A ↔ B · Reference height: 346 mm (34.6 cm) · 1 mm = 1.62 px
| A | B | |
|---|---|---|
| Manufacturer | ELAC | Castle |
| Model | ELAC UniFi UB52 2.0 | Castle Richmond IV |
| Height | 346 mm | 305 mm |
| Width | 185 mm | 190 mm |
| Depth | 275 mm | 262 mm |
| Weight | 8.5 kg | 6.3 kg |
| Enclosure | bass-reflex-front | bass-reflex-rear |
| Drivers | 1× 25 mm tweeter (soft dome), 1× 102 mm midrange (aluminium cone), 1× 133 mm woofer (aluminium cone) | 1× 150 mm mid-bass, 1× 32 mm tweeter (soft dome) |
| Frequency — low | 46 Hz | 58 Hz |
| Frequency — high | 35000 Hz | 22000 Hz |
| Sensitivity | 85 dB | 87 dB |
| Impedance | 6 Ω | 8 Ω |
| Recommended amp | — | 25–100 W |
| MAP (USD) | $799 / pair | $760 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | elac.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.