Front view — side by side at true scale
AJamo C605 MKIIBCastle Avon 4
| A | B | |
|---|---|---|
| Manufacturer | Jamo | Castle |
| Model | Jamo C605 MKII MKII | Castle Avon 4 |
| Height | 862 mm | 955 mm |
| Width | 208 mm | 180 mm |
| Depth | 341 mm | 310 mm |
| Weight | 17.5 kg | 17.6 kg |
| Enclosure | bass-reflex | transmission-line |
| Drivers | 1× 25.4 mm tweeter (positive soft dome), 1× 135 mm midrange (Hybrid Composition Conical Cone (HCCC)), 1× 135 mm woofer (Hybrid Composition Conical Cone (HCCC)) | 1× 130 mm woofer, 1× 115 mm midrange, 1× tweeter (ribbon) |
| Frequency — low | 45 Hz | 45 Hz |
| Frequency — high | 20000 Hz | 20000 Hz |
| Sensitivity | 89 dB | 89 dB |
| Impedance | 6 Ω | 8 Ω |
| Recommended amp | 140 W | 25–100 W |
| MAP (USD) | $999 / pair | — |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | jamo.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.

