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Front view — side by side at true scale
ACastle Knight 1BCanton Vento 21
Castle Knight 1vsCanton Vento 21
The Canton Vento 21 stands 30.0 cm tall — about 1.0 cm more than the Castle Knight 1 at 29.0 cm. On footprint the Castle Knight 1 is the wider cabinet (16.5 cm versus 15.1 cm). The Canton Vento 21 reaches deeper in the bass, down to 32 Hz versus 46 Hz. Low frequencies come from a 130 mm cone on the Castle Knight 1 and a 154 mm cone on the Canton Vento 21.
| A | B | |
|---|---|---|
| Manufacturer | Castle | Canton |
| Model | Knight 1 | Vento 21 |
| HiFi ladder position | #35 of 215 bookshelf | #42 of 215 bookshelf |
| Height | 290 mm | 300 mm |
| Width | 165 mm | 151 mm |
| Depth | 265 mm | 270 mm |
| Weight | 4.5 kg | 6.2 kg |
| Enclosure | bass-reflex-rear | bass-reflex-rear |
| Drivers | 1× 130 mm mid-bass, 1× 25 mm tweeter (soft dome) | 1× 25 mm tweeter (Black Ceramic dome), 1× 154 mm mid-bass (ATB cone) |
| Frequency — low | 46 Hz | 32 Hz |
| Frequency — high | 24000 Hz | 40000 Hz |
| Sensitivity | 88 dB | — |
| Impedance | 8 Ω | 4 Ω |
| Recommended amp | 15–100 W | — |
| MAP (USD) | $380 / pair | — |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | castle.uk.com ↗ | canton.de ↗ |
| 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.

