TrueScaleAudio
Compare speakers at true scale
Pick two speakers and see them side by side at their real-world size.
Front view — side by side at true scale
Click either cabinet to swap A ↔ B · Reference height: 18.5 in · 1 in = 30.26 px
Castle Windsor DukevsCanton Reference 9
The Castle Windsor Duke stands 47.0 cm tall — about 1.0 cm more than the Canton Reference 9 at 46.0 cm. On footprint the Castle Windsor Duke is the wider cabinet (28.0 cm versus 24.4 cm). At 90 dB against 87 dB, the Castle Windsor Duke is the easier load to drive and plays louder from the same amplifier. The Canton Reference 9 reaches deeper in the bass, down to 25 Hz versus 52 Hz. Low frequencies come from a 200 mm cone on the Castle Windsor Duke and a 174 mm cone on the Canton Reference 9. Both land in a similar price bracket, around $5,780 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Castle | Canton |
| Model | Castle Windsor Duke | Canton Reference 9 |
| Height | 18.5 in | 18.1 in |
| Width | 11 in | 9.6 in |
| Depth | 13.6 in | 15.4 in |
| Weight | 29.8 lb | 39.7 lb |
| Enclosure | bass-reflex-rear | bass-reflex-down |
| Drivers | 1× 7.9 in mid-bass (woven polypropylene), 1× 1.1 in tweeter (micro-fibre dome) | 1× 1 in tweeter (aluminium-oxide ceramic dome), 1× 6.9 in mid-bass (Black Ceramic Tungsten cone) |
| Frequency — low | 52 Hz | 25 Hz |
| Frequency — high | 22000 Hz | 40000 Hz |
| Sensitivity | 90 dB | 87 dB |
| Impedance | 8 Ω | 4 Ω |
| Recommended amp | 30–150 W | — |
| MAP (USD) | $5,760 / pair | $5,800 / 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.