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: 470 mm (47.0 cm) · 1 mm = 1.19 px
Canton Reference 9vsCastle Windsor Duke
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 174 mm cone on the Canton Reference 9 and a 200 mm cone on the Castle Windsor Duke. Both land in a similar price bracket, around $5,780 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Canton | Castle |
| Model | Canton Reference 9 | Castle Windsor Duke |
| Height | 460 mm | 470 mm |
| Width | 244 mm | 280 mm |
| Depth | 390 mm | 346 mm |
| Weight | 18 kg | 13.5 kg |
| Enclosure | bass-reflex-down | bass-reflex-rear |
| Drivers | 1× 25 mm tweeter (aluminium-oxide ceramic dome), 1× 174 mm mid-bass (Black Ceramic Tungsten cone) | 1× 200 mm mid-bass (woven polypropylene), 1× 28 mm tweeter (micro-fibre dome) |
| Frequency — low | 25 Hz | 52 Hz |
| Frequency — high | 40000 Hz | 22000 Hz |
| Sensitivity | 87 dB | 90 dB |
| Impedance | 4 Ω | 8 Ω |
| Recommended amp | — | 30–150 W |
| MAP (USD) | $5,800 / pair | $5,760 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | canton.de ↗ | 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.