TrueScaleAudio
Compare speakers at true scale
Pick two speakers and see them side by side at their real-world size.
Front view — overlaid at true scale
Click either cabinet to swap A ↔ B · Reference height: 520 mm (52.0 cm) · 1 mm = 1.08 px
Castle Windsor DukevsHarbeth Compact 7ES-3 XD2
The Harbeth Compact 7ES-3 XD2 stands 52.0 cm tall — about 5.0 cm more than the Castle Windsor Duke at 47.0 cm. At 90 dB against 86 dB, the Castle Windsor Duke is the easier load to drive and plays louder from the same amplifier. The Harbeth Compact 7ES-3 XD2 reaches deeper in the bass, down to 45 Hz versus 52 Hz. The Castle Windsor Duke is rear-ported and the Harbeth Compact 7ES-3 XD2 is front-ported. Both land in a similar price bracket, around $5,525 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Castle | Harbeth |
| Model | Castle Windsor Duke | Harbeth Compact 7ES-3 XD2 |
| Height | 470 mm | 520 mm |
| Width | 280 mm | 272 mm |
| Depth | 346 mm | 305 mm |
| Weight | 13.5 kg | 13.2 kg |
| Enclosure | bass-reflex-rear | bass-reflex-front |
| Drivers | 1× 200 mm mid-bass (woven polypropylene), 1× 28 mm tweeter (micro-fibre dome) | 1× 25 mm tweeter (ferrofluid-cooled dome), 1× 200 mm mid-bass (RADIAL polymer cone) |
| Frequency — low | 52 Hz | 45 Hz |
| Frequency — high | 22000 Hz | 20000 Hz |
| Sensitivity | 90 dB | 86 dB |
| Impedance | 8 Ω | 6 Ω |
| Recommended amp | 30–150 W | — |
| MAP (USD) | $5,760 / pair | $5,290 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | castle.uk.com ↗ | harbeth.co.uk ↗ |
| 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.