Castle Knight 3vsPolk Signature Elite ES50
| A | B | |
|---|---|---|
| Manufacturer | Castle | Polk |
| Model | Castle Knight 3 | Polk Signature Elite ES50 |
| Height | 820 mm | 950 mm |
| Width | 165 mm | 261 mm |
| Depth | 265 mm | 277 mm |
| Weight | 10.7 kg | 14.5 kg |
| Enclosure | transmission-line | bass-reflex-down |
| Drivers | 1ร 130 mm mid-bass, 1ร 25 mm tweeter (soft dome) | 1ร 25 mm tweeter (Terylene Dome), 2ร 133 mm mid-bass (Dynamic Balance mica-reinforced polypropylene cone) |
| Frequency โ low | 38 Hz | 38 Hz |
| Frequency โ high | 24000 Hz | 40000 Hz |
| Sensitivity | 88 dB | 88 dB |
| Impedance | 8 ฮฉ | 8 ฮฉ |
| Recommended amp | 15โ100 W | 40โ200 W |
| MAP (USD) | $770 / pair | $700 / pair |
| Where to buy | Check availability โ | Check availability โ |
| Brand website | castle.uk.com โ | polkaudio.com โ |
| Product page | Open product page โ | Open product page โ |
Larger value highlighted in green. For low-frequency extension, lower Hz = greater bass reach, so the deeper side is highlighted.