Polk Signature Elite ES50vsCastle Knight 3
| A | B | |
|---|---|---|
| Manufacturer | Polk | Castle |
| Model | Polk Signature Elite ES50 | Castle Knight 3 |
| Height | 950 mm | 820 mm |
| Width | 261 mm | 165 mm |
| Depth | 277 mm | 265 mm |
| Weight | 14.5 kg | 10.7 kg |
| Enclosure | bass-reflex-down | transmission-line |
| Drivers | 1ร 25 mm tweeter (Terylene Dome), 2ร 133 mm mid-bass (Dynamic Balance mica-reinforced polypropylene cone) | 1ร 130 mm mid-bass, 1ร 25 mm tweeter (soft dome) |
| Frequency โ low | 38 Hz | 38 Hz |
| Frequency โ high | 40000 Hz | 24000 Hz |
| Sensitivity | 88 dB | 88 dB |
| Impedance | 8 ฮฉ | 8 ฮฉ |
| Recommended amp | 40โ200 W | 15โ100 W |
| MAP (USD) | $700 / pair | $770 / pair |
| Where to buy | Check availability โ | Check availability โ |
| Brand website | polkaudio.com โ | castle.uk.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.