Castle Avon 4vsQuad S-4
| A | B | |
|---|---|---|
| Manufacturer | Castle | Quad |
| Model | Castle Avon 4 | Quad S-4 |
| Height | 955 mm | 870 mm |
| Width | 180 mm | 180 mm |
| Depth | 310 mm | 300 mm |
| Weight | 17.6 kg | 20.5 kg |
| Enclosure | transmission-line | passive-radiator |
| Drivers | 1ร 130 mm woofer, 1ร 115 mm midrange, 1ร tweeter (ribbon) | 1ร tweeter (ribbon), 1ร 100 mm midrange (woven Kevlar cone), 2ร 125 mm woofer (woven Kevlar cone) |
| Frequency โ low | 45 Hz | 44 Hz |
| Frequency โ high | 20000 Hz | 23000 Hz |
| Sensitivity | 89 dB | 88 dB |
| Impedance | 8 ฮฉ | 6 ฮฉ |
| Recommended amp | 25โ100 W | 40โ200 W |
| MAP (USD) | โ | $1,499 / pair |
| Where to buy | Check availability โ | Check availability โ |
| Brand website | castle.uk.com โ | quad-hifi.co.uk 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.