TrueScaleAudio
Compare speakers at true scale
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Front view — side by side at true scale
Castle Knight 5vsParadigm Premier 700F
The Paradigm Premier 700F stands 101.2 cm tall — about 2.7 cm more than the Castle Knight 5 at 98.5 cm. On footprint the Paradigm Premier 700F is the wider cabinet (21.5 cm versus 20.0 cm). At 91 dB against 88 dB, the Castle Knight 5 is the easier load to drive and plays louder from the same amplifier. The Castle Knight 5 reaches deeper in the bass, down to 30 Hz versus 33 Hz. Low frequencies come from a 150 mm cone on the Castle Knight 5 and a 140 mm cone on the Paradigm Premier 700F. On price, the Paradigm Premier 700F sits higher — about $1,598 a pair against $1,280 for the Castle Knight 5.
| A | B | |
|---|---|---|
| Manufacturer | Castle | Paradigm |
| Model | Castle Knight 5 | Paradigm Premier 700F |
| Height | 38.8 in | 39.8 in |
| Width | 7.9 in | 8.5 in |
| Depth | 13.2 in | 12.6 in |
| Weight | 44.1 lb | 48.2 lb |
| Enclosure | transmission-line | bass-reflex-rear |
| Drivers | 2× 5.9 in mid-bass, 1× 1 in tweeter (soft dome) | 1× 1 in tweeter (X-PAL dome), 1× 5.5 in midrange (Carbon-infused polypropylene cone), 2× 5.5 in woofer (Carbon-infused polypropylene cone) |
| Frequency — low | 30 Hz | 33 Hz |
| Frequency — high | 24000 Hz | 25000 Hz |
| Sensitivity | 91 dB | 88 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 25–200 W | 15–180 W |
| MAP (USD) | $1,280 / pair | $1,598 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | castle.uk.com ↗ | paradigm.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.

