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TrueScaleAudio

Compare speakers at true scale

Pick two speakers and see them side by side at their real-world size.

Speaker A
Speaker B
OverlaySide by side
Presentation mode
References

Front view — side by side at true scale

ACastle Knight 4BCastle Knight 3
Castle Knight 4 front view
Castle Knight 3 front view

Click either cabinet to swap A ↔ B · Reference height: 35.4 in · 1 in = 15.80 px

Castle Knight 4vsCastle Knight 3

The Castle Knight 4 stands 90.0 cm tall — about 8.0 cm more than the Castle Knight 3 at 82.0 cm. At 90 dB against 88 dB, the Castle Knight 4 is the easier load to drive and plays louder from the same amplifier. The Castle Knight 4 reaches deeper in the bass, down to 36 Hz versus 38 Hz. On price, the Castle Knight 4 sits higher — about $1,020 a pair against $770 for the Castle Knight 3.

TrueSpecs presentation

Specifications

mm / kgin / lb
AB
ManufacturerCastleCastle
ModelCastle Knight 4Castle Knight 3
Height35.4 in32.3 in
Width6.5 in6.5 in
Depth10.6 in10.4 in
Weight27.6 lb23.6 lb
Enclosuretransmission-linetransmission-line
Drivers2× 5.1 in mid-bass, 1× 1 in tweeter (soft dome)1× 5.1 in mid-bass, 1× 1 in tweeter (soft dome)
Frequency — low36 Hz38 Hz
Frequency — high24000 Hz24000 Hz
Sensitivity90 dB88 dB
Impedance8 Ω8 Ω
Recommended amp25–150 W15–100 W
MAP (USD)$1,020 / pair$770 / pair
Where to buyCheck availability ↗Check availability ↗
Brand websitecastle.uk.com ↗castle.uk.com ↗
Product pageOpen 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.