TrueScaleAudio
Compare speakers at true scale
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Front view — side by side at true scale
Triangle Solstice 3vsCastle Avon 2
The Castle Avon 2 stands 47.5 cm tall — about 5.7 cm more than the Triangle Solstice 3 at 41.8 cm. On footprint the Triangle Solstice 3 is the wider cabinet (22.1 cm versus 21.0 cm). At 90 dB against 88 dB, the Triangle Solstice 3 is the easier load to drive and plays louder from the same amplifier. The Triangle Solstice 3 reaches deeper in the bass, down to 48 Hz versus 50 Hz. Low frequencies come from a 160 mm cone on the Triangle Solstice 3 and a 150 mm cone on the Castle Avon 2. Both land in a similar price bracket, around $1,096 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Triangle | Castle |
| Model | Triangle Solstice 3 | Castle Avon 2 |
| Height | 418 mm | 475 mm |
| Width | 221 mm | 210 mm |
| Depth | 370 mm | 310 mm |
| Weight | 12.9 kg | 10.5 kg |
| Enclosure | bass-reflex-front | transmission-line |
| Drivers | 1× 25 mm tweeter (magnesium-alloy dome (horn-loaded)), 1× 160 mm mid-bass (natural cellulose-pulp cone) | 1× 150 mm woofer, 1× 115 mm midrange, 1× tweeter (ribbon) |
| Frequency — low | 48 Hz | 50 Hz |
| Frequency — high | 22000 Hz | 20000 Hz |
| Sensitivity | 90 dB | 88 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 25–130 W | 25–100 W |
| MAP (USD) | $1,162 / pair | $1,030 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | trianglehifi.com ↗ | castle.uk.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.

