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Front view — side by side at true scale
T+A Solitaire S 430vsBowers & Wilkins 803 D4
The T+A Solitaire S 430 stands 118.0 cm tall — about 1.5 cm more than the Bowers & Wilkins 803 D4 at 116.5 cm. On footprint the Bowers & Wilkins 803 D4 is the wider cabinet (33.8 cm versus 26.0 cm). At 90 dB against 86 dB, the Bowers & Wilkins 803 D4 is the easier load to drive and plays louder from the same amplifier. The Bowers & Wilkins 803 D4 reaches deeper in the bass, down to 19 Hz versus 29 Hz. Low frequencies come from a 220 mm cone on the T+A Solitaire S 430 and a 180 mm cone on the Bowers & Wilkins 803 D4. Both land in a similar price bracket, around $28,450 a pair.
| A | B | |
|---|---|---|
| Manufacturer | T+A | Bowers & Wilkins |
| Model | Solitaire S 430 | 803 D4 D4 |
| HiFi ladder position | #192 of 276 floorstander | #178 of 276 floorstander |
| Height | 46.5 in | 45.9 in |
| Width | 10.2 in | 13.3 in |
| Depth | 17.3 in | 20.1 in |
| Weight | 121.3 lb | 137 lb |
| Enclosure | bass-reflex-down | bass-reflex-down |
| Drivers | 1× tweeter (magnetostat), 2× 5.9 in midrange (aluminium), 2× 8.7 in woofer (aluminium) | 1× 1 in tweeter (diamond dome), 1× 5.1 in midrange (Continuum cone with FST surround), 2× 7.1 in woofer (Aerofoil cone) |
| Frequency — low | 29 Hz | 19 Hz |
| Frequency — high | 45000 Hz | 28000 Hz |
| Sensitivity | 86 dB | 90 dB |
| Impedance | 4 Ω | 8 Ω |
| Recommended amp | — | 50–500 W |
| MAP (USD) | $29,900 / pair | $27,000 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | ta-hifi.de ↗ | bowerswilkins.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.

