TrueScaleAudio
Compare speakers at true scale
Pick two speakers and see them side by side at their real-world size.
Front view — side by side at true scale
Click either cabinet to swap A ↔ B · Reference height: 1215 mm (121.5 cm) · 1 mm = 0.46 px
Bowers & Wilkins 803 D4vsTAD Evolution One TX
The TAD Evolution One TX stands 121.5 cm tall — about 5.0 cm more than the Bowers & Wilkins 803 D4 at 116.5 cm. On footprint the TAD Evolution One TX is the wider cabinet (35.0 cm versus 33.8 cm). At 90 dB against 88 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 180 mm cone on the Bowers & Wilkins 803 D4 and a 160 mm cone on the TAD Evolution One TX. Both land in a similar price bracket, around $27,498 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Bowers & Wilkins | TAD |
| Model | 803 D4 D4 | Evolution One TX |
| HiFi ladder position | #180 of 281 floorstander | #212 of 281 floorstander |
| Height | 1165 mm | 1215 mm |
| Width | 338 mm | 350 mm |
| Depth | 511 mm | 512 mm |
| Weight | 62.15 kg | 46 kg |
| Enclosure | bass-reflex-down | bass-reflex-down |
| Drivers | 1× 25 mm tweeter (diamond dome), 1× 130 mm midrange (Continuum cone with FST surround), 2× 180 mm woofer (Aerofoil cone) | 2× 160 mm woofer (aramid), 1× 90 mm midrange (magnesium), 1× 25 mm tweeter (beryllium) |
| Frequency — low | 19 Hz | 29 Hz |
| Frequency — high | 28000 Hz | 60000 Hz |
| Sensitivity | 90 dB | 88 dB |
| Impedance | 8 Ω | 4 Ω |
| Recommended amp | 50–500 W | — |
| MAP (USD) | $27,000 / pair | $27,995 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | bowerswilkins.com ↗ | technicalaudiodevices.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.