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: 1144 mm (114.4 cm) · 1 mm = 0.49 px
Bowers & Wilkins 804 D4vsPolk Reserve R700
The Polk Reserve R700 stands 114.4 cm tall — about 7.3 cm more than the Bowers & Wilkins 804 D4 at 107.1 cm. On footprint the Polk Reserve R700 is the wider cabinet (32.8 cm versus 28.8 cm). At 89 dB against 88 dB, the Bowers & Wilkins 804 D4 is the easier load to drive and plays louder from the same amplifier. The Bowers & Wilkins 804 D4 reaches deeper in the bass, down to 24 Hz versus 38 Hz. Low frequencies come from a 165 mm cone on the Bowers & Wilkins 804 D4 and a 203 mm cone on the Polk Reserve R700. On price, the Bowers & Wilkins 804 D4 sits higher — about $13,000 a pair against $1,499 for the Polk Reserve R700.
| A | B | |
|---|---|---|
| Manufacturer | Bowers & Wilkins | Polk |
| Model | 804 D4 | Reserve R700 |
| HiFi ladder position | #194 of 463 floorstander | #283 of 463 floorstander |
| Height | 1071 mm | 1144 mm |
| Width | 288 mm | 328 mm |
| Depth | 391 mm | 428 mm |
| Weight | 36.85 kg | 35.9 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× 165 mm woofer (Aerofoil cone) | 1× 25 mm tweeter (Pinnacle ring radiator), 1× 165 mm midrange (Turbine cone), 2× 203 mm woofer (polypropylene cone) |
| Crossover frequency | — | 350 / 2700 Hz |
| Frequency — low | 24 Hz | 38 Hz |
| Frequency — high | 28000 Hz | 38000 Hz |
| Sensitivity | 89 dB | 88 dB |
| Impedance | 8 Ω | 4 Ω |
| Recommended amp | 50–200 W | 50–300 W |
| MAP (USD) | $13,000 / pair | $1,499 each |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | bowerswilkins.com ↗ | polkaudio.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.