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Compare speakers at true scale
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References
Front view — side by side at true scale
AMission ZX-3BPolk Reserve R500
Mission ZX-3vsPolk Reserve R500
The Mission ZX-3 stands 110.1 cm tall — about 5.6 cm more than the Polk Reserve R500 at 104.5 cm. On footprint the Polk Reserve R500 is the wider cabinet (25.3 cm versus 24.0 cm). At 90 dB against 87 dB, the Mission ZX-3 is the easier load to drive and plays louder from the same amplifier. The Mission ZX-3 reaches deeper in the bass, down to 42 Hz versus 49 Hz. Both land in a similar price bracket, around $1,404 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Mission | Polk |
| Model | Mission ZX-3 | Polk Reserve R500 |
| Height | 43.3 in | 41.1 in |
| Width | 9.4 in | 10 in |
| Depth | 14.3 in | 13.7 in |
| Weight | 45 lb | 39 lb |
| Enclosure | bass-reflex-rear | bass-reflex-rear |
| Drivers | 1× 5.1 in mid-bass (aluminium), 1× 1.5 in tweeter (ring dome) | 1× 1 in tweeter (Pinnacle ring radiator), 2× 5.2 in woofer (Turbine cone) |
| Frequency — low | 42 Hz | 49 Hz |
| Frequency — high | 24000 Hz | 36000 Hz |
| Sensitivity | 90 dB | 87 dB |
| Impedance | 4 Ω | 4 Ω |
| Recommended amp | 25–150 W | 25–200 W |
| MAP (USD) | $1,410 / pair | $1,398 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | mission.co.uk ↗ | 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.

