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ACambridge Audio SX-80BPolk Signature Elite ES50
| A | B | |
|---|---|---|
| Manufacturer | Cambridge Audio | Polk |
| Model | Cambridge Audio SX-80 | Polk Signature Elite ES50 |
| Height | 38.6 in | 37.4 in |
| Width | 9.2 in | 10.3 in |
| Depth | 13.3 in | 10.9 in |
| Weight | 37.3 lb | 32 lb |
| Enclosure | bass-reflex-front | bass-reflex-down |
| Drivers | 1× 1 in tweeter (silk dome), 2× 6.5 in mid-bass (treated paper cone) | 1× 1 in tweeter (Terylene Dome), 2× 5.2 in mid-bass (Dynamic Balance mica-reinforced polypropylene cone) |
| Frequency — low | 40 Hz | 38 Hz |
| Frequency — high | 20000 Hz | 40000 Hz |
| Sensitivity | 87 dB | 88 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | — | 40–200 W |
| MAP (USD) | $799 / pair | $700 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | cambridgeaudio.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.

