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References
Front view — side by side at true scale
APolk Signature Elite ES15BCambridge Audio SX-50
Click either cabinet to swap A ↔ B · Reference height: 305 mm (30.5 cm) · 1 mm = 1.84 px
| A | B | |
|---|---|---|
| Manufacturer | Polk | Cambridge Audio |
| Model | Polk Signature Elite ES15 | Cambridge Audio SX-50 |
| Height | 305 mm | 225 mm |
| Width | 191 mm | 161 mm |
| Depth | 259 mm | 240 mm |
| Weight | 5.9 kg | 3 kg |
| Enclosure | bass-reflex-rear | bass-reflex-rear |
| Drivers | 1× 25 mm tweeter (Terylene Dome), 1× 133 mm mid-bass (Dynamic Balance mica-reinforced polypropylene cone) | 1× 25 mm tweeter (silk dome), 1× 135 mm mid-bass (treated paper cone) |
| Frequency — low | 44 Hz | 50 Hz |
| Frequency — high | 40000 Hz | 22000 Hz |
| Sensitivity | 85 dB | 87 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 20–100 W | 10–100 W |
| MAP (USD) | $300 / pair | $229 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | polkaudio.com ↗ | cambridgeaudio.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.