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