KEF Q750 vs Polk Reserve R500
The KEF Q750 is more sensitive (88 dB vs 87 dB), so it plays louder per watt and plays lower (48 Hz vs 49 Hz). The Polk Reserve R500 costs less ($699 vs $900).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| Q750 | Reserve R500 | |
|---|---|---|
| Receivers and amps that drive it | 29 of 29 | 29 of 29 |
Specs side by side
Values that differ are bold. A dash means that model doesn't publish the spec.
| Q750 | Reserve R500 | |
|---|---|---|
| Impedance | 8 Ω | 8 Ω |
| Sensitivity | 88 dB (2.83 V, 1 m) | 87 dB (2.83 V, 1 m) |
| Low end | 48 Hz | 49 Hz |
| Drivers | 1 × 25 mm, 2 × 165 mm, 2 × 165 mm | 1 × 25 mm, 2 × 133 mm |
| Size | 13×38×12 in | 10×41×14 in |
| Recommended amplifier power | 15–150 W | 25–200 W |
| Weight | 16.5 kg (36.4 lb) | 17.7 kg (39 lb) |
| MSRP | $900 each (MSRP, January 2025) | $699 each (MSRP, September 2026) |
Every spec and pairing: KEF Q750, Polk Reserve R500.
Try either one in your own room.
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References
- KEF Q750: Owner's manual, assets.kef.com, retrieved September 15, 2026
- KEF Q750: Manufacturer product page, web.archive.org, retrieved September 15, 2026
- Polk Reserve R500: Spec sheet, polkaudio.com, retrieved September 15, 2026
- Polk Reserve R500: Owner's manual, polkaudio.com, retrieved September 15, 2026
- Polk Reserve R500: Manufacturer product page, polkaudio.com, retrieved September 15, 2026
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