JBL Stage 245C vs Polk Monitor XT30
The JBL Stage 245C is more sensitive (91 dB vs 89 dB), so it plays louder per watt and plays lower (55 Hz vs 77 Hz). The Polk Monitor XT30 is an easier load for a receiver (8 Ω vs 6 Ω) and costs less ($179 vs $440).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| Stage 245C | Monitor XT30 | |
|---|---|---|
| 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.
| Stage 245C | Monitor XT30 | |
|---|---|---|
| Impedance | 6 Ω | 8 Ω |
| Sensitivity | 91 dB (2.83 V, 1 m) | 89 dB |
| Low end | 55 Hz | 77 Hz |
| Drivers | 1 × 25 mm, 4 × 114 mm | 1 × 25 mm, 2 × 133 mm |
| Size | 29×6×9 in | 19×7×8 in |
| Recommended amplifier power | 20–150 W | 30–200 W |
| Weight | 12 kg (26.5 lb) | 5.9 kg (13 lb) |
| MSRP | $440 each (MSRP, September 2026) | $179 each (MSRP, September 2026) |
Every spec and pairing: JBL Stage 245C, Polk Monitor XT30.
Try either one in your own room.
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References
- JBL Stage 245C: Spec sheet, in.jbl.com, retrieved September 15, 2026
- JBL Stage 245C: Retailer listing, worldwidestereo.com, retrieved September 15, 2026
- Polk Monitor XT30: Spec sheet, denon.com, retrieved September 15, 2026
- Polk Monitor XT30: Manufacturer product page, polkaudio.com, retrieved September 15, 2026
- Polk Monitor XT30: Owner's manual, polkaudio.com, retrieved September 15, 2026
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