Klipsch RP-504C II vs MartinLogan Motion XT C100
The Klipsch RP-504C II is more sensitive (96 dB vs 93 dB), so it plays louder per watt, is an easier load for a receiver (8 Ω vs 5 Ω) and costs less ($750 vs $1,600). The MartinLogan Motion XT C100 plays lower (42 Hz vs 50 Hz).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| RP-504C II | Motion XT C100 | |
|---|---|---|
| Receivers and amps that drive it | 29 of 29 | 28 of 29, 14 after a setting change |
Specs side by side
Values that differ are bold. A dash means that model doesn't publish the spec.
| RP-504C II | Motion XT C100 | |
|---|---|---|
| Impedance | 8 Ω | 5 Ω |
| Sensitivity | 96 dB (2.83 V, 1 m) in-room | 93 dB |
| Low end | 50 Hz | 42 Hz |
| Drivers | 1 × 25 mm, 4 × 133 mm | 1 × 32 mm, 2 × 165 mm |
| Size | 32×7×15 in | 24×8×14 in |
| Weight | 16.45 kg (36.3 lb) | 15.4 kg (34 lb) |
| MSRP | $750 each (MSRP, September 2026) | $1,600 each (MSRP, September 2026) |
| Recommended amplifier power | — | 20–300 W |
Every spec and pairing: Klipsch RP-504C II, MartinLogan Motion XT C100.
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References
- Klipsch RP-504C II: Spec sheet, assets.klipsch.com, retrieved September 15, 2026
- Klipsch RP-504C II: Retailer listing, abt.com, retrieved September 15, 2026
- MartinLogan Motion XT C100: Spec sheet, martinlogan.com, retrieved September 15, 2026
- MartinLogan Motion XT C100: Retailer listing, audioadvice.com, retrieved September 15, 2026
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