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MartinLogan Motion XT C100

Center channel speaker · Motion XT series

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The MartinLogan Motion XT C100 is a 5 Ω center channel speaker rated 93 dB, with a recommended 20–300 W amplifier. Of the 29 receivers and amps in our catalogue, 14 are rated to drive it, 14 work after an impedance setting change and 1 is not recommended.

$1,600 each (MSRP, September 2026)

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Receivers and amplifiers for the Motion XT C100

Each pairing is checked by our compatibility engine: the speaker's impedance against the amplifier's rated minimum, and height decoding for height speakers. Whether it plays loud enough depends on how far you sit, which the 3D editor works out for your room.

Rated to drive it (14)

Works after a setting change (14)

Set the receiver to 4 Ω in its speaker setup.

Not recommended (1)

MartinLogan Motion XT C100 is 5 Ω; Denon AVR-S570BT supports 6 Ω and up.

Motion XT C100 specifications

Impedance5 Ω
Sensitivity93 dB
Low end42 Hz
Drivers1 × 32 mm, 2 × 165 mm
Size24×8×14 in
Recommended amplifier power20–300 W
Weight15.4 kg (34 lb)
MSRP$1,600 each (MSRP, September 2026)

Every value comes from the sources under References, last retrieved September 15, 2026. To check it against the rest of your system, use the compatibility checker.

Questions about the Motion XT C100

What receiver do I need for the Motion XT C100?
One rated for 5 Ω speakers. In our catalogue, Emotiva BasX A-700, Monoprice M7100X and Onkyo TX-NR6100 are rated to drive it. Yamaha RX500A, Denon AVR-S670H and Denon AVR-X1700H work once the receiver's impedance setting is changed to 4 Ω. Denon AVR-S570BT is not rated for it.
Is the Motion XT C100 4 ohm or 8 ohm?
The MartinLogan Motion XT C100 has a nominal impedance of 5 Ω, between the two. Use a receiver or amplifier rated down to 5 Ω or lower.
How much power does the Motion XT C100 need?
MartinLogan recommends an amplifier of 20–300 W. Its sensitivity is 93 dB. How much of that you use depends on how far you sit and how loud you listen, which the 3D editor works out for your room.
How low does the Motion XT C100 go?
The MartinLogan Motion XT C100 is rated down to 42 Hz. Below that, a subwoofer takes over; where the bass actually lands depends on your room's modes.
How big is the Motion XT C100?
The MartinLogan Motion XT C100 measures 610 × 203 × 368 mm (24 × 8 × 14.5 in, width × height × depth) and weighs 15.4 kg (34 lb).

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References

  1. MartinLogan Motion XT C100: Spec sheet, martinlogan.com, retrieved September 15, 2026
  2. MartinLogan Motion XT C100: Retailer listing, audioadvice.com, retrieved September 15, 2026

Brand names are trademarks of their owners. Not affiliated with or endorsed by any manufacturer. 3D models are our approximations. Prices are manufacturer list prices (MSRP) as of the month shown. How we earn from buy links: affiliate disclosure.