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MartinLogan Motion XT C100

Motion XT series

The MartinLogan Motion XT C100 is a center channel speaker with 5 Ω impedance and 93 dB sensitivity. 28 of the 29 receivers and amps in our catalogue can drive it, 14 of them once set to 4 Ω.

Impedance
5 Ω
What the receiver must be rated for
Sensitivity
93 dB
Higher is louder per watt
Amplifier power
20–300 W
MartinLogan's recommendation
Bass extension
42 Hz
How low it plays

$1,600 each (MSRP, September 2026)

Check it with your receiverSee it in your room
3D model of the MartinLogan Motion XT C100

Drag to turn it. Built from the published dimensions, not a photo.

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Which receivers and amps can drive it?

What decides it is impedance: the Motion XT C100 is 5 Ω, and the receiver or amp has to be rated for that.

  • Works

    Receivers and amps rated for 5 Ω

    14 in our catalogue

  • Needs a setting change

    Receivers with a 4 Ω setting

    Set the receiver to 4 Ω in its speaker setup.

    14 in our catalogue

  • Not recommended

    Receivers not rated for 5 Ω

    1 in our catalogue

In its price range

All 29 receivers and amps we checked

Works14

Needs a setting change14

Set the receiver to 4 Ω in its speaker setup.

Not recommended1

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

Plan your room around the Motion XT C100.

Draw your room in 3D, place the Motion XT C100 and see how they sound at your seat, with every connection to your receiver checked. Designing is free.

Build it in your room

Motion XT C100 specifications

Impedance
5 Ω
Sensitivity
93 dB
Low end
42 Hz
Drivers
1 × 32 mm, 2 × 165 mm
Size
24×8×14 in
Recommended amplifier power
20–300 W
Weight
15.4 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.