About the MartinLogan Motion CI MC4
A compact speaker with big sound
A compact speaker with big sound
Want revealing overhead audio in a small- to medium-sized room? The Motion CI MC4 in-ceiling speaker delivers MartinLogan's signature sound without taking up any floor space.
Use a pair of these stealthy speakers for music, or as overhead effects channels in your custom-installed home theater system.

A built-in back-box ensures well-balanced sound and protects against dust and dirt.
An acclaimed tweeter delivers smooth, sweet highs
One of the reasons the Motion CI MC4 sounds so good is its Folded Motion® tweeter.
This unique, accordion-style design yields quick, accurate, and very smooth highs. The Folded Motion tweeter is paired here with a 4" woven fiberglass woofer for textured midrange and tuneful bass.
A built-in enclosure elevates performance
My favorite feature of the MC4 is the integrated back-box that's built onto the speaker.
This carefully designed enclosure helps it deliver consistently focused, well-balanced sound no matter what kind of space is above it in your ceiling. It also keeps dust and dirt out of your speaker.
Build a Motion Series home theater
The MC4 would make a great overhead speaker in an immersive Dolby Atmos® surround system made up of MartinLogan Motion Series speakers:
- floor-standing speakers for front left and right channels
- bookshelf speakers for front, rear, or surround channels
- center channel speakers for clear dialogue
DIY installation
If this is a do-it-yourself install, check out our guide to installing in-ceiling speakers, along with our selection of in-wall speaker wire.
I recommend using MartinLogan's pre-construction brackets for a precise, secure installation (sold separately).
Product highlights:
- ideal for an in-ceiling music system or overhead surround effects in a home theater system
- built-in back-box ensures well-balanced sound and protects against dust and dirt
- 1" x 1.4" Folded Motion tweeter for smooth, natural highs
- 4" woven fiberglass woofer for punchy bass and textured midrange
- frequency response: 90-25,000 Hz (±3 dB)
- recommended amplifier power: 50-120 watts
- sensitivity: 90 dB
- impedance: 8-ohms compatible
- ultra-thin bezel and paintable magnetic grille to match your décor
- compatible with MartinLogan's pre-construction brackets for a precise, secure installation (sold separately)
- cutout diameter: 4-15/16"
- overall diameter: 5-11/16"
- mounting depth: 5-1/2"
- weight: 2.1 lbs.
- warranty: 5 years
- Our 60-day money-back guarantee
- MFR # MC4
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More details on the MartinLogan Motion CI MC4

Features & specs
Features | ||
---|---|---|
Quantity in Package | Single | |
Tweeter | Folded Motion Ribbon | |
Aimable Tweeter | No | |
Woofer Composition | Fiberglass | |
Woofer Surround | --- | |
Moisture-resistant | No | |
Connector Type | --- | |
Bi-Amp Inputs | No | |
Built-in Back-box | Yes | |
Specs | ||
Tweeter Size | 1" x 1.4" | |
Midrange Size | --- | |
Speaker Shape | N/A | |
Woofer Size | 4 | |
Cutout Width | 4.3125 | |
Cutout Height | 4.3125 | |
Power Range (Watts) | --- | |
Sensitivity | 90 dB | |
Impedance (Ohms) | 4 | |
Frequency Response | 90-25kHz | |
Parts Warranty | 5 Years | |
Labor Warranty | 5 Years |
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