The most compact in-ceiling speaker in the MartinLogan Motion CI series; the MC4 is also one of the most versatile. The stunning clarity of its Folded Motion Tweeter paired with a lightweight woven fiberglass woofer all wrapped up in a built-in enclosure means you get incredible, and predictable sound exactly where you want it. Perfectly suited for a whole house music system, a dedicated home theater or even as a low-profile height effect channel, the MC4 is a fantastic all-around performer. All MartinLogan Motion CI Series speakers feature our signature Folded Motion Tweeter or FMT. This innovative piece of audio technology provides incredible detail, precise clarity, clean output and high efficiency in a small but mighty package. Pairing this tweeter with lightweight woven fiberglass woofers means that Motion CI delivers a clean and balanced sound that is perfectly suited for any application. Whether you listen to music, movies or a little bit of everything, Motion CI gives you a true high-end audio experience at an affordable price. To round out the assortment, pre-construction brackets are available for all models, and all in-ceiling models have square grilles and retrofittable back enclosures available separately.