Description
The most compact in-ceiling speaker in the MartinLogan Motion 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.
T
he Sound of Invisibility:
Folded Motion® Tweeters
MartinLogan’s signature Folded Motion Tweeter utilizes an extremely low-mass diaphragm that “squeezes” air, thus requiring significantly less excursion than the typical 1-inch dome tweeter. Its folded design allows for a much larger surface area (compared to that of a regular 1-inch dome tweeter), controlled dispersion characteristics, and vanishingly low distortion. It’s a miracle of audio engineering that delivers much of the high-frequency detail, speed and response of a large, dynamic electrostatic panel in a small space.
This thin-film transducer design packs all the accuracy and delicacy of an electrostatic panel into a small space. Folding the dramatically lightweight film into an accordion-like structure increases the surface area, giving Folded Motion tweeters eight to ten times greater surface area than typical tweeters. This ideal combination of light and large produces superior accuracy, extended frequency bandwidth and higher output capability; all with a faster, more efficient transient response, and virtually zero distortion. In these characteristics, the Folded Motion Tweeter design can mimic the performance of a large electrostatic panel in the confines of a more traditional loudspeaker enclosure.
Specifications
Specifications are subject to change without notice
Frequency Response
90 – 25,000 Hz ±3dB
Aiming
N/A
Sensitivity
90dB @2.83V/ 1 meter
Impedance
Compatible with 8 ohms
Crossover Frequency
2,230 Hz
High Frequency Driver
FMT Transducer 1” x 1.4” (2.6cm x 3.6cm) Opening 5.25” x 1.75” (13.3cm x 4.4cm) Diaphragm
Low Frequency Driver
4” (10.16cm) black
fiberglass cone
Suitable Amplifier Range
50–120 Watts
Max Power Handling
60 Watts
Binding Post Inputs
Push style accommodates
wire up to 12AWG
Weight
2.02 lbs.
(0.9 kg) each
Dimensions (overall size)
5.63” x 5.65”
(14.3cm x 14.3cm)
Required Wall Opening (includes tolerance)
4.89” (12.41cm)
diameter
Projection From Wall Surface
0.26” (0.65cm)
Depth Behind Wall Surface
5.50” (13.9cm)
