Moving Magnet drivers are composed of a series of multiple permanent magnets that are mechanically held together and sandwiched between two coils.
With the coils being stationary there is no moving conductor, so they can withstand very high currents, and take full advantage of class-d amplification.
The advantages of this technology are felt in the lowest end of the spectrum, where massive force is required to reproduce low, sustained sounds.
The M-Force reaches 4000N (900 lb) of force and features virtually no power compression.
The smaller MOVER is a shaker-type transducer and is capable of reaching up to 900 N (200 lb) of force.