Each magnetically shielded satellite enclosure houses a single 57mm driver. Due to the way the satellites are designed, each enclosure directs the sound about four degrees above horizontal, ideally pointing directly towards the user seated at their computer. The design applied to the satellite is far from conventional, and it is apparent Logitech's aesthetics team had a major role in the construction of the system.
The neodymium magnet drivers used in the satellites make up Logitech's Linear Magnetic Drive Audio Technology. Basically, the neodymium magnets are said to be more efficient than the paper drivers used in many other products, increasing efficiency, linear frequency response, and delivering a wider range of frequency reproduction.
After listening to a host of audio sources, the general consensus was that the satellites did a good job of reproducing midrange sound and an acceptable job with the highs. With the treble control dial in the "middle" position, much of the high end was simply lost - gone - not there. With the treble control max'ed out, the high end sounded forced, not quite as clean and crisp, as we would have liked. On top of that, amplification of the treble really opened up the satellites to distortion in the upper volume ranges.
Dialing in treble somewhere between "normal" and "max" gave us the best balance between sound quality and accurate reproduction, and for $180, we couldn't really ask for more.