The Model 4348's patented Neodymium Differential Drive NDD™ mid-bass transducer delivers increased power handling with reduced distortion, thanks to its unconventional dual voice coil design, which places the coils at opposite ends of the former, rather than coiled around each other. This design improves heat dissipation and minimizes power compression. A third coil between the drive coils acts as a dynamic brake to limit excess excursion and further reduce distortion. As a result, the 4348 performs with outstanding clarity and vocal intelligibility in the important 300 to 1000Hz range.