Scan-Speak Some of the best drivers in the world come from Denmark, and Scan Speak drivers are no exception. Scan Speak drivers are precision built, and feature robust motor assemblies, magnesium frames, and woofer cones of Polypropylene, Kevlar, Carbon fiber reinforced Paper and Paper. The result is a very smooth and detailed sound that is typical of high quality European drivers. Several Scan-Speak woofers employ a capsule of conductive material at the end of the voice coil that short-circuits the induction of the voice coil regardless of position. This proprietary method, called Symmetric Drive, lowers inductance, reduces driving current rise time by a factor of 10, minimizes impedance rise at higher frequencies to make crossover design easier, reduces distortion, and improves heat transfer from the voice coil to the magnet system. Accessories Revelator Illuminator - New!! Classic Discovery - New!!