Woven Fiberglass Hybrid midrange and Aluminum Phase Plug
The Woven Fiberglass Hybrid midrange cone is identical to the Woven Fiberglass Hybrid woofer with the important addition of a true phase plug. Midranges benefit from a true phase plug to help synchronize the sound that comes from the edge and center of the cone and time align the frequencies in the 300Hz-2K range. Frequencies below this, like those from a woofer, are omnidirectional by nature and do not need a phase plug which actually limits the SPL of a woofer. The phase plug slows down the acoustic wave from the center of the cone so it's transmitted at the same time as the acoustic wave from the edge, which is marginally slower, for perfect sonic accuracy. It also reduces cone mass to permit an extended frequency response and allows more airflow through the motor structure which improves cooling, thus increasing power handling.