Each roll on a typical subwoofer spider has a uniform height, but as the center of the region with a high voltage, for example, if the subwoofer excursion is especially large - this area can be stretched, which leads to breakage in the spider and limiting higher power . But a new spider roll gradually higher than that of Kenwood, towards the center, which can withstand more stress in this area with less strain. The design goal was to gradually transfer up-down movement outward to reduce tensions in the middle of the field. As the spider has a large surface area for better drainage stress from the center, it will contribute to increased mechanical damage during excursion and enables the subwoofer to withstand more power.