The WF81 Series is a 8cm woofer driver design, born solely from my Patreon supporters and the 3D printing community. Although early in its design process, it is already showing good results in the form of WF81-4OS.
Although it is intended to have 2 or 3 drivers in this lineup, There will intially be only WF81-4OS. This driver is being designed to work with FD51-4OS and FD51-4PM in either a 2-way setup or a 2.1 setup. You can keep posted on the latest updates by following along on social media!