Plans for the driver: http://www.lii-audio.com/index.php/dt_gallery/design-of-fast-8/
Fast-8 is our new 8″ full range driver among Fast series. As the name gives it has a fast sensitivity, and like all Lii Audio FR drivers, it has exquisite and clear style of sound. With a Qts of 0.62, it can be a good choice for Open Baffles.
*For the new batch of Fast-8, we have upgraded the phase cone to acrylic one that has standardized shape especially for the top point, without natural knots or fissures like wooden ones, and with surface specially designed, to bring a slight improvement on the high end.