100mm carbon cone midrange Adopts a newly developed 100mm carbon cone diaphragm. This diaphragm material is made of high modulus carbon that is molded in a vacuum and autoclave. Achieves the frequency response unique to a high-end 10cm unit. A large neodymium magnet is used in the pole piece and magnetic circuit designed using magnetic flux analysis software. The wide and lightweight Nomex voice coil also provides a wide playback band. Uses a powder-coated aluminum die-cast basket. The back pressure passage resistance is extremely low and its unique shape significantly reduces vibration and resonance. The high range extends so easily that you'll think it can be used over a full range. Comes with a CNC-machined aluminum grill.