"Visaton
50-mm (2"") high-end titanium dome for the mid range between 800 - 5000 Hz. In conjunction with the strongly damped surround, the extremely hard and ultra-lightweight titanium dome achieves a linear and partially vibration-free frequency response. A high level of efficiency and a high load capacity can be realised simultaneously thanks to the enormous magnetic induction in the air gap filled with ferrofluid."