Main feature of Bliesma T25S-6 tweeter is extremely low moving mass (0.16 g), offering better transient responce and higher efficiency.
Flush mounted surround (also made of fabric) and rear mounted magnet system result flat frequency response and wide off-axis diagram.
Neodymium motor has copper sleeve for low non-linear and modulation distorsions. No ferrofluid is used for better dynamics. Underhung CCAW-voicecoil is wound on titanium former.
Mounting flange and rear chamber are made of aluminium. Rear chamber is filled with natural wool for better damping.