No longer available - use unsheilded version instead (same specs) : BC25TG15-04
This 104mm diameter tweeter features a 25 mm damped textile dome, a ferrite magnet assembly and ferrofluid in the magnetic gap for enhanced cooling of the voice coil. The BC25SG-15-04 is shielded for minimal electro-magnetic interference.
This tweeter has a wide response with good linearity.
A full datasheet can be downloaded from the bottom of this page.