The key features of D2010/8513 tweeter are: front flange with diffraction damping foam, dual rear chamber and ferrite magnet system.
Scan-Speak D2010/851100 - information in PDF format (438 Kb)
Review in Hobby HiFi #3-2001 Magazine (in German, 781 kБ)
Diffraction damping pad for D2010 Classic tweeters.
Air-core OFC foil coil.
Coil wound around a toroidal sandwich core.
Air Core Coil.
Ferro fluid cooled dome tweeter.