total diameter: 248mm
bore diameter: 49mm
height: 55mm
the membrane material: cellulose unpolished
material suspension: the foam polyurethane
for use in speakers Tonsil GDN 25/40/3 22/55 25/60 25/60/1 25/80 ...
total diameter: 200mm
bore diameter: 26mm
height: 50mm
the membrane material: cellulose unpolished
material suspension: the foam polyurethane
for use in speakers Tonsil GDN GDS 20/10 GDN 20/30 20/30/1 ...
total diameter: 150mm
bore diameter: 27mm
height: 29mm
the membrane material: fiberglass
material suspension: rubber
for use in the speakers Tonsil GDN 16/12 16/15 16/30 etc.
