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: 130mm
bore diameter: 27mm
height: 23mm
the membrane material: cellulose unpolished
material suspension: rubber
Applications include the speakers Tonsil GDN 13/50/1 etc.
