Materiał magnesu / Magnet material

•  ferryt / ferrite (1)
•  neodym / neodymium (3)

Średnica cewki / Voice coil diameter

•  1,5" (38mm) (1)
•  1,25" (32mm) (1)
•  2" (51mm) (1)
•  3" (75mm) (2)