Model No.6000

D.C. Resistance 7.6 k
Resonant Frequency 3.4 kHz
Magnet Anisotropic Ferrite
Pole piece Spacing 50
  Model No.6000M

D.C. Resistance 7.6 k
Resonant Frequency 3.4 kHz
Magnet Anisotropic Ferrite
Pole piece Spacing 50
  Model No.757B

D.C. Resistance (n) 5.5 k, (b) 8.5 k
Resonant Frequency (n) 8.9 kHz, (b) 5.8 kHz
Magnet Anisotropic Ferrite
Pole piece Spacing 50
Model No.757N(CR&GD)

D.C. Resistance 5.5 k
Resonant Frequency 8.85 kHz
Magnet Anisotropic Ferrite
Pole piece Spacing 50
  Model No.763A,600F

D.C. Resistance 5.5 k
Resonant Frequency 9.4 kHz
Magnet Alnico
Pole piece Spacing (n) 50, (b) 52