Impedance   150+/-20%DIA at  1 KHz

Sensitivity     95+/-3dB 

S.P.L            60mv

 at 1KHz o dB 2x10(-5) Pa

Magnet         ND-Fe-B Magnet

Impedance   150+/-20%DIA at 1 KHz

Sensitivity     95+/-3dB 

S.P.L 60mv

      at 1KHz  dB 2x10(-5) Pa

Magnet         Ferrite magnet

Impedance   150+/-20%DIA at 1 KHz

Sensitivity     95+/-3dB 

S.P.L            60mv                  

at 1KHz o dB 2x10(-5) Pa

Magnet         Ferrite magnet

Impedance   150+/-20%DIA at 1 KHz

Sensitivity     95+/-3dB

 S.P.L 60mv

a t 1KHz o dB 2x10(-5) Pa