Technical data

Material:

• Cone:

  Paper

• Spider:

  Nomex

• Surround:

  Foam

• Coil former:

  Aluminum

• Basket:

  Aluminum

• Dust Cap:

  PP

Specifications:

• DC resistance (Rdc):

  3,33 Ω

• Nominal impedance (ZN):

  4 Ω

• Resonance frequency (fs):

  54,9 Hz

• Voice coil diameter:

  50 mm

• Mechanical Q factor (Qms):

  5,59

• Electrical Q factor (Qes):

  0,70

• Total Q factor (Qts):

  0,62

• Moving mass (Mms):

  62,3 g

• Effective piston area (Sd):

  143 cm²

• Mechanical resistance (Rms):

  3,85 kg/s 

• Compliance (Cms):

  135 mm/N 

• Force factor (BL):

  10,1 Tm 

• Equivalent air volume (Vas):

  3,88 cm³

• Efficiency (η):

  0,33 %

• SPL 2,83V/1m:

  85,4 dB