KEF SP 1057 specifications

Category : Speaker chassis

General

Tech nical data

Thiele Small parameters

Special equipment

Other models of the same series:

  • Manufacturer: 297837cedf2721e3c8b9fa2a31f94c2a
  • Model: B110B/ SP 1057;
  • Years of construction: approximately from 1975;
  • Manufactured in:
  • Color:
  • Weight: 1.13 kg.
  • New price approx.:
  • Type of construction: (Cone/dome/...)
  • Diameter: 110 mm;
  • Load capacity: 28 V (sine wave), full range 50 W;
  • Frequency response: 55 - 3500 Hz;
  • Impedance: nominal 8 ohms;
  • Sound pressure level:
    Impedance (Zmax):
  • Diaphragm area (Sd) : 92 cm2;
  • Reson ant frequency (Fs): 37 (+/- 5) Hz (free air);
  • DC resistance (Re): 7.1 ohms.
  • Voice Coil Inductance (Le):
  • Mechanical Q Factor (Qms): 2.44;
  • Electrical Q Factor (Qes): 0.38;
  • Total Quality (Qts):
  • Equivalent Volume (Vas): 23.6l;
  • Diaphragm Displacement Volume (Vd):
  • Drive factor (Wxl):
  • Total moving mass (Mmd):
  • Effective moving mass (Mms): 9.8 gm;
  • Mechanical losses (Rms):
  • Diaphragm stroke (Xmax, linear): 6 mm.
  • Efficency Bandwidth Product (EBP):
  • Bextren diaphragm.
  • B110A SP 1003 with the same diaphragm diameter.
  • data sheet at 297837cedf2721e3c8b9fa2a31f94c2a.


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KEF SP 1057 relate