MODEL  TYPE  JF 8  MID-BASS  GENERAL SPECIFICATIONS  Nominal Diameter  200/8  mm / inch  Rated impedance  8  ohms  Power handing capacity  150  watts  Sensitivity  90.5  dB / 1w / 1m  Frequency Range  FS-4000  Prophet  Voice Coil Diameter  50/2  mm / inch  Voice Coil Material  Copper  Number of layer  2nd  Kind of layer  Outside  THIELE-SMALL PARAMETERS  Resonance frequency  fs  74  Hazrat  Dc resistance  Reina  6.8  ohms  Mechanical factor  qms  5.1  Electrical factor  Qes  0.93  Total factor  qts  0.79  BL factor  BL  9.5  TM  Effective Moving mass  mms  22.5  g  Effective Cas air load  Vasa  14  liters  Effective piston area  sd  0.0219  m ^ 2  MOUNTING INFORMATION  Overall Diameter  Φ210 / Φ8.3  mm / inch  Bolt Circle Diameter  Φ198 / Φ7.8  mm / inch  Bolt Hole Diameter  4-Φ6 * 9/8-Φ0.24 * 12:35  mm / inch  Mount Baffle Cut-out  175 / 6.89  mm / inch  Depth  102/4  mm / inch  SHIPPING INFORMATION  Net Weight (6 units)  15.6  kg  Shipping Weight (6 units)  17.1  kg  Package Size (6 units)  570X250X250  mm 
 
 MODEL  TYPE  JF 8  MID-BASS  GENERAL SPECIFICATIONS  Nominal Diameter  200/8  mm / inch  Rated impedance  8  ohms  Power handing capacity  150  watts  Sensitivity  90.5  dB / 1w / 1m  Frequency Range  FS-4000  Prophet  Voice Coil Diameter  50/2  mm / inch  Voice Coil Material  Copper  Number of layer  2nd  Kind of layer  Outside  THIELE-SMALL PARAMETERS  Resonance frequency  fs  74  Prophet  Dc resistance  Reina  6.8  ohms  Mechanical factor  qms  5.1  Electrical factor  Qes  0.93  Total factor  qts  0.79  BL factor  BL  9.5  TM  Effective Moving mass  mms  22.5  g  Effective Cas air load  Vasa  14  liters  Effective piston area  sd  0.0219  m ^ 2  MOUNTING INFORMATION  Overall Diameter  Φ210 / Φ8.3  mm / inch  Bolt Circle Diameter  Φ198 / Φ7.8  mm / inch  Bolt Hole Diameter  4-Φ6 * 9/8-Φ0.24 * 12:35  mm / inch  Mount Baffle Cut-out  175 / 6.89  mm / inch  Depth  102/4  mm / inch