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JAM Systems :: JAM Systems Loudspeaker Drivers :: JAM Systems 21 Inch Drivers
JAM Systems 21XLF1000 21" 1000W 8 Ohm
High Power 21" Subwoofer
£299.99
£249.99 ex VAT
10% Deposit: £30.00
12 payments: £22.50
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Description:

Main features:

  • Aluminium die-cast frame
  • Removable self-centering ferrite magnet system
  • Inside-outside copper voice coil
  • Ventilated voice coil gap
  • Carbon fibre reinforced cone
  • Double silicon spider


Specifications:

  • Nominal diameter, inches (mm) 21(530)
  • Nominal impedance, Ohm 8
  • Rated power (AES), W 1000
  • Frequency range, Hz 30-500
  • Sensitivity (1W / 1m), dB 98
  • Minimum impedance, Ohm 6,6@120Hz
  • Bl product, Tm 24,5
  • Voice coil inductance, mH (1kHz) 2,2
  • Moving mass Mms, g 281
  • Voice coil Diameter, inches (mm) 4(100)
  • Winding material copper
  • Former material glass fiber
  • Winding depth, mm 25
  • Magnetic gap depth, mm 12
  • Flux density, T 1,05


Thiele-Small parameters:

  • Fs, Hz 27,7
  • Vas, l 465
  • Qts 0,41
  • Qes 0,44
  • Qms 5,8
  • Re, Оhm 5,6
  • Sd, сm2 1662
  • Xmax, mm 9,5
  • n, % 2,15


Mounting information:

  • Overall diameter, mm 540
  • Baffle cutout diameter, mm 490
  • Bolt hole diameter, mm 7
  • Bolt circle diameter, mm 518
  • Height, mm 245
  • Net weight, kg 13,9