ND811 - LF Drivers

ND811 - LF Drivers

Product description:

High output mid frequency transducer for horn and multi-way speakers. 

Main features: 

  • aluminum die-cast frame; 
  • removable self-centering neodymium magnet system; 
  • edgewound copper clad aluminum voice coil;
  • shorting copper cap.

Product specification:

  • 8” nominal diameter;
  • 300 W AES program power;
  • 99 dB 1W/1m sensitivity;
  • 2” CCAR voice coil;
  • 2 kg weight.

Specifications
Nominal diameter, inches (mm) 8(200)
Nominal impedance, Ohm 8/16
Rated power (AES), W 150
Frequency range, Hz 200-5000
Sensitivity (1W / 1m), dB 99
Minimum impedance, Ohm 8@570Hz
Bl product, Tm 14,8
Voice coil inductance, mH (1kHz) 0,12
Moving mass Mms, g 21,1
Voice coil
Diameter, inches (mm) 2(51)
Winding material CCAR
Former material glass fiber
Winding depth, mm 10
Magnetic system
Magnetic gap depth, mm 9
Flux density, T 1,45
Thiele-Small parameters
Fs, Hz 200
Vas, l 2,5
Qts 0,69
Qes 0,76
Qms 7,5
Re, Оhm 6,3
Sd, сm2 241
Xmax, mm 2,75
n, % 2,5
Mounting information
Overall diameter, mm 210
Baffle cutout diameter, mm 185
Bolt hole diameter, mm 5,5
Bolt circle diameter, mm 196
Height, mm 93
Net weight, kg 2