M0821 - LF Drivers

M0821 - LF Drivers

Product description:

Mid bass transducer for compact two-way and multi-way speakers. 

Main features: 

  • aluminum die-cast frame; 
  • removable self-centering ferrite magnet system; 
  • inside-outside copper voice coil;
  • treated cone for water protection.

Product specification:

  • 8” nominal diameter;
  • 400 W AES program power;
  • 93 dB 1W/1m sensitivity;
  • 2” copper voice coil;
  • 3.6 kg weight.

Specifications
Nominal diameter, inches (mm) 8(200)
Nominal impedance, Ohm 8/16
Rated power (AES), W 200
Frequency range, Hz 65-4000
Sensitivity (1W / 1m), dB 93
Minimum impedance, Ohm 8,3@300Hz
Bl product, Tm 15,5
Voice coil inductance, mH (1kHz) 1,3
Moving mass Mms, g 28,7
Voice coil
Diameter, inches (mm) 2(51)
Winding material copper
Former material glass fiber
Winding depth, mm 15
Magnetic system
Magnetic gap depth, mm 10
Flux density, T 1,08
Thiele-Small parameters
Fs, Hz 59,6
Vas, l 16,7
Qts 0,272
Qes 0,285
Qms 6,4
Re, Оhm 6,4
Sd, сm2 219
Xmax, mm 5
n, % 1,2
Mounting information
Overall diameter, mm 209
Baffle cutout diameter, mm 185
Bolt hole diameter, mm 5,5
Bolt circle diameter, mm 196
Height, mm 109
Net weight, kg 3,6