M1861 - LF Drivers

M1861 - LF Drivers

Product description:

Extended low frequency transducer for bass reflex and band pass system. 

Main features: 

  • aluminum die-cast frame; 
  • removable self-centering ferrite magnet system; 
  • inside-outside copper voice coil;
  • ventilated voice coil gap;
  • glass fiber reinforced cone;
  • double silicon spider.

Product specification:

  • 18” nominal diameter;
  • 1400 W AES program power;
  • 98 dB 1W/1m sensitivity;
  • 4” copper voice coil;
  • 10.6 kg weight.

Specifications
Nominal diameter, inches (mm) 18(460)
Nominal impedance, Ohm 4/8
Rated power (AES), W 700
Frequency range, Hz 35-1500
Sensitivity (1W / 1m), dB 98
Minimum impedance, Ohm 7,3@160Hz
Bl product, Tm 27,7
Voice coil inductance, mH (1kHz) 1,59
Moving mass Mms, g 192
Voice coil
Diameter, inches (mm) 4(100)
Winding material copper
Former material glass fiber
Winding depth, mm 21
Magnetic system
Magnetic gap depth, mm 9
Flux density, T 1,23
Thiele-Small parameters
Fs, Hz 36,3
Vas, l 215
Qts 0,34
Qes 0,35
Qms 8,63
Re, Оhm 6,17
Sd, сm2 1244
Xmax, mm 8,25
n, % 2,8
Mounting information
Overall diameter, mm 458
Baffle cutout diameter, mm 425
Bolt hole diameter, mm 6,5
Bolt circle diameter, mm 438
Height, mm 194
Net weight, kg 10,6