M1804 - LF Drivers

M1804 - LF Drivers

Product description:

High power extended low frequency transducer for bass reflex and band pass system. 

Main features: 

  • aluminum die-cast frame with improved voice coil ventilation; 
  • 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;
  • 2000 W AES program power;
  • 96 dB 1W/1m sensitivity;
  • 4” copper voice coil;
  • 12.2 kg weight.

Specifications
Nominal diameter, inches (mm) 18(460)
Nominal impedance, Ohm 4/8
Rated power (AES), W 1000
Frequency range, Hz 30-500
Sensitivity (1W / 1m), dB 96
Minimum impedance, Ohm 6,7@140Hz
Bl product, Tm 28,1
Voice coil inductance, mH (1kHz) 2,6
Moving mass Mms, g 237
Voice coil
Diameter, inches (mm) 4(100)
Winding material copper
Former material glass fiber
Winding depth, mm 25
Magnetic system
Magnetic gap depth, mm 11
Flux density, T 1,14
Thiele-Small parameters
Fs, Hz 32,8
Vas, l 208
Qts 0,33
Qes 0,35
Qms 7,9
Re, Оhm 5,7
Sd, сm2 1195
Xmax, mm 9,75
n, % 2
Mounting information
Overall diameter, mm 471
Baffle cutout diameter, mm 414
Bolt hole diameter, mm 7x9
Bolt circle diameter, mm 440
Height, mm 206
Net weight, kg 12,2