M1801 - LF Drivers

M1801 - LF Drivers

Product description:

High power extended low frequency transducer for bass reflex and horn loaded 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;
  • 97 dB 1W/1m sensitivity;
  • 4” copper voice coil;
  • 14.4 kg weight.

Specifications
Nominal diameter, inches (mm) 18(460)
Nominal impedance, Ohm 8/4
Rated power (AES), W 1000
Frequency range, Hz 35-500
Sensitivity (1W / 1m), dB 97
Minimum impedance, Ohm 7@140Hz
Bl product, Tm 29,5
Voice coil inductance, mH (1kHz) 2,5
Moving mass Mms, g 222
Voice coil
Diameter, inches (mm) 4(99)
Winding material copper
Former material glass fiber
Winding depth, mm 23
Magnetic system
Magnetic gap depth, mm 14
Flux density, T 1,05
Thiele-Small parameters
Fs, Hz 32,3
Vas, l 222
Qts 0,3
Qes 0,31
Qms 9,8
Re, Оhm 6
Sd, сm2 1195
Xmax, mm 8
n, % 2,35
Mounting information
Overall diameter, mm 471
Baffle cutout diameter, mm 414
Bolt hole diameter, mm 7x9
Bolt circle diameter, mm 440
Height, mm 212
Net weight, kg 14,4