M1808 - LF Drivers

M1808 - LF Drivers

Product description:

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

Main features: 

  • aluminum die-cast octagonal frame with small installation dimensions; 
  • removable self-centering ferrite magnet system; 
  • inside-outside copper voice coil;
  • ventilated voice coil gap;
  • double aluminum demodulation ring;
  • glass fiber reinforced weather protected cone;
  • double silicon spider.

Product specification:

  • 18” nominal diameter;
  • 3200 W AES program power;
  • 96 dB 1W/1m sensitivity;
  • 4.5” copper voice coil;
  • 14.9 kg weight.

Specifications
Nominal diameter, inches (mm) 18(460)
Nominal impedance, Ohm 8
Rated power (AES), W 1600
Frequency range, Hz 35-1000
Sensitivity (1W / 1m), dB 97
Minimum impedance, Ohm 6,7@175Hz
Bl product, Tm 29,8
Voice coil inductance, mH (1kHz) 1,27
Moving mass Mms, g 274
Voice coil
Diameter, inches (mm) 4,5(115)
Winding material copper
Former material glass fiber
Winding depth, mm 30
Magnetic system
Magnetic gap depth, mm 11
Flux density, T 1,1
Thiele-Small parameters
Fs, Hz 34,5
Vas, l 172
Qts 0,34
Qes 0,36
Qms 5,2
Re, Оhm 5,4
Sd, сm2 1250
Xmax, mm 12,25
n, % 1,9
Mounting information
Overall diameter, mm 448/480
Baffle cutout diameter, mm 424
Bolt hole diameter, mm 7,5/9,5
Bolt circle diameter, mm 450
Height, mm 218
Net weight, kg 14,9