M1540 - LF Drivers

M1540 - LF Drivers

Product description:

Low frequency transducer for 2-way and bass reflex system. 

Main features: 

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

Product specification:

  • 15” nominal diameter;
  • 800 W AES program power;
  • 97.5 dB 1W/1m sensitivity;
  • 3” copper voice coil;
  • 7.5 kg weight.

Specifications
Nominal diameter, inches (mm) 15(380)
Nominal impedance, Ohm 4/8
Rated power (AES), W 400
Frequency range, Hz 40-2500
Sensitivity (1W / 1m), dB 97,5
Minimum impedance, Ohm 7,1@195Hz
Bl product, Tm 23,2
Voice coil inductance, mH (1kHz) 1,34
Moving mass Mms, g 119
Voice coil
Diameter, inches (mm) 3(76)
Winding material copper
Former material glass fiber
Winding depth, mm 17
Magnetic system
Magnetic gap depth, mm 10
Flux density, T 1,25
Thiele-Small parameters
Fs, Hz 45,5
Vas, l 114
Qts 0,36
Qes 0,37
Qms 7,46
Re, Оhm 6
Sd, сm2 892
Xmax, mm 6
n, % 2,7
Mounting information
Overall diameter, mm 389
Baffle cutout diameter, mm 358
Bolt hole diameter, mm 7
Bolt circle diameter, mm 370,5
Height, mm 168
Net weight, kg 7,5