M1270R - LF Drivers

M1270R - LF Drivers

Product description:

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 with ventilated gap; 
  • inside-outside copper voice coil;
  • rubber surround suspension system;
  • double silicon spider.

Product specification:

  • 12” nominal diameter;
  • 1000 W AES program power;
  • 91 dB 1W/1m sensitivity;
  • 3” copper voice coil;
  • 9.6 kg weight.

Specifications
Nominal diameter, inches (mm) 12(300)
Nominal impedance, Ohm 4/8
Rated power (AES), W 500
Frequency range, Hz 35-1000
Sensitivity (1W / 1m), dB 91
Minimum impedance, Ohm 7@160Hz
Bl product, Tm 21,2
Voice coil inductance, mH (1kHz) 2,3
Moving mass Mms, g 125,9
Voice coil
Diameter, inches (mm) 3(76)
Winding material copper
Former material glass fiber
Winding depth, mm 29
Magnetic system
Magnetic gap depth, mm 12
Flux density, T 1,15
Thiele-Small parameters
Fs, Hz 32,6
Vas, l 63
Qts 0,33
Qes 0,35
Qms 4,6
Re, Оhm 6,13
Sd, сm2 491
Xmax, mm 11,5
n, % 0,7
Mounting information
Overall diameter, mm 318
Baffle cutout diameter, mm 286
Bolt hole diameter, mm 7
Bolt circle diameter, mm 302,5
Height, mm 164
Net weight, kg 9,6