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 |
