M1251 - LF Drivers
Product description:
High output low distortion mid bass transducer for compact 2-way speakers.
Main features:
- aluminum die-cast octagonal frame with small installation dimensions;
- removable self-centering ferrite magnet system;
- inside-outside copper clad aluminum voice coil;
- ventilated voice coil gap;
- double aluminum demodulation ring.
Product specification:
- 12” nominal diameter;
- 1000 W AES program power;
- 97.5 dB 1W/1m sensitivity;
- 3” CCAW voice coil;
- 5.85 kg weight.
| Specifications | |
|---|---|
| Nominal diameter, inches (mm) | 12(300) |
| Nominal impedance, Ohm | 8/4 |
| Rated power (AES), W | 500 |
| Frequency range, Hz | 45-3500 |
| Sensitivity (1W / 1m), dB | 97.5 |
| Minimum impedance, Ohm | 6.8@285Hz |
| Bl product, Tm | 17 |
| Voice coil inductance, mH (1kHz) | 0.7 |
| Moving mass Mms, g | 48 |
| Voice coil | |
| Diameter, inches (mm) | 3 (76) |
| Winding material | CCAW |
| Former material | glass fiber |
| Winding depth, mm | 19.2 |
| Magnetic system | |
| Magnetic gap depth, mm | 8 |
| Flux density, T | 1.27 |
| Thiele-Small parameters | |
| Fs, Hz | 51 |
| Vas, l | 75.7 |
| Qts | 0.29 |
| Qes | 0.31 |
| Qms | 5.6 |
| Re, Оhm | 5.7 |
| Sd, сm2 | 519 |
| Xmax, mm | 7.6 |
| n, % | 3.1 |
| Mounting information | |
| Overall diameter, mm | 303/338 |
| Baffle cutout diameter, mm | 282 |
| Bolt hole diameter, mm | 6x8 |
| Bolt circle diameter, mm | 315 |
| Height, mm | 146 |
| Net weight, kg | 5.85 |
