M0821 - LF Drivers
Product description:
Mid bass transducer for compact two-way and multi-way speakers.
Main features:
- aluminum die-cast frame;
- removable self-centering ferrite magnet system;
- inside-outside copper voice coil;
- treated cone for water protection.
Product specification:
- 8” nominal diameter;
- 400 W AES program power;
- 93 dB 1W/1m sensitivity;
- 2” copper voice coil;
- 3.6 kg weight.
| Specifications | |
|---|---|
| Nominal diameter, inches (mm) | 8(200) |
| Nominal impedance, Ohm | 8/16 |
| Rated power (AES), W | 200 |
| Frequency range, Hz | 65-4000 |
| Sensitivity (1W / 1m), dB | 93 |
| Minimum impedance, Ohm | 8,3@300Hz |
| Bl product, Tm | 15,5 |
| Voice coil inductance, mH (1kHz) | 1,3 |
| Moving mass Mms, g | 28,7 |
| Voice coil | |
| Diameter, inches (mm) | 2(51) |
| Winding material | copper |
| Former material | glass fiber |
| Winding depth, mm | 15 |
| Magnetic system | |
| Magnetic gap depth, mm | 10 |
| Flux density, T | 1,08 |
| Thiele-Small parameters | |
| Fs, Hz | 59,6 |
| Vas, l | 16,7 |
| Qts | 0,272 |
| Qes | 0,285 |
| Qms | 6,4 |
| Re, Оhm | 6,4 |
| Sd, сm2 | 219 |
| Xmax, mm | 5 |
| n, % | 1,2 |
| Mounting information | |
| Overall diameter, mm | 209 |
| Baffle cutout diameter, mm | 185 |
| Bolt hole diameter, mm | 5,5 |
| Bolt circle diameter, mm | 196 |
| Height, mm | 109 |
| Net weight, kg | 3,6 |
