M1804 - LF Drivers
Product description:
High power 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;
- inside-outside copper voice coil;
- ventilated voice coil gap;
- glass fiber reinforced cone;
- double silicon spider.
Product specification:
- 18” nominal diameter;
- 2000 W AES program power;
- 96 dB 1W/1m sensitivity;
- 4” copper voice coil;
- 12.2 kg weight.
| Specifications | |
|---|---|
| Nominal diameter, inches (mm) | 18(460) |
| Nominal impedance, Ohm | 4/8 |
| Rated power (AES), W | 1000 |
| Frequency range, Hz | 30-500 |
| Sensitivity (1W / 1m), dB | 96 |
| Minimum impedance, Ohm | 6,7@140Hz |
| Bl product, Tm | 28,1 |
| Voice coil inductance, mH (1kHz) | 2,6 |
| Moving mass Mms, g | 237 |
| Voice coil | |
| Diameter, inches (mm) | 4(100) |
| Winding material | copper |
| Former material | glass fiber |
| Winding depth, mm | 25 |
| Magnetic system | |
| Magnetic gap depth, mm | 11 |
| Flux density, T | 1,14 |
| Thiele-Small parameters | |
| Fs, Hz | 32,8 |
| Vas, l | 208 |
| Qts | 0,33 |
| Qes | 0,35 |
| Qms | 7,9 |
| Re, Оhm | 5,7 |
| Sd, сm2 | 1195 |
| Xmax, mm | 9,75 |
| n, % | 2 |
| Mounting information | |
| Overall diameter, mm | 471 |
| Baffle cutout diameter, mm | 414 |
| Bolt hole diameter, mm | 7x9 |
| Bolt circle diameter, mm | 440 |
| Height, mm | 206 |
| Net weight, kg | 12,2 |
