M1808 - LF Drivers
Product description:
High power low distortion extended low frequency transducer for bass reflex and band pass system.
Main features:
- aluminum die-cast octagonal frame with small installation dimensions;
- removable self-centering ferrite magnet system;
- inside-outside copper voice coil;
- ventilated voice coil gap;
- double aluminum demodulation ring;
- glass fiber reinforced weather protected cone;
- double silicon spider.
Product specification:
- 18” nominal diameter;
- 3200 W AES program power;
- 96 dB 1W/1m sensitivity;
- 4.5” copper voice coil;
- 14.9 kg weight.
| Specifications | |
|---|---|
| Nominal diameter, inches (mm) | 18(460) |
| Nominal impedance, Ohm | 8 |
| Rated power (AES), W | 1600 |
| Frequency range, Hz | 35-1000 |
| Sensitivity (1W / 1m), dB | 97 |
| Minimum impedance, Ohm | 6,7@175Hz |
| Bl product, Tm | 29,8 |
| Voice coil inductance, mH (1kHz) | 1,27 |
| Moving mass Mms, g | 274 |
| Voice coil | |
| Diameter, inches (mm) | 4,5(115) |
| Winding material | copper |
| Former material | glass fiber |
| Winding depth, mm | 30 |
| Magnetic system | |
| Magnetic gap depth, mm | 11 |
| Flux density, T | 1,1 |
| Thiele-Small parameters | |
| Fs, Hz | 34,5 |
| Vas, l | 172 |
| Qts | 0,34 |
| Qes | 0,36 |
| Qms | 5,2 |
| Re, Оhm | 5,4 |
| Sd, сm2 | 1250 |
| Xmax, mm | 12,25 |
| n, % | 1,9 |
| Mounting information | |
| Overall diameter, mm | 448/480 |
| Baffle cutout diameter, mm | 424 |
| Bolt hole diameter, mm | 7,5/9,5 |
| Bolt circle diameter, mm | 450 |
| Height, mm | 218 |
| Net weight, kg | 14,9 |

